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
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Oct 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-06-26 | 657-478 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BREA | CA |
| 2017-06-26 | 873-621 | not yet reported which blocks → | Videotron Ltd. | 8306 | Nantes | — |
| 2017-06-26 | 920-381 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | APPLETON | WI |
| 2017-06-26 | 984-867 | 0–9 XXXall 10 · 6 holders which blocks → | COMMIO, LLC | 939H | RALEIGH | NC |
| 2017-06-23 | 206-889 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | SEATTLE | WA |
| 2017-06-23 | 314-931 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LADUE | MO |
| 2017-06-23 | 365-772 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Dunnville | — |
| 2017-06-23 | 365-773 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oakville | — |
| 2017-06-23 | 365-779 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Burlington | — |
| 2017-06-23 | 431-324 | not yet reported which blocks → | RFNow Inc. | 346G | Cromer | — |
| 2017-06-23 | 431-325 | not yet reported which blocks → | RFNow Inc. | 346G | Elkhorn | — |
| 2017-06-23 | 431-326 | not yet reported which blocks → | RFNow Inc. | 346G | Russell | — |
| 2017-06-23 | 431-333 | not yet reported which blocks → | RFNow Inc. | 346G | Oak Lake | — |
| 2017-06-23 | 431-642 | not yet reported which blocks → | RFNow Inc. | 346G | Reston | — |
| 2017-06-23 | 431-643 | not yet reported which blocks → | RFNow Inc. | 346G | Alexander | — |
| 2017-06-23 | 431-880 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Binscarth | — |
| 2017-06-23 | 431-883 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Rossburn | — |
| 2017-06-23 | 431-891 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Strathclair | — |
| 2017-06-23 | 573-965 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | VERSAILLES | MO |
| 2017-06-23 | 580-853 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | DURANT | OK |
| 2017-06-23 | 803-679 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC | 6398 | AIKEN | SC |
| 2017-06-22 | 205-407 | 0–9 XXXall 10 · 4 holders which blocks → | TELNYX LLC | 073H | BIRMINGHAM | AL |
| 2017-06-22 | 334-681 | 0XXX1XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → | FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - AL | 4464 | CAMDEN | AL |
| 2017-06-22 | 431-644 | not yet reported which blocks → | RFNow Inc. | 346G | Portage La Prairie | — |
| 2017-06-22 | 463-204 | 0–9 XXXall 10 · 3 holders which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | GREENWOOD | IN |
| 2017-06-22 | 480-923 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2017-06-22 | 731-273 | 0–9 XXXall 10 · 6 holders which blocks → | POWERTEL MEMPHIS LICENSES, INC. | 7474 | HUMBOLDT | TN |
| 2017-06-22 | 775-380 | 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NV | 4805 | SILVERPEAK | NV |
| 2017-06-22 | 867-200 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Yellowknife | — |
| 2017-06-22 | 867-203 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Arctic Bay | — |
| 2017-06-22 | 867-212 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Clyde River | — |
| 2017-06-22 | 867-213 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Coral Harbour | — |
| 2017-06-22 | 867-214 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Fort Providence | — |
| 2017-06-22 | 867-215 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Gjoa Haven | — |
| 2017-06-22 | 867-216 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Grise Fiord | — |
| 2017-06-22 | 867-217 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Sanirajak | — |
| 2017-06-22 | 867-218 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Kimmirut | — |
| 2017-06-22 | 867-219 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Kugaaruk | — |
| 2017-06-22 | 867-225 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Qikiqtarjuaq | — |
| 2017-06-22 | 867-227 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Naujaat | — |
| 2017-06-22 | 867-228 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Resolute | — |
| 2017-06-22 | 867-229 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Sanikiluaq | — |
| 2017-06-22 | 867-230 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Taloyoak | — |
| 2017-06-22 | 867-231 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Whale Cove | — |
| 2017-06-21 | 313-771 | 0–9 XXXall 10 · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - MI | 991E | DETROITZN1 | MI |
| 2017-06-21 | 318-543 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - LA | 153F | LISBON | LA |
| 2017-06-21 | 318-546 | 0XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - LA | 3232 | COTTON VLY | LA |
| 2017-06-21 | 321-272 | 0–9 XXXall 10 · 4 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | MELBOURNE | FL |
| 2017-06-21 | 343-483 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Morrisburg | — |
| 2017-06-21 | 587-625 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
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.