NumberResearchRecent prefix assignments
347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026
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
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2015-12-09 | 845-203 | 0–9 XXXall 10 · 3 holders which blocks → | PEERLESS NETWORK OF NEW YORK, LLC - NY | 155E | CALLICOON | NY |
| 2015-12-09 | 929-810 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC- NY | 384C | NWYRCYZN04 | NY |
| 2015-12-09 | 941-260 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - FL | 937C | SARASOTA | FL |
| 2015-12-09 | 956-815 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - TX | 903C | LAREDO | TX |
| 2015-12-08 | 208-509 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | BOISE | ID |
| 2015-12-08 | 234-458 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | CANTON | OH |
| 2015-12-08 | 317-794 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - IN | 097D | INDIANAPLS | IN |
| 2015-12-08 | 346-214 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2015-12-08 | 346-340 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - TX | 903C | HSTNSUBURB | TX |
| 2015-12-08 | 506-513 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Bathurst | — |
| 2015-12-08 | 506-514 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Edmundston | — |
| 2015-12-08 | 506-515 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Fredericton | — |
| 2015-12-08 | 506-517 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Miramichi | — |
| 2015-12-08 | 506-518 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Moncton | — |
| 2015-12-08 | 506-519 | not yet reported which blocks → | Aliant Telecom(NB) | 8090 | Saint John | — |
| 2015-12-08 | 515-336 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | DES MOINES | IA |
| 2015-12-08 | 531-201 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - NE | 549E | OMAHA | NE |
| 2015-12-08 | 541-780 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - OR | 750E | EUGENE | OR |
| 2015-12-08 | 709-412 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Corner Brook | — |
| 2015-12-08 | 709-413 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Labrador City - Wabush | — |
| 2015-12-08 | 709-414 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Happy Valley - Goose Bay | — |
| 2015-12-08 | 709-415 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | St. John's | — |
| 2015-12-08 | 740-899 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | NEWARK | OH |
| 2015-12-08 | 740-921 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BELLAIRE | OH |
| 2015-12-08 | 902-409 | not yet reported which blocks → | Aliant Telecom (PEI) | 8087 | Charlottetown | — |
| 2015-12-08 | 902-413 | not yet reported which blocks → | Aliant Telecom (NS) | 8089 | Yarmouth | — |
| 2015-12-08 | 902-416 | not yet reported which blocks → | Aliant Telecom (NS) | 8089 | Sydney | — |
| 2015-12-08 | 902-502 | not yet reported which blocks → | Aliant Telecom (NS) | 8089 | Halifax | — |
| 2015-12-08 | 902-513 | not yet reported which blocks → | Aliant Telecom (NS) | 8089 | New Glasgow | — |
| 2015-12-08 | 970-852 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CO | 078F | GRAND JCT | CO |
| 2015-12-07 | 202-868 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC | 6402 | WSHNGTNZN1 | DC |
| 2015-12-07 | 210-361 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - TX | 903C | SANANTONIO | TX |
| 2015-12-07 | 231-234 | 1XXX which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | BUCKLEY | MI |
| 2015-12-07 | 321-425 | 0–9 XXXall 10 · 5 holders which blocks → | BHN IP ENABLED SERVICES, LLC | 045L | EAU GALLIE | FL |
| 2015-12-07 | 385-455 | 0–9 XXXall 10 · 4 holders which blocks → | FIRSTDIGITAL COMMUNICATIONS, LLC | 716D | LEHI | UT |
| 2015-12-07 | 385-707 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - UT | 871E | SALT LAKE | UT |
| 2015-12-07 | 401-771 | 0–9 XXXall 10 · 2 holders which blocks → | WIDE VOICE, LLC - RI | 343H | PROVIDENCE | RI |
| 2015-12-07 | 614-549 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | COLUMBUS | OH |
| 2015-12-07 | 646-804 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | NWYRCYZN01 | NY |
| 2015-12-07 | 657-288 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WESTMINSTR | CA |
| 2015-12-07 | 657-298 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CYPRESS | CA |
| 2015-12-07 | 657-324 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2015-12-07 | 747-215 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | GLENDALE | CA |
| 2015-12-07 | 805-825 | 0–9 XXXall 10 · 6 holders which blocks → | T-MOBILE USA, INC. | 6529 | ARROYOGRND | CA |
| 2015-12-07 | 862-872 | 0–9 XXXall 10 · 6 holders which blocks → | WIDE VOICE, LLC - NJ | 396H | NEWARK | NJ |
| 2015-12-04 | 202-851 | 0–9 XXXall 10 · 5 holders which blocks → | WIDE VOICE, LLC - DC | 538H | WSHNGTNZN1 | DC |
| 2015-12-04 | 306-200 | not yet reported which blocks → | SaskTel Mobility | 9868 | Saskatoon | — |
| 2015-12-04 | 306-510 | not yet reported which blocks → | SaskTel Mobility | 9868 | Regina | — |
| 2015-12-04 | 306-806 | not yet reported which blocks → | SaskTel Mobility | 9868 | Kindersley | — |
| 2015-12-04 | 306-809 | not yet reported which blocks → | SaskTel Mobility | 9868 | Weyburn | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.