All assignees
800 prefixes in 720 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 720-200 | DENVER | 9636 | — | — |
| 720-201 | DENVER | 6010 | — | — |
| 720-202 | DENVER | 6567 | 2009-10-07 | Yes |
| 720-203 | DENVER | 6529 | 2001-01-29 | Yes |
| 720-204 | LONGMONT | 6118 | — | Yes |
| 720-205 | DENVER | 6529 | — | Yes |
| 720-206 | DENVER | 7229 | — | Yes |
| 720-207 | DENVER | 7229 | — | Yes |
| 720-208 | DENVER | 7229 | — | Yes |
| 720-209 | DENVER | 6529 | — | Yes |
| 720-210 | DENVER | 7229 | — | Yes |
| 720-211 | XXXXXXXXXX | MULT | — | — |
| 720-212 | DENVER | 7229 | — | Yes |
| 720-213 | DENVER | 829J | — | Yes |
| 720-214 | DENVER | 829J | — | — |
| 720-215 | DENVER | 6567 | 2009-10-12 | Yes |
| 720-216 | DENVER | 7378 | 2001-01-29 | Yes |
| 720-217 | DENVER | 6529 | — | — |
| 720-218 | DENVER | 6529 | — | Yes |
| 720-219 | DENVER | 6567 | — | Yes |
| 720-220 | DENVER | 6529 | — | — |
| 720-221 | DENVER | 7229 | — | — |
| 720-222 | DENVER | 7229 | — | — |
| 720-223 | DENVER | 7229 | — | Yes |
| 720-224 | DENVER | 7229 | — | Yes |
| 720-225 | DENVER | 7229 | — | Yes |
| 720-226 | DENVER | 7229 | — | Yes |
| 720-227 | DENVER | 7229 | — | Yes |
| 720-228 | DENVER | 7229 | — | — |
| 720-229 | DENVER | 7229 | — | Yes |
| 720-230 | DENVER | 8980 | — | Yes |
| 720-231 | DENVER | 6529 | — | — |
| 720-232 | DENVER | 6529 | — | Yes |
| 720-233 | DENVER | 6529 | — | Yes |
| 720-234 | DENVER | 6529 | — | Yes |
| 720-235 | DENVER | 6529 | — | Yes |
| 720-236 | DENVER | 6529 | — | Yes |
| 720-237 | DENVER | 6010 | 2009-09-28 | Yes |
| 720-238 | DENVER | 6529 | — | Yes |
| 720-239 | DENVER | 7378 | — | Yes |
| 720-240 | DENVER | 7229 | — | Yes |
| 720-241 | DENVER | 7229 | — | Yes |
| 720-242 | DENVER | 9636 | 2008-10-09 | Yes |
| 720-243 | DENVER | 6010 | 2009-06-30 | Yes |
| 720-244 | DENVER | 6010 | — | — |
| 720-245 | DENVER | 3467 | 2011-11-21 | Yes |
| 720-246 | DENVER | 7229 | — | Yes |
| 720-247 | DENVER | 7229 | 2004-05-20 | Yes |
| 720-248 | DENVER | 026D | — | Yes |
| 720-249 | DENVER | 7229 | — | Yes |
| 720-250 | DENVER | 7229 | — | Yes |
| 720-251 | DENVER | 6118 | — | Yes |
| 720-252 | DENVER | 6529 | — | Yes |
| 720-253 | DENVER | 6529 | — | Yes |
| 720-254 | DENVER | 6529 | — | Yes |
| 720-255 | DENVER | 6529 | — | Yes |
| 720-256 | DENVER | 6529 | — | Yes |
| 720-257 | DENVER | 7229 | — | Yes |
| 720-258 | DENVER | 7378 | — | Yes |
| 720-259 | DENVER | 6118 | — | Yes |
| 720-260 | DENVER | 6529 | — | Yes |
| 720-261 | DENVER | 6529 | — | — |
| 720-262 | DENVER | 6118 | — | Yes |
| 720-263 | DENVER | 6118 | — | Yes |
| 720-264 | DENVER | 9636 | — | — |
| 720-265 | DENVER | 7229 | 2004-05-03 | Yes |
| 720-266 | DENVER | 6118 | — | Yes |
| 720-267 | DENVER | 9636 | — | — |
| 720-268 | DENVER | 9636 | — | — |
| 720-269 | DENVER | 7378 | — | Yes |
| 720-270 | DENVER | 6529 | — | Yes |
| 720-271 | DENVER | 6529 | — | Yes |
| 720-272 | DENVER | 6010 | 2001-01-18 | — |
| 720-273 | DENVER | 6010 | 2001-01-18 | — |
| 720-274 | DENVER | 829J | — | — |
| 720-275 | DENVER | 6010 | 2001-02-22 | — |
| 720-276 | DENVER | 6010 | 2001-02-22 | — |
| 720-277 | DENVER | 6118 | — | Yes |
| 720-278 | DENVER | 4574 | 2001-01-25 | Yes |
| 720-279 | DENVER | 4574 | 2001-01-25 | Yes |
| 720-280 | DENVER | 6529 | — | — |
| 720-281 | DENVER | 6567 | — | Yes |
| 720-282 | DENVER | 4574 | 2001-01-25 | Yes |
| 720-283 | DENVER | 9636 | — | — |
| 720-284 | DENVER | 7229 | — | Yes |
| 720-285 | DENVER | 8980 | 2009-01-30 | Yes |
| 720-286 | DENVER | 7378 | 2002-04-30 | Yes |
| 720-287 | DENVER | 318J | 2010-04-30 | Yes |
| 720-288 | DENVER | 078F | 2010-02-26 | Yes |
| 720-289 | DENVER | 6010 | 2001-07-25 | — |
| 720-290 | DENVER | 6529 | — | Yes |
| 720-291 | DENVER | 6529 | — | Yes |
| 720-292 | DENVER | 6010 | 2009-03-04 | Yes |
| 720-293 | DENVER | 7229 | — | — |
| 720-294 | DENVER | 7229 | — | — |
| 720-295 | DENVER | 078F | 2010-03-01 | Yes |
| 720-296 | DENVER | 6010 | 2001-01-12 | — |
| 720-297 | DENVER | 6010 | 2001-01-12 | — |
| 720-298 | DENVER | 6010 | 2001-01-12 | — |
| 720-299 | DENVER | 6529 | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.