AdSense placeholder
Paste your AdSense script + ad units in src/layout_bottom.php, then set $ads_enabled = true.
Home / Area 720
Ad slot (sidebar)
Ad Unit
Place a vertical ad here.| Prefix | City | Company | Line type | Open |
|---|---|---|---|---|
| 301 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 302 | Aurora | Teleport Communications America Llc - Co | Landline | View |
| 304 | Boulder | Qwest Corporation | Landline | View |
| 305 | Denver | Tw Telecom Of Colorado Llc - Co | Landline | View |
| 306 | Englewood | Eschelon Telecom Of Colorado Inc. - Co | Landline | View |
| 307 | Henderson | At&t Local | Landline | View |
| 308 | Denver | New Cingular Wireless Pcs Llc | Wireless | View |
| 309 | Denver | Leap Wireless Intl Inc. Dba Cricket Comm Inc. | Wireless | View |
| 310 | Aurora | Teleport Communications America Llc - Co | Landline | View |
| 312 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 313 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 314 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 315 | Englewood | 360networks (usa) Inc. - Co | Landline | View |
| 316 | Denver | Bandwidth.com Clec Llc - Co | Landline | View |
| 317 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 318 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 319 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 320 | Denver | New Cingular Wireless Pcs Llc | Wireless | View |
| 321 | Denver | Qwest Corporation | Landline | View |
| 322 | Commerce City | Qwest Corporation | Landline | View |
| 323 | Denver | T-mobile Usa Inc. | Wireless | View |
| 324 | Denver | Comcast Phone Of Colorado Llc - Co | Landline | View |
| 325 | Denver | T-mobile Usa Inc. | Wireless | View |
| 326 | Denver | New Cingular Wireless Pcs Llc | Wireless | View |
| 327 | Denver | Leap Wireless Intl Inc. Dba Cricket Comm Inc. | Wireless | View |
| 328 | Denver | Comcast Phone Of Colorado Llc - Co | Landline | View |
| 329 | Denver | Leap Wireless Intl Inc. Dba Cricket Comm Inc. | Wireless | View |
| 330 | Denver | Icg Telecom Group - Co | Landline | View |
| 331 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 332 | Englewood | Qwest Corporation | Landline | View |
| 333 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 334 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 335 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 336 | Denver | Bandwidth.com Clec Llc - Co | Landline | View |
| 337 | Denver | Qwest Corporation | Landline | View |
| 338 | Denver | Leap Wireless Intl Inc. Dba Cricket Comm Inc. | Wireless | View |
| 339 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 340 | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless | View |
| 341 | Denver | T-mobile Usa Inc. | Wireless | View |
| 342 | Denver | At&t Local | Landline | View |
| 343 | Denver | Icg Telecom Group - Co | Landline | View |
| 344 | Littleton | Qwest Corporation | Landline | View |
| 345 | Denver | Zippytech Incorporated | Landline | View |
| 346 | Westminster | Cellco Partnership Dba Verizon Wireless - Co | Wireless | View |
| 347 | Denver | Tw Telecom Of Colorado Llc - Co | Landline | View |
| 348 | Littleton | Qwest Corporation | Landline | View |
| 349 | Denver | At&t Local | Landline | View |
| 350 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 351 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 352 | Denver | T-mobile Usa Inc. | Wireless | View |
| 353 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 354 | Englewood | Tw Telecom Of Colorado Llc - Co | Landline | View |
| 355 | Westminster | Cellco Partnership Dba Verizon Wireless - Co | Wireless | View |
| 356 | Denver | At&t Local | Landline | View |
| 357 | Englewood | New Cingular Wireless Pcs Llc | Wireless | View |
| 358 | Denver | Mcimetro Access Transmission Services Llc | Landline | View |
| 359 | Denver | Qwest Corporation | Landline | View |
| 360 | Denver | New Cingular Wireless Pcs Llc | Wireless | View |
| 362 | Englewood | Qwest Corporation | Landline | View |
| 363 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 364 | Denver | Leap Wireless Intl Inc. Dba Cricket Comm Inc. | Wireless | View |
| 365 | Denver | Leap Wireless Intl Inc. Dba Cricket Comm Inc. | Wireless | View |
| 366 | Denver | Leap Wireless Intl Inc. Dba Cricket Comm Inc. | Wireless | View |
| 367 | Englewood | Xo Colorado Llc | Landline | View |
| 368 | Englewood | Xo Colorado Llc | Landline | View |
| 369 | Denver | New Cingular Wireless Pcs Llc | Wireless | View |
| 370 | Denver | Bandwidth.com Clec Llc - Co | Landline | View |
| 371 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 373 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 374 | Denver | Qwest Corporation | Landline | View |
| 375 | Denver | Commnet Wireless Llc | Wireless | View |
| 376 | Westminster | Eschelon Telecom Of Colorado Inc. - Co | Landline | View |
| 377 | Englewood | Xo Colorado Llc | Landline | View |
| 378 | Denver | New Cingular Wireless Pcs Llc | Wireless | View |
| 379 | Denver | Icg Telecom Group - Co | Landline | View |
| 380 | Englewood | Sprint Spectrum L.p. | Wireless | View |
| 381 | Denver | Comcast Phone Of Colorado Llc - Co | Landline | View |
| 382 | Denver | Eschelon Telecom Of Colorado Inc. - Co | Landline | View |
| 383 | Westminster | Cellco Partnership Dba Verizon Wireless - Co | Wireless | View |
| 384 | Westminster | Xo Colorado Llc | Landline | View |
| 385 | Denver | Xo Colorado Llc | Landline | View |
| 386 | Denver | Bandwidth.com Clec Llc - Co | Landline | View |
| 387 | Aurora | Tw Telecom Of Colorado Llc - Co | Landline | View |
| 388 | Denver | Cellco Partnership Dba Verizon Wireless - Co | Wireless | View |
| 389 | Englewood | Xo Colorado Llc | Landline | View |
| 392 | Englewood | Ymax Communications Corp. - Co | Landline | View |
| 393 | Aurora | Tw Telecom Of Colorado Llc - Co | Landline | View |
| 394 | Denver | T-mobile Usa Inc. | Wireless | View |
| 395 | Denver | At&t Local | Landline | View |
| 396 | Denver | At&t Local | Landline | View |
| 397 | Denver | At&t Local | Landline | View |
| 398 | Denver | Leap Wireless Intl Inc. Dba Cricket Comm Inc. | Wireless | View |
| 399 | Denver | Level 3 Communications Llc - Co | Landline | View |
| 400 | Denver | T-mobile Usa Inc. | Wireless | View |
| 401 | Denver | T-mobile Usa Inc. | Wireless | View |
| 402 | Englewood | Eschelon Telecom Of Colorado Inc. - Co | Landline | View |
| 404 | Denver | Leap Wireless Intl Inc. Dba Cricket Comm Inc. | Wireless | View |
| 406 | Boulder | Qwest Corporation | Landline | View |
| 407 | Denver | Cbeyond Communications Llc - Co | Landline | View |
| 408 | Denver | Bandwidth.com Clec Llc - Co | Landline | View |
Page Overview
This page provides detailed information and helpful insights related to your search. All data is based on telecom assignment records and community user reports. Use the navigation above to explore related area codes, prefixes, and reported numbers.
© 2026 Phone Directory.
Light theme (AdSense-ready).