NumberResearchRecent prefix assignments
355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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
Sep 2026
Aug 2026
Jul 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 918-523 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-524 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-525 | METROPCS, INC. | 5562 | TAHLEQUAH | OK | |
| 918-526 | ONVOY, LLC - OK | 409F | TULSA | OK | |
| 918-527 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TULSA | OK | |
| 918-528 | PAETEC ITEL, LLC | 829J | JENKS | OK | |
| 918-529 | BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC | 1142 | WMAYSVILLE | OK | |
| 918-531 | TOTAH COMMUNICATIONS, INC. | 2030 | WANN | OK | |
| 918-532 | SOUTHWESTERN BELL | 9533 | COPAN | OK | |
| 918-533 | UNITED STATES CELLULAR - OK | 6272 | MIAMI | OK | |
| 918-534 | SOUTHWESTERN BELL | 9533 | DEWEY | OK | |
| 918-535 | TOTAH COMMUNICATIONS, INC. | 2030 | OCHELATA | OK | |
| 918-536 | VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW | 1165 | RAMONA | OK | |
| 918-537 | T-MOBILE USA, INC. | 6529 | MUSKOGEE | OK | |
| 918-538 | CIMARRON TEL. CO. | 1982 | BLACKBURN | OK | |
| 918-540 | SOUTHWESTERN BELL | 9533 | MIAMI | OK | |
| 918-541 | SOUTHWESTERN BELL | 9533 | MIAMI | OK | |
| 918-542 | SOUTHWESTERN BELL | 9533 | MIAMI | OK | |
| 918-543 | OKLAHOMA COMMUNICATION SYSTEM, INC. | 1984 | INOLA | OK | |
| 918-544 | SOUTHWESTERN BELL | 9533 | MIAMI | OK | |
| 918-545 | TOTAH COMMUNICATIONS, INC. | 2030 | OGLESBY | OK | |
| 918-546 | CHEROKEE TEL. CO. | 1979 | STUART | OK | |
| 918-547 | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | TULSA | OK | |
| 918-548 | WINDSTREAM OKLAHOMA, INC. | 1965 | SAVANNA | OK | |
| 918-549 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-551 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-552 | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | STIGLER | OK | |
| 918-554 | PEERLESS NETWORK OF OKLAHOMA, LLC - OK | 384H | BRAGGS | OK | |
| 918-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | OK | |
| 918-556 | ONVOY, LLC - OK | 409F | TULSA | OK | |
| 918-558 | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | MCALESTER | OK | |
| 918-559 | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | NOWATA | OK | |
| 918-560 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-561 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-562 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | OWASSO | OK | |
| 918-563 | OKLAHOMA WESTERN TEL. CO. | 2014 | ALBION | OK | |
| 918-564 | OKLAHOMA WINDSTREAM, INC. | 2011 | POTEAU | OK | |
| 918-566 | TOTAH COMMUNICATIONS, INC. | 2030 | SO HEWINS | OK | |
| 918-567 | SOUTHWESTERN BELL | 9533 | TALIHINA | OK | |
| 918-569 | OKLAHOMA WESTERN TEL. CO. | 2014 | CLAYTON | OK | |
| 918-571 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SALLISAW | OK | |
| 918-573 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-574 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-576 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-577 | CSC VOICE, LLC | 612K | MUSKOGEE | OK | |
| 918-579 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-581 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-582 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-583 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-584 | SOUTHWESTERN BELL | 9533 | TULSA | OK |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.