NumberResearchRecent prefix assignments
334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026
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 |
|---|---|---|---|---|---|---|
| 2005-07-22 | 647-403 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2005-07-22 | 647-404 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2005-07-22 | 647-407 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2005-07-22 | 671-987 | not yet reported which blocks → | PTI PACIFICA INC. | 387C | AGANA | GU |
| 2005-07-22 | 705-252 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Barrie | — |
| 2005-07-22 | 705-259 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Orillia | — |
| 2005-07-22 | 765-393 | 0–9 XXXall 10 · 5 holders which blocks → | COMCAST IP PHONE, LLC | 318J | ANDERSON | IN |
| 2005-07-22 | 813-500 | 0–9 XXXall 10 · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | TAMPA | FL |
| 2005-07-22 | 814-617 | 2XXX3XXX9XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | BREEZEWOOD | PA |
| 2005-07-22 | 828-515 | 0–9 XXXall 10 · 7 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | LEICESTER | NC |
| 2005-07-22 | 828-944 | 0XXX1XXX4XXX8XXX9XXX · 3 holders which blocks → | CHARTER IP ENABLED SERVICES, LLC | 792K | MAGGIE VLY | NC |
| 2005-07-22 | 905-912 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2005-07-22 | 951-345 | 0–9 XXXall 10 · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2005-07-21 | 605-445 | not yet reported which blocks → | MIDCONTINENT COMMUNICATIONS. - SD | 7076 | MILBANK | SD |
| 2005-07-21 | 702-622 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV | 6458 | LAS VEGAS | NV |
| 2005-07-21 | 724-803 | 0–9 XXXall 10 · 4 holders which blocks → | XO COMMUNICATIONS SERVICES, INC. - PA | 7341 | AVELLA | PA |
| 2005-07-21 | 860-898 | 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | NEWMILFORD | CT |
| 2005-07-20 | 205-506 | 0–9 XXXall 10 · 3 holders which blocks → | POWERTEL BIRMINGHAM LICENSES, INC. | 7475 | BIRMINGHAM | AL |
| 2005-07-20 | 262-439 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - WI | 225C | MILWAUKZN2 | WI |
| 2005-07-20 | 306-208 | not yet reported which blocks → | TELUS Mobility | 8303 | North Battleford | — |
| 2005-07-20 | 403-464 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2005-07-20 | 450-748 | not yet reported which blocks → | Videotron Ltd. | 8306 | Longueuil | — |
| 2005-07-20 | 450-857 | not yet reported which blocks → | Videotron Ltd. | 8306 | Boucherville | — |
| 2005-07-20 | 504-306 | 0–9 XXXwhole prefix which blocks → | LEVEL 3 TELECOM OF LOUISIANA, LLC - LA | 7488 | KENNER | LA |
| 2005-07-20 | 514-208 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2005-07-20 | 519-309 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brantford | — |
| 2005-07-20 | 540-313 | 0–9 XXXall 10 · 6 holders which blocks → | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WINCHESTER | VA |
| 2005-07-20 | 778-219 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Richmond | — |
| 2005-07-20 | 778-834 | not yet reported which blocks → | Bell Mobility | 6574 | Vancouver | — |
| 2005-07-20 | 814-575 | 0XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → | IDT AMERICA, CORP. - PA | 213C | LOYSBURG | PA |
| 2005-07-20 | 814-614 | 0XXX5XXX6XXX7XXX · 4 holders which blocks → | IDT AMERICA, CORP. - PA | 213C | MARTINSBG | PA |
| 2005-07-20 | 814-710 | 0XXX1XXX3XXX5XXX6XXX8XXX · 6 holders which blocks → | IDT AMERICA, CORP. - PA | 213C | CLAYSBURG | PA |
| 2005-07-20 | 814-729 | 0XXX2XXX3XXX5XXX6XXX · 4 holders which blocks → | IDT AMERICA, CORP. - PA | 213C | ROARINGSPG | PA |
| 2005-07-20 | 867-222 | not yet reported which blocks → | Bell Mobility | 6574 | Iqaluit | — |
| 2005-07-20 | 905-280 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | St. Catharines-Thorold | — |
| 2005-07-20 | 910-400 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NC | 3235 | WEST END | NC |
| 2005-07-20 | 936-727 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | NAVASOTA | TX |
| 2005-07-20 | 951-867 | 0–9 XXXall 10 · 7 holders which blocks → | T-MOBILE USA, INC. | 6529 | MORENO | CA |
| 2005-07-19 | 254-654 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | TEMPLE | TX |
| 2005-07-19 | 270-820 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | GREENVILLE | KY |
| 2005-07-19 | 320-533 | 0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → | ONVOY, LLC - MN | 184D | LONGPRAIRI | MN |
| 2005-07-19 | 812-329 | 0–9 XXXall 10 · 6 holders which blocks → | AT&T ENTERPRISES, LLC | 516C | BEDFORD | IN |
| 2005-07-19 | 843-530 | 0–9 XXXwhole prefix which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | CHARLESTON | SC |
| 2005-07-19 | 910-644 | 0–9 XXXall 10 · 4 holders which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | FAYETTEVL | NC |
| 2005-07-18 | 208-819 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID | 6565 | COERDALENE | ID |
| 2005-07-18 | 252-550 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC | 6324 | PINK HILL | NC |
| 2005-07-18 | 479-230 | not yet reported which blocks → | BANDWIDTH.COM CLEC, LLC - AR | 196F | ROGERS | AR |
| 2005-07-18 | 479-245 | not yet reported which blocks → | BANDWIDTH.COM CLEC, LLC - AR | 196F | BENTONVL | AR |
| 2005-07-18 | 479-303 | not yet reported which blocks → | VANTAGE TELECOM, LLC DBA NEWROADS TELECOM - AR | 5018 | SPRINGDALE | AR |
| 2005-07-18 | 479-455 | not yet reported which blocks → | BANDWIDTH.COM CLEC, LLC - AR | 196F | FAYETTEVL | AR |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.