NumberResearchRecent prefix assignments
338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
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 | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2022-12-05 | 579-526 | not yet reported which blocks → | Bell Canada | 984C | Contrecoeur | — |
| 2022-12-05 | 582-228 | 0–9 XXXall 10 · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ERIE | PA |
| 2022-12-05 | 873-747 | not yet reported which blocks → | Bell Canada | 984C | Campbell's Bay | — |
| 2022-12-05 | 919-503 | 0–9 XXXall 10 · 3 holders which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | PITTSBORO | NC |
| 2022-12-05 | 947-260 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BIRMINGHAM | MI |
| 2022-12-02 | 252-273 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | MOYOCK | NC |
| 2022-12-02 | 404-726 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - GA | 067D | ATLANTA | GA |
| 2022-12-02 | 480-520 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-12-02 | 848-342 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | FREEHOLD | NJ |
| 2022-12-01 | 240-973 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | WSNGTNZN12 | MD |
| 2022-12-01 | 249-541 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Emsdale | — |
| 2022-12-01 | 249-542 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Mactier | — |
| 2022-12-01 | 249-543 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Port Carling | — |
| 2022-12-01 | 256-986 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DECATUR | AL |
| 2022-12-01 | 269-394 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | BATTLE CRK | MI |
| 2022-12-01 | 276-289 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ABINGDON | VA |
| 2022-12-01 | 334-856 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DOTHAN | AL |
| 2022-12-01 | 343-796 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Inverary | — |
| 2022-12-01 | 343-797 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Tweed | — |
| 2022-12-01 | 343-798 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Pakenham | — |
| 2022-12-01 | 346-608 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | KATY | TX |
| 2022-12-01 | 423-816 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRISTOL | TN |
| 2022-12-01 | 424-483 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2022-12-01 | 430-309 | 1XXX which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | CYPRESSSPG | TX |
| 2022-12-01 | 445-279 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PHPHSBZN43 | PA |
| 2022-12-01 | 458-451 | 4XXX5XXX8XXX · 2 holders which blocks → | ONVOY, LLC - OR | 750E | BUTTEFALLS | OR |
| 2022-12-01 | 507-901 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | MANKATO | MN |
| 2022-12-01 | 534-207 | 9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FOX CREEK | WI |
| 2022-12-01 | 567-592 | 3XXX which blocks → | FARMERS MUTUAL TELEPHONE CO. DBA FMTC | 760J | NAPOLEON | OH |
| 2022-12-01 | 579-733 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Alphonse-de-Rodriguez | — |
| 2022-12-01 | 579-734 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Eustache | — |
| 2022-12-01 | 582-226 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | REYNOLDSVL | PA |
| 2022-12-01 | 640-240 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ALLENTOWN | NJ |
| 2022-12-01 | 681-393 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PRKRSBGZN1 | WV |
| 2022-12-01 | 828-491 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HENDERSNVL | NC |
| 2022-12-01 | 862-410 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEWARK | NJ |
| 2022-12-01 | 873-724 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Emile-de-Suffolk | — |
| 2022-12-01 | 873-726 | not yet reported which blocks → | TELUS Quebec | 2243 | Val-des-Bois | — |
| 2022-12-01 | 912-203 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BRUNSWICK | GA |
| 2022-12-01 | 943-206 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | COVINGTON | GA |
| 2022-12-01 | 947-262 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | AUBURN HTS | MI |
| 2022-11-30 | 260-727 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | COLUMBIACY | IN |
| 2022-11-30 | 343-513 | not yet reported which blocks → | Iristel Inc. | 154E | Jockvale | — |
| 2022-11-30 | 401-422 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PAWTUCKET | RI |
| 2022-11-30 | 448-994 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY SPECTRUM, LLC | 624H | PACE | FL |
| 2022-11-30 | 727-616 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | CLEARWATER | FL |
| 2022-11-30 | 769-399 | 0–9 XXXall 10 · 3 holders which blocks → | COMMIO, LLC | 939H | MERIDIAN | MS |
| 2022-11-30 | 839-229 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | WINNSBORO | SC |
| 2022-11-29 | 249-538 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Coldwater | — |
| 2022-11-29 | 249-539 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Bala | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.