NumberResearchRecent prefix assignments
372 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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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Nov 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 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 |
| 2018-03-16 | 510-607 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | OKLD MN-PD | CA |
| 2018-03-16 | 510-920 | 0–9 XXXall 10 · 4 holders which blocks → | SONIC TELECOM, LLC - CA | 433E | OKLD MN-PD | CA |
| 2018-03-16 | 540-566 | 0–9 XXXall 10 · 7 holders which blocks → | VONAGE AMERICA LLC | 197D | ROANOKE | VA |
| 2018-03-16 | 540-791 | 0XXX3XXX4XXX5XXX7XXX · 2 holders which blocks → | VONAGE AMERICA LLC | 197D | CULPEPER | VA |
| 2018-03-16 | 602-975 | 0–9 XXXall 10 · 5 holders which blocks → | VONAGE AMERICA LLC | 197D | PHOENIX | AZ |
| 2018-03-16 | 706-203 | 0–9 XXXall 10 · 5 holders which blocks → | COMCAST IP PHONE, LLC | 318J | DAWSONVL | GA |
| 2018-03-16 | 712-699 | 0XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | WALL LAKE | IA |
| 2018-03-16 | 914-685 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | YORKTN HTS | NY |
| 2018-03-16 | 986-200 | 0–9 XXXall 10 · 3 holders which blocks → | VONAGE AMERICA LLC | 197D | BOISE | ID |
| 2018-03-15 | 209-458 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | MODESTO | CA |
| 2018-03-15 | 256-629 | 0–9 XXXall 10 · 5 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FLORENCE | AL |
| 2018-03-15 | 270-203 | 0–9 XXXall 10 · 3 holders which blocks → | WINDSTREAM KENTUCKY EAST, INC. - LONDON | 9691 | UNIONTOWN | KY |
| 2018-03-15 | 325-999 | 0–9 XXXall 10 · 2 holders which blocks → | ONVOY, LLC - TX | 903C | ABILENE | TX |
| 2018-03-15 | 343-715 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Cardiff | — |
| 2018-03-15 | 343-716 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Coe Hill | — |
| 2018-03-15 | 343-717 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Denbigh | — |
| 2018-03-15 | 343-718 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Frankford | — |
| 2018-03-15 | 343-719 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Gilmour | — |
| 2018-03-15 | 343-720 | not yet reported which blocks → | Nexicom Telecommunications Inc | 995D | Bancroft | — |
| 2018-03-15 | 417-912 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | BOLIVAR | MO |
| 2018-03-15 | 431-373 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2018-03-15 | 609-905 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | VONAGE AMERICA LLC | 197D | OCEAN CITY | NJ |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.