NumberResearchRecent prefix assignments
371 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
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2024-05-02 | 386-373 | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | FLAGLERBCH | FL |
| 2024-05-02 | 567-457 | NUSO, LLC | 732J | TOLEDO | OH |
| 2024-05-02 | 835-246 | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | W CHESTER | PA |
| 2024-05-02 | 929-765 | BANDWIDTH.COM CLEC, LLC - NY | 997E | NWYRCYZN08 | NY |
| 2024-05-02 | 951-731 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ARLINGTON | CA |
| 2024-05-01 | 213-812 | T-MOBILE USA, INC. | 6529 | LSAN DA 12 | CA |
| 2024-05-01 | 218-709 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DULUTH | MN |
| 2024-05-01 | 249-476 | Iristel Inc. | 154E | Foleyet | — |
| 2024-05-01 | 320-478 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ST CLOUD | MN |
| 2024-05-01 | 365-648 | Iristel Inc. | 154E | Claremont | — |
| 2024-05-01 | 365-902 | Iristel Inc. | 154E | Ancaster | — |
| 2024-05-01 | 382-895 | Iristel Inc. | 154E | Galt | — |
| 2024-05-01 | 385-580 | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-05-01 | 424-510 | T-MOBILE USA, INC. | 6529 | CMTN CMTN | CA |
| 2024-05-01 | 430-362 | TWILIO INTERNATIONAL, INC. | 506J | SHERMAN | TX |
| 2024-05-01 | 442-461 | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2024-05-01 | 475-368 | ONVOY, LLC - CT | 639C | DARIEN | CT |
| 2024-05-01 | 507-979 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROCHESTER | MN |
| 2024-05-01 | 515-678 | ONVOY SPECTRUM, LLC | 624H | ALDEN | IA |
| 2024-05-01 | 628-304 | T-MOBILE USA, INC. | 6529 | SNFC JUNPR | CA |
| 2024-05-01 | 641-265 | ONVOY SPECTRUM, LLC | 624H | ATTICA | IA |
| 2024-05-01 | 641-267 | ONVOY SPECTRUM, LLC | 624H | CHILLICOTH | IA |
| 2024-05-01 | 641-270 | ONVOY SPECTRUM, LLC | 624H | CINCINNATI | IA |
| 2024-05-01 | 641-271 | ONVOY SPECTRUM, LLC | 624H | CLEARFIELD | IA |
| 2024-05-01 | 641-273 | ONVOY SPECTRUM, LLC | 624H | DIAGONAL | IA |
| 2024-05-01 | 667-482 | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CATONSVL | MD |
| 2024-05-01 | 747-364 | T-MOBILE USA, INC. | 6529 | CANOGAPARK | CA |
| 2024-05-01 | 848-381 | ONVOY, LLC - NJ | 637C | ATLATCHLDS | NJ |
| 2024-05-01 | 867-673 | Iristel Inc. | 154E | Tuktoyaktuk | — |
| 2024-05-01 | 867-734 | Iristel Inc. | 154E | Behchoko | — |
| 2024-05-01 | 959-267 | ONVOY, LLC - CT | 639C | BRISTOL | CT |
| 2024-04-30 | 219-377 | T-MOBILE USA, INC. | 6529 | E CHICAGO | IN |
| 2024-04-30 | 224-608 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NORTHBROOK | IL |
| 2024-04-30 | 331-335 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST CHARLES | IL |
| 2024-04-30 | 458-326 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | EUGENE | OR |
| 2024-04-30 | 464-247 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LA GRANGE | IL |
| 2024-04-30 | 464-248 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OAK FOR SO | IL |
| 2024-04-30 | 478-408 | ONVOY, LLC - GA | 067D | CENTERVL | GA |
| 2024-04-30 | 539-322 | CALLWORKS CORPORATION | 475J | TULSA | OK |
| 2024-04-30 | 728-212 | ONVOY, LLC - FL | 937C | DELRAY BCH | FL |
| 2024-04-30 | 730-249 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OLNEY | IL |
| 2024-04-30 | 747-362 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VAN NUYS | CA |
| 2024-04-30 | 762-394 | POWERTEL ATLANTA LICENSES, INC. | 7473 | CALHOUN | GA |
| 2024-04-30 | 779-402 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MOMENCE | IL |
| 2024-04-30 | 828-816 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | HICKORY | NC |
| 2024-04-30 | 839-290 | POWERTEL ATLANTA LICENSES, INC. | 7473 | AIKEN | SC |
| 2024-04-30 | 943-258 | POWERTEL ATLANTA LICENSES, INC. | 7473 | CARROLLTON | GA |
| 2024-04-29 | 260-363 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FORT WAYNE | IN |
| 2024-04-29 | 319-490 | ONVOY, LLC - IA | 221F | CEDARFALLS | IA |
| 2024-04-29 | 326-221 | ONVOY SPECTRUM, LLC | 624H | BELFAST | OH |
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.