NumberResearchRecent prefix assignments
375 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
Sep 2026
Aug 2026
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Jun 2026
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 |
|---|---|---|---|---|---|---|
| 2017-04-28 | 984-328 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | RALEIGH | NC |
| 2017-04-27 | 239-237 | 0–9 XXXall 10 · 7 holders which blocks → | TELNYX LLC | 073H | FORT MYERS | FL |
| 2017-04-27 | 325-413 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - TX | 903C | SONORA | TX |
| 2017-04-27 | 406-400 | 0–9 XXXall 10 · 2 holders which blocks → | TRIANGLE COMMUNICATION SYSTEM, INC. - MT- | 958H | HAVRE | MT |
| 2017-04-27 | 423-250 | 0–9 XXXall 10 · 5 holders which blocks → | TWIN LAKES COMMUNICATIONS, INC. - TN | 204G | CLEVELAND | TN |
| 2017-04-27 | 612-263 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | TWINCITIES | MN |
| 2017-04-27 | 623-469 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - AZ | 587F | PHOENIX | AZ |
| 2017-04-27 | 639-673 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Lumsden | — |
| 2017-04-27 | 639-674 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Lashburn | — |
| 2017-04-27 | 639-675 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Langenburg | — |
| 2017-04-27 | 639-676 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Lampman | — |
| 2017-04-27 | 639-677 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Kipling | — |
| 2017-04-27 | 639-678 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Kindersley | — |
| 2017-04-27 | 639-679 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Kerrobert | — |
| 2017-04-27 | 639-680 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Kelvington | — |
| 2017-04-27 | 639-681 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Ituna | — |
| 2017-04-27 | 639-682 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Indian Head | — |
| 2017-04-27 | 639-683 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Grenfell | — |
| 2017-04-27 | 639-684 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Fort Qu'Appelle | — |
| 2017-04-27 | 639-685 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Foam Lake | — |
| 2017-04-27 | 639-686 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Davidson | — |
| 2017-04-27 | 639-687 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Craik | — |
| 2017-04-27 | 639-688 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Churchbridge | — |
| 2017-04-27 | 639-689 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Carnduff | — |
| 2017-04-27 | 639-690 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Carlyle | — |
| 2017-04-27 | 657-358 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SANTA ANA | CA |
| 2017-04-27 | 725-867 | 0–9 XXXall 10 · 3 holders which blocks → | COMMIO, LLC | 939H | LAS VEGAS | NV |
| 2017-04-27 | 763-204 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN | 5816 | TWINCITIES | MN |
| 2017-04-27 | 781-227 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WALTHAM | MA |
| 2017-04-27 | 857-283 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | BOSTON | MA |
| 2017-04-27 | 947-201 | 0–9 XXXall 10 · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | AUBURN HTS | MI |
| 2017-04-27 | 971-867 | 0–9 XXXall 10 · 5 holders which blocks → | COMMIO, LLC | 939H | PORTLAND | OR |
| 2017-04-26 | 517-257 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | JACKSON | MI |
| 2017-04-26 | 639-654 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Wynyard | — |
| 2017-04-26 | 639-655 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Wilkie | — |
| 2017-04-26 | 639-656 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Whitewood | — |
| 2017-04-26 | 639-657 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Wadena | — |
| 2017-04-26 | 639-658 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Unity | — |
| 2017-04-26 | 639-659 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Stoughton | — |
| 2017-04-26 | 639-660 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | St. Walburg | — |
| 2017-04-26 | 639-661 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Southey | — |
| 2017-04-26 | 639-662 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Rosetown | — |
| 2017-04-26 | 639-663 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Regina Beach | — |
| 2017-04-26 | 639-664 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Redvers | — |
| 2017-04-26 | 639-665 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Raymore | — |
| 2017-04-26 | 639-667 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Oxbow | — |
| 2017-04-26 | 639-668 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Moosomin | — |
| 2017-04-26 | 639-669 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Meadow Lake | — |
| 2017-04-26 | 639-670 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Maidstone | — |
| 2017-04-26 | 639-671 | not yet reported which blocks → | Access Communications Co-operative Limited | 280H | Macklin | — |
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.