NumberResearchRecent prefix assignments
360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026
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
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2012-04-26 | 204-599 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2012-04-26 | 226-647 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Kitchener-Waterloo | — |
| 2012-04-26 | 289-660 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ajax-Pickering | — |
| 2012-04-26 | 587-955 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2012-04-26 | 902-708 | not yet reported which blocks → | Iristel Inc. | 154E | Halifax | — |
| 2012-04-24 | 502-791 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | 6500 | LOUISVILLE | KY |
| 2012-04-24 | 516-544 | 0–9 XXXall 10 · 6 holders which blocks → | CSC VOICE, LLC | 612K | NASSAUZN06 | NY |
| 2012-04-24 | 516-597 | 0–9 XXXall 10 · 7 holders which blocks → | CSC VOICE, LLC | 612K | NASSAUZN08 | NY |
| 2012-04-24 | 516-743 | 0–9 XXXall 10 · 3 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NASSAUZN05 | NY |
| 2012-04-24 | 520-365 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | TUCSON | AZ |
| 2012-04-24 | 585-432 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | DANSVILLE | NY |
| 2012-04-24 | 607-888 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → | FINGER LAKES TECHNOLOGIES GROUP, INC. - NY | 629E | NORWICH | NY |
| 2012-04-24 | 646-582 | 0–9 XXXall 10 · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY |
| 2012-04-24 | 754-202 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | HOLLYWOOD | FL |
| 2012-04-23 | 404-436 | 0–9 XXXall 10 · 3 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | ATLANTA | GA |
| 2012-04-23 | 540-356 | 0–9 XXXall 10 · 6 holders which blocks → | COMCAST IP PHONE, LLC | 318J | HARTWOOD | VA |
| 2012-04-23 | 571-581 | 0–9 XXXall 10 · 6 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN17 | VA |
| 2012-04-23 | 708-314 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | CHICAGOHTS | IL |
| 2012-04-23 | 860-310 | 0–9 XXXall 10 · 5 holders which blocks → | COMCAST IP PHONE, LLC | 318J | HARTFORD | CT |
| 2012-04-23 | 909-368 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS NETWORKS, LLC | 899D | FONTANA | CA |
| 2012-04-20 | 204-813 | not yet reported which blocks → | Iristel Inc. | 154E | Winnipeg | — |
| 2012-04-20 | 224-215 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | WILMETTE | IL |
| 2012-04-20 | 289-934 | not yet reported which blocks → | TELUS Mobility | 8303 | Newmarket | — |
| 2012-04-20 | 506-804 | not yet reported which blocks → | Iristel Inc. | 154E | Moncton | — |
| 2012-04-20 | 506-805 | not yet reported which blocks → | Iristel Inc. | 154E | Moncton | — |
| 2012-04-20 | 506-806 | not yet reported which blocks → | Iristel Inc. | 154E | Moncton | — |
| 2012-04-20 | 506-807 | not yet reported which blocks → | Iristel Inc. | 154E | Moncton | — |
| 2012-04-20 | 604-352 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2012-04-20 | 803-305 | 0–9 XXXall 10 · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - SC | 077F | SUMTER | SC |
| 2012-04-20 | 902-706 | not yet reported which blocks → | Iristel Inc. | 154E | Halifax | — |
| 2012-04-20 | 902-707 | not yet reported which blocks → | Iristel Inc. | 154E | Halifax | — |
| 2012-04-19 | 289-940 | not yet reported which blocks → | Videotron Ltd. | 787G | Oakville | — |
| 2012-04-19 | 289-941 | not yet reported which blocks → | Videotron Ltd. | 787G | Hamilton | — |
| 2012-04-19 | 289-943 | not yet reported which blocks → | Videotron Ltd. | 787G | Oshawa | — |
| 2012-04-19 | 412-522 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PTTSBGZON1 | PA |
| 2012-04-19 | 470-220 | 0–9 XXXall 10 · 2 holders which blocks → | PEERLESS NETWORK OF GEORGIA, LLC - GA | 909E | TALLAPOOSA | GA |
| 2012-04-19 | 579-721 | not yet reported which blocks → | Videotron Ltd. | 8306 | Longueuil | — |
| 2012-04-19 | 604-706 | not yet reported which blocks → | Iristel Inc. | 154E | West Vancouver | — |
| 2012-04-19 | 615-761 | 0–9 XXXall 10 · 5 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2012-04-19 | 778-657 | not yet reported which blocks → | Iristel Inc. | 154E | Vancouver | — |
| 2012-04-19 | 778-658 | not yet reported which blocks → | Iristel Inc. | 154E | Vancouver | — |
| 2012-04-19 | 786-479 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MIAMI | FL |
| 2012-04-19 | 814-508 | 2XXX3XXX4XXX8XXX · 3 holders which blocks → | WINDSTREAM PENNSYLVANIA, INC. | 0176 | ROCKLAND | PA |
| 2012-04-19 | 832-662 | 0–9 XXXwhole prefix which blocks → | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | SPLENDORA | TX |
| 2012-04-19 | 917-635 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | NWYRCYZN06 | NY |
| 2012-04-19 | 984-661 | 0–9 XXXall 10 · 3 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | RALEIGH | NC |
| 2012-04-18 | 216-336 | 0–9 XXXall 10 · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | CLEVELAND | OH |
| 2012-04-18 | 218-203 | 0–9 XXXall 10 · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - MN | 8405 | BRAINERD | MN |
| 2012-04-18 | 401-606 | 0–9 XXXwhole prefix which blocks → | PAETEC ITEL, LLC | 829J | PROVIDENCE | RI |
| 2012-04-18 | 469-313 | 0–9 XXXwhole prefix which blocks → | PEERLESS NETWORK OF TEXAS, LLC - TX | 177F | DE SOTO | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.