NumberResearchRecent prefix assignments
369 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
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
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 307-634 | QWEST CORPORATION | 9636 | CHEYENNE | WY | |
| 307-635 | QWEST CORPORATION | 9636 | CHEYENNE | WY | |
| 307-637 | QWEST CORPORATION | 9636 | CHEYENNE | WY | |
| 307-638 | QWEST CORPORATION | 9636 | CHEYENNE | WY | |
| 307-640 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CHEYENNE | WY | |
| 307-643 | QWEST CORPORATION | 9631 | WSPEARFISH | WY | |
| 307-645 | PROJECT TEL. CO., INC. | 2250 | CLARK | WY | |
| 307-649 | RT COMMUNICATIONS | 3410 | CARPENTER | WY | |
| 307-650 | AIRUS, INC. - WY | 581H | CHEYENNE | WY | |
| 307-654 | SILVER STAR TEL CO INC | 2295 | ALPINE | WY | |
| 307-655 | QWEST CORPORATION | 9636 | SHERIDAN | WY | |
| 307-660 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GILLETTE | WY | |
| 307-663 | GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM | 1659 | W EDGEMONT | WY | |
| 307-664 | TRI-COUNTY TEL. ASSN., INC. | 2296 | FRANNIE | WY | |
| 307-670 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | GILLETTE | WY | |
| 307-672 | QWEST CORPORATION | 9636 | SHERIDAN | WY | |
| 307-673 | QWEST CORPORATION | 9636 | SHERIDAN | WY | |
| 307-674 | QWEST CORPORATION | 9636 | SHERIDAN | WY | |
| 307-677 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | EVANSTON | WY | |
| 307-679 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | EVANSTON | WY | |
| 307-680 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GILLETTE | WY | |
| 307-682 | QWEST CORPORATION | 9636 | GILLETTE | WY | |
| 307-683 | QWEST CORPORATION | 9636 | SHERIDAN | WY | |
| 307-684 | QWEST CORPORATION | 9636 | BUFFALO | WY | |
| 307-685 | QWEST CORPORATION | 9636 | GILLETTE | WY | |
| 307-686 | QWEST CORPORATION | 9636 | GILLETTE | WY | |
| 307-687 | QWEST CORPORATION | 9636 | GILLETTE | WY | |
| 307-689 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | GILLETTE | WY | |
| 307-690 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | JACKSON | WY | |
| 307-699 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WY | 6566 | JACKSON | WY | |
| 307-700 | WY | ||||
| 307-711 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | WY | |
| 307-721 | QWEST CORPORATION | 9636 | LARAMIE | WY | |
| 307-725 | WY | ||||
| 307-727 | UNION TELEPHONE COMPANY | 013B | KEMMERER | WY | |
| 307-728 | UNION TELEPHONE COMPANY | 013B | SHOSHONI | WY | |
| 307-730 | UNION TELEPHONE COMPANY | 013B | JACKSON | WY | |
| 307-732 | QWEST CORPORATION | 9636 | JACKSON | WY | |
| 307-733 | QWEST CORPORATION | 9636 | JACKSON | WY | |
| 307-734 | QWEST CORPORATION | 9636 | JACKSON | WY | |
| 307-735 | QWEST CORPORATION | 9636 | GLENDO | WY | |
| 307-736 | RANGE TEL COOP INC | 2251 | ARVADA | WY | |
| 307-737 | RANGE TEL COOP INC | 2251 | SOUTHESRDN | WY | |
| 307-738 | RT COMMUNICATIONS | 3410 | KAYCEE | WY | |
| 307-739 | QWEST CORPORATION | 9636 | JACKSON | WY | |
| 307-740 | UNION TELEPHONE COMPANY | 013B | JACKSON | WY | |
| 307-742 | QWEST CORPORATION | 9636 | LARAMIE | WY | |
| 307-745 | QWEST CORPORATION | 9636 | LARAMIE | WY | |
| 307-746 | RT COMMUNICATIONS | 3410 | NEWCASTLE | WY | |
| 307-750 | RANGE TEL COOP INC | 2251 | DECKER | WY |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.