EXHIBIT 21

tw telecom Subsidiaries



|                                 |  |                                           |  |      
|-------------------------------- |  | ----------------------------------------- |  | -----
|Subsidiary                       |  | Jurisdiction ofIncorporation/Organization |  | D/B/A
|tw telecom inc.                  |  | Delaware                                  |  |      
|tw telecom holdings inc.         |  | Delaware                                  |  |      
|tw telecom holdings II llc       |  | Delaware                                  |  |      
|tw telecom l.p.                  |  | Delaware                                  |  |      
|tw telecom management co. llc    |  | Delaware                                  |  |      
|tw telecom data services llc     |  | Delaware                                  |  |      
|tw telecom of alabama llc        |  | Delaware                                  |  |      
|tw telecom of arizona llc        |  | Delaware                                  |  |      
|tw telecom of arkansas llc       |  | Delaware                                  |  |      
|tw telecom of colorado llc       |  | Delaware                                  |  |      
|tw telecom of d.c. llc           |  | Delaware                                  |  |      
|tw telecom of idaho llc          |  | Delaware                                  |  |      
|tw telecom of illinois llc       |  | Delaware                                  |  |      
|tw telecom of louisiana llc      |  | Delaware                                  |  |      
|tw telecom of kansas city llc    |  | Delaware                                  |  |      
|tw telecom of kentucky llc       |  | Delaware                                  |  |      
|tw telecom of louisiana llc      |  | Delaware                                  |  |      
|tw telecom of maryland llc       |  | Delaware                                  |  |      
|tw telecom of minnesota llc      |  | Delaware                                  |  |      
|tw telecom of mississippi llc    |  | Delaware                                  |  |      
|tw telecom of nevada llc         |  | Delaware                                  |  |      
|tw telecom of new mexico llc     |  | Delaware                                  |  |      
|tw telecom of ohio llc           |  | Delaware                                  |  |      
|tw telecom of oklahoma llc       |  | Delaware                                  |  |      
|tw telecom of oregon llc         |  | Delaware                                  |  |      
|tw telecom of south carolina llc |  | Delaware                                  |  |      
|tw telecom of tennessee llc      |  | Delaware                                  |  |      
|tw telecom of texas llc          |  | Delaware                                  |  |      
|tw telecom of utah llc           |  | Delaware                                  |  |      
|tw telecom of virginia llc       |  | Virginia                                  |  |      



---



|                                           |  |                                            |  |                       
|------------------------------------------ |  | ------------------------------------------ |  | ----------------------
|Subsidiary                                 |  | Jurisdiction ofIncorporation/ Organization |  | D/B/A                 
|tw telecom of washington llc               |  | Delaware                                   |  |                       
|tw telecom of california l.p.              |  | Delaware                                   |  |                       
|tw telecom of florida l.p.                 |  | Delaware                                   |  |                       
|tw telecom of georgia l.p.                 |  | Delaware                                   |  |                       
|tw telecom of hawaii l.p.                  |  | Delaware                                   |  | Oceanic Communications
|tw telecom of indiana l.p.                 |  | Delaware                                   |  |                       
|tw telecom of new jersey l.p.              |  | Delaware                                   |  |                       
|tw telecom of new york l.p.                |  | Delaware                                   |  |                       
|tw telecom of north carolina l.p.          |  | Delaware                                   |  |                       
|tw telecom of wisconsin l.p.               |  | Delaware                                   |  |                       
|Xspedius Management Co. International, LLC |  | Delaware                                   |  |