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
Jul 2026
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May 2026
Apr 2026
Mar 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 956-473 | SOUTHWESTERN BELL | 9533 | LAREDO | TX | |
| 956-481 | VALLEY TEL. COOP., INC. | 2159 | SAN ISIDRO | TX | |
| 956-485 | SOUTHWESTERN BELL | 9533 | SULLIVANCY | TX | |
| 956-486 | VALLEY TEL. COOP., INC. | 2159 | EL SAUZ | TX | |
| 956-487 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | RIGRANDECY | TX | |
| 956-488 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | RIGRANDECY | TX | |
| 956-490 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-491 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-492 | WAVENATION, LLC | 700J | HARLINGEN | TX | |
| 956-493 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-494 | METROPCS, INC. | 5562 | HARLINGEN | TX | |
| 956-495 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-496 | TWC IP ENABLED SERVICES, LLC | 793K | HARLINGEN | TX | |
| 956-497 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-498 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-499 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-500 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | RIGRANDECY | TX | |
| 956-501 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-504 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 956-514 | SOUTHWESTERN BELL | 9533 | MERCEDES | TX | |
| 956-519 | SOUTHWESTERN BELL | 9533 | MISSION | TX | |
| 956-532 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | WESLACO | TX | |
| 956-535 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-541 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-542 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-544 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-545 | TWC IP ENABLED SERVICES, LLC | 793K | BROWNSVL | TX | |
| 956-546 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-547 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-548 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-550 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-551 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | BROWNSVL | TX | |
| 956-553 | ONVOY SPECTRUM, LLC | 624H | HARLINGEN | TX | |
| 956-554 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | TX | |
| 956-565 | SOUTHWESTERN BELL | 9533 | MERCEDES | TX | |
| 956-568 | TWC IP ENABLED SERVICES, LLC | 793K | LAREDO | TX | |
| 956-571 | STPCS JOINT VENTURE, LLC | 4290 | HARLINGEN | TX | |
| 956-572 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BROWNSVL | TX | |
| 956-574 | SOUTHWESTERN BELL | 9533 | BROWNSVL | TX | |
| 956-580 | SOUTHWESTERN BELL | 9533 | MISSION | TX | |
| 956-581 | SOUTHWESTERN BELL | 9533 | MISSION | TX | |
| 956-583 | SOUTHWESTERN BELL | 9533 | MISSION | TX | |
| 956-584 | SOUTHWESTERN BELL | 9533 | MISSION | TX | |
| 956-585 | SOUTHWESTERN BELL | 9533 | MISSION | TX | |
| 956-605 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EDINBURG | TX | |
| 956-607 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EDINBURG | TX | |
| 956-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 956-618 | SOUTHWESTERN BELL | 9533 | MCALLEN | 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.