Exhibit 21

tw telecom Subsidiaries



|                                           |  |                                           |  |                       
|------------------------------------------ |  | ----------------------------------------- |  | ----------------------
|Subsidiary                                 |  | Jurisdiction ofIncorporation/Organization |  | D/B/A                 
|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                                  |  |                       
|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                                  |  |