NumberResearchRecent prefix assignments
352 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 970-347 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-348 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-349 | QWEST CORPORATION | 9636 | CRESTEDBTE | CO | |
| 970-350 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-351 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-352 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-353 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-354 | PLAINS COOP. TEL. ASSN., INC. | 2199 | IDALIA | CO | |
| 970-356 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-357 | PLAINS COOP. TEL. ASSN., INC. | 2199 | COPE | CO | |
| 970-358 | PLAINS COOP. TEL. ASSN., INC. | 2199 | JOES | CO | |
| 970-359 | PLAINS COOP. TEL. ASSN., INC. | 2199 | ECKLEY | CO | |
| 970-361 | T-MOBILE USA, INC. | 6529 | GRAND JCT | CO | |
| 970-362 | PLAINS COOP. TEL. ASSN., INC. | 2199 | KIRK | CO | |
| 970-365 | UNION TEL. CO. | 2297 | LODORE | CO | |
| 970-369 | QWEST CORPORATION | 9636 | TELLURIDE | CO | |
| 970-370 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | FORTMORGAN | CO | |
| 970-371 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GREELEY | CO | |
| 970-372 | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | FT COLLINS | CO | |
| 970-373 | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | GREELEY | CO | |
| 970-374 | CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK | 2185 | DINOSAUR | CO | |
| 970-375 | QWEST CORPORATION | 9636 | DURANGO | CO | |
| 970-376 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VAIL | CO | |
| 970-377 | QWEST CORPORATION | 9636 | FT COLLINS | CO | |
| 970-378 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-379 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | GLENWD SPG | CO | |
| 970-380 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | FORTMORGAN | CO | |
| 970-381 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | GREELEY | CO | |
| 970-382 | QWEST CORPORATION | 9636 | DURANGO | CO | |
| 970-383 | PLAINS COOP. TEL. ASSN., INC. | 2199 | ANTON | CO | |
| 970-384 | QWEST CORPORATION | 9636 | GLENWD SPG | CO | |
| 970-385 | QWEST CORPORATION | 9636 | DURANGO | CO | |
| 970-386 | EASTERN SLOPE RURAL TEL. ASSN., INC. | 2186 | WOODROW | CO | |
| 970-387 | QWEST CORPORATION | 9636 | SILVERTON | CO | |
| 970-389 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DILLON | CO | |
| 970-390 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VAIL | CO | |
| 970-391 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-392 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-395 | QWEST CORPORATION | 9636 | GREELEY | CO | |
| 970-396 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GREELEY | CO | |
| 970-397 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | GREELEY | CO | |
| 970-399 | FASTTRACK COMMUNICATIONS, INC. - CO | 330B | DELTA | CO | |
| 970-401 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | VAIL | CO | |
| 970-402 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-406 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DILLON | CO | |
| 970-407 | QWEST CORPORATION | 9636 | FT COLLINS | CO | |
| 970-409 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | DILLON | CO | |
| 970-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CO | |
| 970-412 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-416 | QWEST CORPORATION | 9636 | FT COLLINS | CO |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.