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
Aug 2026
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May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2018-03-20 | 581-567 | not yet reported which blocks → | Distributel | 083E | St-Ambroise-de-Chicoutimi | — |
| 2018-03-20 | 581-568 | not yet reported which blocks → | Distributel | 083E | St-Fulgence | — |
| 2018-03-20 | 581-569 | not yet reported which blocks → | Distributel | 083E | St-Honore (Chicoutimi Co.) | — |
| 2018-03-20 | 581-570 | not yet reported which blocks → | Distributel | 083E | Ste-Rose-du-Nord | — |
| 2018-03-20 | 581-571 | not yet reported which blocks → | Distributel | 083E | Anse-St-Jean | — |
| 2018-03-20 | 720-892 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CO | 078F | DENVER | CO |
| 2018-03-20 | 805-608 | 0–9 XXXall 10 · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | SANTAMARIA | CA |
| 2018-03-20 | 843-823 | 0–9 XXXall 10 · 3 holders which blocks → | VONAGE AMERICA LLC | 197D | CHARLESTON | SC |
| 2018-03-20 | 941-250 | 0–9 XXXall 10 · 3 holders which blocks → | METROPCS, INC. | 5562 | SARASOTA | FL |
| 2018-03-19 | 236-308 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 236-558 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 236-808 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 236-818 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 236-838 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 236-855 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 236-858 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 236-877 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 236-878 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 236-885 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2018-03-19 | 279-399 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SCRM MAIN | CA |
| 2018-03-19 | 431-892 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Gilbert Plains | — |
| 2018-03-19 | 431-893 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Grandview | — |
| 2018-03-19 | 470-386 | 0–9 XXXall 10 · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - GA | 8392 | ATLANTA | GA |
| 2018-03-19 | 484-656 | 0–9 XXXall 10 · 4 holders which blocks → | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | ALLENTOWN | PA |
| 2018-03-19 | 516-530 | 0–9 XXXall 10 · 4 holders which blocks → | CABLEVISION LIGHTPATH, INC. - NY | 7126 | NASSAUZN08 | NY |
| 2018-03-19 | 571-636 | 0–9 XXXall 10 · 7 holders which blocks → | BANDWIDTH.COM CLEC, LLC - VA | 079F | HAYMARKET | VA |
| 2018-03-19 | 587-916 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2018-03-19 | 587-934 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2018-03-19 | 647-307 | not yet reported which blocks → | Bell Mobility | 6574 | Toronto | — |
| 2018-03-19 | 647-399 | not yet reported which blocks → | InnSysVoice Corp | 383H | Toronto | — |
| 2018-03-19 | 716-314 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | BUFFALO | NY |
| 2018-03-16 | 202-975 | 0–9 XXXall 10 · 5 holders which blocks → | VONAGE AMERICA LLC | 197D | WSHNGTNZN1 | DC |
| 2018-03-16 | 332-203 | 0–9 XXXall 10 · 3 holders which blocks → | VONAGE AMERICA LLC | 197D | NWYRCYZN01 | NY |
| 2018-03-16 | 343-712 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Arden | — |
| 2018-03-16 | 343-713 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Bloomfield | — |
| 2018-03-16 | 343-714 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Brighton | — |
| 2018-03-16 | 343-721 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Madoc | — |
| 2018-03-16 | 343-722 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Marmora | — |
| 2018-03-16 | 343-723 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Maynooth | — |
| 2018-03-16 | 343-724 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Northbrook | — |
| 2018-03-16 | 343-725 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Picton | — |
| 2018-03-16 | 343-726 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Plevna | — |
| 2018-03-16 | 343-727 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Stirling | — |
| 2018-03-16 | 343-728 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Thurlow | — |
| 2018-03-16 | 343-729 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Trenton | — |
| 2018-03-16 | 343-730 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Belleville | — |
| 2018-03-16 | 343-731 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Tweed | — |
| 2018-03-16 | 343-732 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Wellington | — |
| 2018-03-16 | 343-733 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Wooler | — |
| 2018-03-16 | 478-241 | 0–9 XXXall 10 · 4 holders which blocks → | BANDWIDTH.COM CLEC, LLC - GA | 983E | LOUISVILLE | GA |
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.