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
New assignments by month
Sep 2026
Aug 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 956-621 | TWC IP ENABLED SERVICES, LLC | 793K | BROWNSVL | TX | |
| 956-627 | TWC IP ENABLED SERVICES, LLC | 793K | MCALLEN | TX | |
| 956-630 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-631 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-632 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-636 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | SANTA ROSA | TX | |
| 956-642 | VALLEY TEL. COOP., INC. | 2159 | LASARA | TX | |
| 956-645 | STPCS JOINT VENTURE, LLC | 4290 | LAREDO | TX | |
| 956-648 | STPCS JOINT VENTURE, LLC | 4290 | MCALLEN | TX | |
| 956-657 | SMARTCOM TELEPHONE, LLC | 4866 | MCALLEN | TX | |
| 956-659 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-661 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-664 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-668 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-682 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-683 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-686 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-687 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-688 | SOUTHWESTERN BELL | 9533 | MCALLEN | TX | |
| 956-689 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | RAYMONDVL | TX | |
| 956-690 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | RAYMONDVL | TX | |
| 956-691 | NUSO, LLC | 732J | LAREDO | TX | |
| 956-700 | TX | ||||
| 956-702 | SOUTHWESTERN BELL | 9533 | PHARR | TX | |
| 956-706 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-711 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 956-712 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-716 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | RIGRANDECY | TX | |
| 956-717 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-718 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-721 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-722 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-723 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-724 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-725 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-726 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-727 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-728 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-729 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-730 | SOUTHWESTERN BELL | 9533 | HARLINGEN | TX | |
| 956-734 | AT&T - LOCAL | 7421 | HARLINGEN | TX | |
| 956-739 | STPCS JOINT VENTURE, LLC | 4290 | MCALLEN | TX | |
| 956-740 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LAREDO | TX | |
| 956-743 | VALLEY TEL. COOP., INC. | 2159 | STILLMAN | TX | |
| 956-744 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LAREDO | TX | |
| 956-748 | SOUTHWESTERN BELL | 9533 | RIO HONDO | TX | |
| 956-750 | STPCS JOINT VENTURE, LLC | 4290 | ZAPATA | TX | |
| 956-752 | SOUTHWESTERN BELL | 9533 | HARLINGEN | TX | |
| 956-753 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-755 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX |
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.