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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 918-284 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TULSA | OK | |
| 918-285 | SOUTHWESTERN BELL | 9533 | CUSHING | OK | |
| 918-286 | COMCAST IP PHONE, LLC | 318J | BROKENARRW | OK | |
| 918-287 | SOUTHWESTERN BELL | 9533 | PAWHUSKA | OK | |
| 918-288 | SOUTHWESTERN BELL | 9533 | SPERRY | OK | |
| 918-289 | T-MOBILE USA, INC. | 6529 | TULSA | OK | |
| 918-291 | SOUTHWESTERN BELL | 9533 | JENKS | OK | |
| 918-292 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-293 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-294 | VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW | 1165 | BROKENARRW | OK | |
| 918-295 | SOUTHWESTERN BELL | 9533 | TULSA | OK | |
| 918-296 | SOUTHWESTERN BELL | 9533 | JENKS | OK | |
| 918-297 | SOUTHWESTERN BELL | 9533 | HARTSHORNE | OK | |
| 918-298 | SOUTHWESTERN BELL | 9533 | JENKS | OK | |
| 918-299 | SOUTHWESTERN BELL | 9533 | JENKS | OK | |
| 918-300 | CENTURYLINK COMMUNICATIONS, LLC | 508J | TALIHINA | OK | |
| 918-301 | ONVOY, LLC - OK | 409F | TULSA | OK | |
| 918-302 | SOUTHWESTERN BELL | 9533 | MCALESTER | OK | |
| 918-303 | ONVOY, LLC - OK | 409F | PAWNEE | OK | |
| 918-304 | SOUTHWESTERN BELL | 9533 | OKMULGEE | OK | |
| 918-307 | VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW | 1165 | BROKENARRW | OK | |
| 918-309 | UNITED STATES CELLULAR - OK | 6272 | MIAMI | OK | |
| 918-310 | UNITED STATES CELLULAR - OK | 6272 | MUSKOGEE | OK | |
| 918-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | OK | |
| 918-317 | ONVOY, LLC - OK | 409F | BROKENARRW | OK | |
| 918-318 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MCALESTER | OK | |
| 918-319 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HENRYETTA | OK | |
| 918-320 | T-MOBILE USA, INC. | 6529 | MIAMI | OK | |
| 918-321 | SOUTHWESTERN BELL | 9533 | KIEFER | OK | |
| 918-322 | SOUTHWESTERN BELL | 9533 | KIEFER | OK | |
| 918-323 | SOUTHWESTERN BELL | 9533 | VINITA | OK | |
| 918-324 | SOUTHWESTERN BELL | 9533 | DEPEW | OK | |
| 918-326 | BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC | 1142 | COLCORD | OK | |
| 918-327 | T-MOBILE USA, INC. | 6529 | BARTLESVL | OK | |
| 918-328 | ONVOY, LLC - OK | 409F | RALSTON | OK | |
| 918-329 | T-MOBILE USA, INC. | 6529 | MCALESTER | OK | |
| 918-330 | SOUTHWESTERN BELL | 9533 | BARTLESVL | OK | |
| 918-331 | SOUTHWESTERN BELL | 9533 | BARTLESVL | OK | |
| 918-332 | SOUTHWESTERN BELL | 9533 | BARTLESVL | OK | |
| 918-333 | SOUTHWESTERN BELL | 9533 | BARTLESVL | OK | |
| 918-334 | CANADIAN VALLEY TEL. CO. | 1974 | CROWDER | OK | |
| 918-335 | SOUTHWESTERN BELL | 9533 | BARTLESVL | OK | |
| 918-336 | SOUTHWESTERN BELL | 9533 | BARTLESVL | OK | |
| 918-337 | SOUTHWESTERN BELL | 9533 | BARTLESVL | OK | |
| 918-338 | SOUTHWESTERN BELL | 9533 | BARTLESVL | OK | |
| 918-339 | CANADIAN VALLEY TEL. CO. | 1974 | CANADIAN | OK | |
| 918-340 | T-MOBILE USA, INC. | 6529 | TULSA | OK | |
| 918-341 | SOUTHWESTERN BELL | 9533 | CLAREMORE | OK | |
| 918-342 | SOUTHWESTERN BELL | 9533 | CLAREMORE | OK | |
| 918-343 | SOUTHWESTERN BELL | 9533 | CLAREMORE | 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.