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 |
|---|---|---|---|---|---|---|
| 2017-01-31 | 873-663 | not yet reported which blocks → | Videotron Ltd. | 328F | St-Andre-Avellin | — |
| 2017-01-30 | 581-675 | not yet reported which blocks → | Videotron Ltd. | 328F | Saint-Marc-des-Carrieres | — |
| 2017-01-30 | 581-677 | not yet reported which blocks → | Videotron Ltd. | 328F | Saint-Simon-de-Rimouski | — |
| 2017-01-30 | 581-678 | not yet reported which blocks → | Videotron Ltd. | 328F | Thetford Mines | — |
| 2017-01-30 | 702-833 | 0–9 XXXall 10 · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - NV | 587C | LAS VEGAS | NV |
| 2017-01-30 | 740-647 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | ZANESVILLE | OH |
| 2017-01-27 | 249-229 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Azilda | — |
| 2017-01-27 | 249-230 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Blezard Valley | — |
| 2017-01-27 | 249-231 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Capreol | — |
| 2017-01-27 | 249-232 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Chelmsford | — |
| 2017-01-27 | 249-233 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Coniston | — |
| 2017-01-27 | 249-234 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Espanola | — |
| 2017-01-27 | 249-235 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Garson | — |
| 2017-01-27 | 249-236 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Hanmer | — |
| 2017-01-27 | 249-237 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Levack | — |
| 2017-01-27 | 249-238 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Lively | — |
| 2017-01-27 | 249-239 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Sudbury | — |
| 2017-01-27 | 249-240 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Whitefish | — |
| 2017-01-27 | 470-481 | 0–9 XXXwhole prefix which blocks → | BANDWIDTH.COM CLEC, LLC - GA | 983E | ATLANTA | GA |
| 2017-01-27 | 470-632 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - GA | 983E | ATLANTA NW | GA |
| 2017-01-27 | 518-448 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | GLOVERSVL | NY |
| 2017-01-27 | 540-945 | 0–9 XXXall 10 · 2 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - VA | 4644 | ROANOKE | VA |
| 2017-01-27 | 581-676 | not yet reported which blocks → | Videotron Ltd. | 328F | Saint-Roch-des-Aulnaies | — |
| 2017-01-27 | 629-212 | 0–9 XXXwhole prefix which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | NASHVILLE | TN |
| 2017-01-27 | 937-721 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → | BANDWIDTH.COM CLEC, LLC - OH | 001F | MAGNETCSPG | OH |
| 2017-01-26 | 530-783 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PARADISE | CA |
| 2017-01-26 | 579-368 | not yet reported which blocks → | Videotron Ltd. | 328F | St-Jerome | — |
| 2017-01-26 | 579-960 | not yet reported which blocks → | Videotron Ltd. | 328F | Joliette | — |
| 2017-01-26 | 605-872 | 0–9 XXXall 10 · 5 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | RAPID CITY | SD |
| 2017-01-26 | 680-444 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → | EMPIRE LONG DISTANCE CORPORATION | 087H | GENEVA | NY |
| 2017-01-26 | 873-660 | not yet reported which blocks → | Videotron Ltd. | 328F | Ottawa-Hull | — |
| 2017-01-26 | 873-661 | not yet reported which blocks → | Videotron Ltd. | 328F | Richmond | — |
| 2017-01-26 | 873-662 | not yet reported which blocks → | Videotron Ltd. | 328F | Sherbrooke | — |
| 2017-01-26 | 901-245 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TN | 124F | ARLINGTON | TN |
| 2017-01-26 | 901-329 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TN | 124F | COVINGTON | TN |
| 2017-01-25 | 225-277 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - LA | 153F | WILSON | LA |
| 2017-01-25 | 262-420 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WAUKESHA | WI |
| 2017-01-25 | 269-443 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | KALAMAZOO | MI |
| 2017-01-25 | 304-244 | 0–9 XXXall 10 · 4 holders which blocks → | PEERLESS NETWORK OF WEST VIRGINIA, LLC - WV | 928H | MORGANTOWN | WV |
| 2017-01-25 | 470-442 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | ATLANTA NW | GA |
| 2017-01-25 | 581-671 | not yet reported which blocks → | Videotron Ltd. | 328F | Montmagny | — |
| 2017-01-25 | 581-672 | not yet reported which blocks → | Videotron Ltd. | 328F | Rimouski | — |
| 2017-01-25 | 581-673 | not yet reported which blocks → | Videotron Ltd. | 328F | Riviere-du-Loup | — |
| 2017-01-25 | 581-674 | not yet reported which blocks → | Videotron Ltd. | 328F | Roberval | — |
| 2017-01-25 | 762-217 | 0–9 XXXall 10 · 2 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | COMMERCE | GA |
| 2017-01-25 | 873-656 | not yet reported which blocks → | Videotron Ltd. | 328F | Lac-Megantic | — |
| 2017-01-25 | 873-657 | not yet reported which blocks → | Videotron Ltd. | 328F | Drummondville | — |
| 2017-01-25 | 873-658 | not yet reported which blocks → | Videotron Ltd. | 328F | Maniwaki | — |
| 2017-01-25 | 873-659 | not yet reported which blocks → | Videotron Ltd. | 328F | Mont-Laurier | — |
| 2017-01-24 | 431-729 | not yet reported which blocks → | TELUS Mobility | 8303 | Austin | — |
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.