Exhibit 8.1

List of Subsidiaries of Tele2 AB

|Company, reg. no., reg'd office             |                                                  | Holding
(capital/votes)                          |                                                            
|------------------------------------------- | ------------------------------------------------ | ------------------------------------------------ | -----------------------------------------------------------
|NETCOM LUXEMBOURG SA, RC B73.796 Luxembourg |                                                  | 100                                              | %                                                          
|                                            | TELE2 HOLDING AB, 556579-7700, Stockholm, Sweden |                                                  | 100                                                        
|                                            |                                                  | Tele2 Sverige AB, 556267-5164, Stockholm, Sweden |                                                            
|                                            |                                                  |                                                  | Tele2 Sweden SA, RC B73.802, Luxembourg                    
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  | In2loop Polska Sp. So.o, 54380, Warsaw, Poland             
|                                            |                                                  |                                                  | Web Communication BV, 34112460, Amsterdam, Netherlands     
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  | Tele2 Holding AS, 10262238, Tallin, Estonia                
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  | Belmus BV, 33261289, Amsterdam, Netherlands                
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  | Tele2 Holding SIA, 000351206, Riga, Latvia                 
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  | Tele2 OU, 10309744, Tallin, Estonia                        
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  | Tele2 St Pet Holding AB, 556636-7362, Stockholm, Sweden    
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  | Corporation Severnaya Korona, no P-6117.16, Irkutsk, Russia
|                                            |                                                  |                                                  | St Petersburg Telecom, no AO-3177, St Petersburg, Russia   
|                                            |                                                  |                                                  | Oblcom, no P-7180.16, St Petersburg, Russia                
|                                            |                                                  |                                                  | Tele2 Russia Telecom BV, 33287334, Rotterdam, Netherlands  
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            
|                                            |                                                  |                                                  |                                                            

---



| |  |  |                                                             | Tele2 Russia Telecom Services BV, 33.287.334, Amsterdam, Netherlands            |                                                                    | 100 | %  
| |  |  | ----------------------------------------------------------- | ------------------------------------------------------------------------------- | ------------------------------------------------------------------ | --- | ---
| |  |  |                                                             | PSNR Personal System Networks in region, 1025202610157, Niznhy Novgorod, Russia |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 Russia VOL Holding GmbH, FN 131602 h, Vienna, Austria                     |                                                                    | 100 | %  
| |  |  |                                                             |                                                                                 | Kursk Cellular Communications, no P-16792.17, Kursk, Russia        |     | 100
| |  |  |                                                             |                                                                                 | Smolensk Cellular Communications, no P-2581.16, Smolensk, Russia   |     | 60 
| |  |  |                                                             |                                                                                 | Belgorod Cellular Communications, no P-2586.16, Belgorod, Russia   |     | 65 
| |  |  |                                                             |                                                                                 | Kemerovo Mobile Communications, no P-13742.17, Kemerovo, Russia    |     | 100
| |  |  |                                                             |                                                                                 | Rostov Cellular Communications, no P-1790.16, Rostov, Russia       |     | 5  
| |  |  |                                                             |                                                                                 | Udmurtiya Cellular Communications, no P-5818.16, Izhevsk, Russia   |     | 5  
| |  |  |                                                             |                                                                                 | Siberian Cellular Communications, no P-4458.16, Omsk, Russia       |     | 60 
| |  |  |                                                             |                                                                                 | Chelyabinsk Cellular Network, no P-3656.15, Chelyabinsk, Russia    |     | 100
| |  |  |                                                             | Tele2 Russia EKA Holding GmbH, FN 131600 f, Vienna, Austria                     |                                                                    | 100 | %  
| |  |  |                                                             |                                                                                 | Fora Telecom M, no P-12721.17, Moscow, Russia                      |     | 100
| |  |  |                                                             | Tele2 Russia MAC Holding GmbH, FN 132666 y, Vienna, Austria                     |                                                                    | 100 | %  
| |  |  |                                                             |                                                                                 | CISC Cellular, no P-8068.17, Moscow, Russia, dormant               |     | 100
| |  |  |                                                             |                                                                                 | Millicom New Tech. in Communications, no P-9894.17, Moscow, Russia |     | 100
| |  |  | Oy Finland Tele2 AB, 1482343-8, Helsinki, Finland           |                                                                                 | 100                                                                | %  
| |  |  | Suomen 3G Oy, 502981, Helsinki, Finland                     |                                                                                 | 100                                                                | %  
| |  |  | Datametrix Norge AS, 975993108, Oslo, Norway                |                                                                                 | 100                                                                | %  
| |  |  | Datametrix Danmark A/S, 39419, Copenhagen, Denmark          |                                                                                 | 100                                                                | %  
| |  |  | ProcureITright AB, 556600-9436, Stockholm, Sweden           |                                                                                 | 100                                                                | %  
| |  |  |                                                             | Proceedo Solution AB, 556599-5049, Stockholm, Sweden                            |                                                                    | 100 | %  
| |  |  | Radio Components Sweden AB, 556573-3846, Stockholm, Sweden  |                                                                                 | 70                                                                 | %  
| |  |  | NetCom GSM Sverige AB, 556304-7025, Stockholm, Sweden       |                                                                                 | 100                                                                | %  
| |  |  | Hallstahammar Kabelvision KB, 916580-7912, Västerås, Sweden |                                                                                 | 90                                                                 | %  
| |  |  | Kopparstaden Kabelvision KB, 916583-0564, Västerås, Sweden  |                                                                                 | 80                                                                 | %  
| |  |  | Nelab Kabelvision KB, 916597-8983, Västerås, Sweden         |                                                                                 | 80                                                                 | %  
| |  |  | Kabelvision Sverige AB, 556650-2455, Stockholm, Sweden      |                                                                                 | 100                                                                | %  
| |  |  | Åkersberga KV AB, 556326-3192, Österåker, Sweden            |                                                                                 | 100                                                                | %  
| |  |  | Halmstads KV AB, 556380-6115, Halmstad, Sweden              |                                                                                 | 100                                                                | %  
| |  |  | Skaraborgs Kabelvision AB, 556483-6467, Mariestad, Sweden   |                                                                                 | 60                                                                 | %  
| |  |  | Tele2 Europe SA, R.C.B56944, Luxembourg                     |                                                                                 | 100                                                                | %  
| |  |  |                                                             | Tele2 Telecommunication Services GmbH, FN178222t, Vienna, Austria               |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 Belgium SA, 609392, Zellik, Belgium                                       |                                                                    | 100 | %  
| |  |  |                                                             | Télé2 France SA, B409914058, Velizy, France                                     |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 Telecommunication Services GmbH, 36232, Düsseldorf, Germany               |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 Italia Spa, Ml-1998-247322, Segrate, Italy                                |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 AG, H.1045/80, Liechstenstein                                             |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 Luxembourg SA, R.C.B65774, Luxembourg                                     |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 (Netherlands) BV, BV 291906, Amsterdam, Netherlands                       |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 Telecommunication Services S.L, B82051913, Madrid, Spain                  |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 Telecommunication Services AG, CH-020390 55 969, Zürich, Switzerland      |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 Communications Services Ltd, 3565220, London, England                     |                                                                    | 100 | %  
| |  |  |                                                             | Telemilenio, Telecomunicacoes, Sociedade Unipessoal, 10468, Lissabon, Portugal  |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 /Slovakia/ s.r.o., 35806486, Bratislava, Slovakia                         |                                                                    | 100 | %  
| |  |  |                                                             | Tele2 Magyarorszag Kft., 12634402-2-41, Budapest, Hungary                       |                                                                    | 100 | %  
| |  |  |                                                             | Tango SA, RC.B59560, Luxembourg                                                 |                                                                    | 100 | %  
| |  |  |                                                             | Transac SA, RC.B49487, Luxembourg                                               |                                                                    | 100 | %  
| |  |  |                                                             | Everyday Media SA, R.C. B 78.227, Luxembourg                                    |                                                                    | 100 | %  
| |  |  |                                                             | Everyday Prod. SA, R.C.B69802, Luxembourg                                       |                                                                    | 100 | %  
| |  |  |                                                             | 3C Communications International SA, RC B 29697, Luxembourg                      |                                                                    | 100 | %  
| |  |  |                                                             |                                                                                 | 3C Communications GmbH, FN695021, Vienna, Austria                  |     | 100
| |  |  |                                                             |                                                                                 | 3C Communications BVBA, 514 274, Brussels, Belgium                 |     | 99 
| |  |  |                                                            

2

---



| |  |  |                                          |                                                           | 3C Communications SPA Italy, 28894/7359/14, Segrate, Italy                        |                                                                             | 91  | %  
| |  |  | ---------------------------------------- | --------------------------------------------------------- | --------------------------------------------------------------------------------- | --------------------------------------------------------------------------- | --- | ---
| |  |  |                                          |                                                           | 3C Communications A/S,184462, Ballerup, Denmark                                   |                                                                             | 100 | %  
| |  |  |                                          |                                                           | 3C Communications OY, 585632, Finland                                             |                                                                             | 100 | %  
| |  |  |                                          |                                                           | 3C Communications SA, 345 343 396 00023 Orleans, France                           |                                                                             | 99  | %  
| |  |  |                                          |                                                           | 3C Communications GmbH, HRB 24104, Germany                                        |                                                                             | 100 | %  
| |  |  |                                          |                                                           | 3C Communications Luxembourg SA, B39690, Luxembourg                               |                                                                             | 100 | %  
| |  |  |                                          |                                                           | 3C Communications BV, 14630454, Amsterdam, Netherlands                            |                                                                             | 99  | %  
| |  |  |                                          |                                                           | 3C Communications A/S, Oslo, Norway                                               |                                                                             | 100 | %  
| |  |  |                                          |                                                           | 3C Communicacoes Ltda, Domingos de Rana, Portugal                                 |                                                                             | 95  | %  
| |  |  |                                          |                                                           | 3C Communications Espana SA, Madrid, Spain                                        |                                                                             | 99  | %  
| |  |  |                                          |                                                           | 3C Communications AB, 556332-6346, Stockholm, Sweden                              |                                                                             | 97  | %  
| |  |  |                                          |                                                           | 3C Transac AB Sweden,556057-2116, Stockhom, Sweden                                |                                                                             | 100 | %  
| |  |  |                                          |                                                           | 3C Communications Ltd, 2343138, UK                                                |                                                                             | 96  | %  
| |  |  |                                          |                                                           | 3C Transac Ltd, Kingston-upon-Thames, UK                                          |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Comviq Holding BV, 14630454, Amsterdam, Netherlands                               |                                                                             | 100 | %  
| |  |  |                                          |                                                           | 3C Communications Equipment SA, B25465, Luxembourg                                |                                                                             | 100 | %  
| |  |  |                                          |                                                           |                                                                                   | 3C Communications BVBA, 514 274, Brussels, Belgium                          |     | 1  
| |  |  |                                          |                                                           |                                                                                   | 3C Communications SPA Italy, 28894/7359/14, Segrate, Italy                  |     | 9  
| |  |  |                                          |                                                           |                                                                                   | 3C Communications SA, 345 343 396 00023 Orleans, France                     |     | 1  
| |  |  |                                          |                                                           |                                                                                   | 3C Communications BV, Amsterdam, 14630454, Netherlands                      |     | 1  
| |  |  |                                          |                                                           |                                                                                   | 3C Communicacoes Ltda, Domingos de Rana, Portugal                           |     | 5  
| |  |  |                                          |                                                           |                                                                                   | 3C Communications Espana SA, Madrid, Spain                                  |     | 1  
| |  |  |                                          |                                                           |                                                                                   | 3C Communications AB, 556332-6346, Stockholm, Sweden                        |     | 3  
| |  |  |                                          |                                                           |                                                                                   | 3C Communications Ltd, 2343138, UK                                          |     | 4  
| |  |  |                                          | CCC Holding BV, 33 269 398, Amsterdam, Netherlands        |                                                                                   | 100                                                                         | %  
| |  |  |                                          |                                                           | Calling Card Company Limited, 3794813, UK                                         |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Calling Card Company Germany GmbH, HRB 40498, Germany                             |                                                                             | 100 | %  
| |  |  |                                          |                                                           | C3 Calling Card Company Limited, 309745, Ireland                                  |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Calling Card Company SA, B424906618, Paris, France                                |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Calling Card Company Italy SpA, 233372, Milano, Italy                             |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Tele2 International Card Company S.A., RC 64 902, Luxembourg                      |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Calling Card Company Netherlands BV, BV 82334, Amsterdam, Netherlands             |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Calling Card Company Spain, S.A. A-62426457, Spain                                |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Calling Card Company Telecommunication Services GmbH, FN 215362i, Austria         |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Calling Card Company (UK) Ltd, 3812138, London, England                           |                                                                             | 100 | %  
| |  |  |                                          | SEC Everyday Europe BV, 341124357, Amsterdam, Netherlands |                                                                                   | 100                                                                         | %  
| |  |  |                                          | IntelliNet Holding BV, 34126307, Amsterdam, Netherlands   |                                                                                   | 100                                                                         | %  
| |  |  |                                          |                                                           | IntelliNet S.p.A, R.C. 1615155, Segrate, Italy                                    |                                                                             | 99  | %  
| |  |  |                                          |                                                           | INT IntelliNet Telecommunications Services AG, CH02030215188, Zürich, Switzerland |                                                                             | 100 | %  
| |  |  |                                          | IntelliNet S.p.A, R.C. 1615155, Segrate, Italy            |                                                                                   | 1                                                                           | %  
| |  |  |                                          | Fagersta AB, 556238-4171, Stockholm, Sweden               |                                                                                   | 100                                                                         | %  
| |  |  |                                          | S.E.C. Luxembourg S.A., R.C. B-84.649, Luxembourg         |                                                                                   | 100                                                                         | %  
| |  |  |                                          |                                                           | Tele2 s.r.o., 25650009, Prague, Czech Republic                                    |                                                                             | 100 | %  
| |  |  |                                          |                                                           | SEC Holding BV, 33141829, Rotterdam, Netherlands                                  |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Tele2 Services Luxembourg SA, RCB70203, Luxembourg                                |                                                                             | 100 | %  
| |  |  | Tele2 (UK) Ltd, 4940295, London, England |                                                           | 100                                                                               | %                                                                          
| |  |  |                                          | Bethany Group Ltd, 390385, Virgin Islands, UK             |                                                                                   | 100                                                                         | %  
| |  |  |                                          |                                                           | Alpha Int. Overseas Telecomm. Services Ltd, 359452, Virgin Islands, UK            |                                                                             | 100 | %  
| |  |  |                                          |                                                           |                                                                                   | Alpha Int. Overseas Telecomm. Services Ltd, 06521/030616, Madeira, Portugal |     | 100
| |  |  |                                          |                                                           | Wiasing Consultores E Servicos Lda, 06521/030616, Madeira, Portugal               |                                                                             | 100 | %  
| |  |  |                                          |                                                           | Alpha Telecom Communications Ltd, 4028792, London, England                        |                                                                             | 100 | %  

3

---



QuickLinks