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 |
|---|---|---|---|---|---|
| 970-518 | T-MOBILE USA, INC. | 6529 | GREELEY | CO | |
| 970-519 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | TELLURIDE | CO | |
| 970-520 | N.E. COLORADO CELLULAR, INC. | 6874 | STERLING | CO | |
| 970-521 | QWEST CORPORATION | 9636 | STERLING | CO | |
| 970-522 | QWEST CORPORATION | 9636 | STERLING | CO | |
| 970-523 | QWEST CORPORATION | 9636 | GRAND JCT | CO | |
| 970-524 | CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK | 2185 | GYPSUM | CO | |
| 970-526 | QWEST CORPORATION | 9636 | STERLING | CO | |
| 970-527 | DELTA COUNTY TELE-COMM, INC. | 2184 | PAONIA | CO | |
| 970-529 | QWEST CORPORATION | 9636 | CORTEZ | CO | |
| 970-531 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | FRASER | CO | |
| 970-532 | QWEST CORPORATION | 9636 | BERTHOUD | CO | |
| 970-533 | QWEST CORPORATION | 9636 | MANCOS | CO | |
| 970-534 | T-MOBILE USA, INC. | 6529 | GREELEY | CO | |
| 970-535 | QWEST CORPORATION | 9636 | MEAD | CO | |
| 970-537 | UNION TELEPHONE COMPANY | 013B | KREMMLING | CO | |
| 970-539 | METROPCS, INC. | 5562 | GREELEY | CO | |
| 970-542 | QWEST CORPORATION | 9636 | FORTMORGAN | CO | |
| 970-544 | QWEST CORPORATION | 9636 | ASPEN | CO | |
| 970-547 | QWEST CORPORATION | 9636 | BRECKENRDG | CO | |
| 970-554 | N.E. COLORADO CELLULAR, INC. | 6874 | AKRON | CO | |
| 970-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | CO | |
| 970-556 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-560 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | CORTEZ | CO | |
| 970-562 | FARMERS TEL. CO., INC. | 2188 | PLEASANTVW | CO | |
| 970-563 | CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK | 2185 | IGNACIO | CO | |
| 970-564 | QWEST CORPORATION | 9636 | CORTEZ | CO | |
| 970-565 | QWEST CORPORATION | 9636 | CORTEZ | CO | |
| 970-566 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-567 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-568 | QWEST CORPORATION | 9636 | FT COLLINS | CO | |
| 970-569 | CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK | 2185 | EDWARDS | CO | |
| 970-570 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | CORTEZ | CO | |
| 970-571 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | STERLING | CO | |
| 970-574 | UNION TELEPHONE COMPANY | 013B | DINOSAUR | CO | |
| 970-577 | QWEST CORPORATION | 9636 | ESTES PARK | CO | |
| 970-580 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | STERLING | CO | |
| 970-581 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-583 | DUBOIS TEL. EXCH., INC. | 2291 | SOUTHBAGGS | CO | |
| 970-584 | T-MOBILE USA, INC. | 6529 | GREELEY | CO | |
| 970-586 | QWEST CORPORATION | 9636 | ESTES PARK | CO | |
| 970-587 | QWEST CORPORATION | 9636 | JOHNSTMLKN | CO | |
| 970-588 | CENTURYTEL OF COLORADO, INC. DBA CENTURYLINK | 2208 | MARVEL | CO | |
| 970-590 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | GREELEY | CO | |
| 970-593 | QWEST CORPORATION | 9636 | LOVELAND | CO | |
| 970-595 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | ECKLEY | CO | |
| 970-596 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | MONTROSE | CO | |
| 970-597 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | ECKLEY | CO | |
| 970-609 | ONVOY, LLC - CO | 026D | GRAND JCT | CO | |
| 970-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | 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.