NumberResearchRecent prefix assignments
355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks — who really holds the numbers | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2002-06-04 | 908-897 | 9 of 10 blocks assigned · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | SUMMIT | NJ |
| 2002-06-04 | 908-899 | 8 of 10 blocks assigned · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | MILFORD | NJ |
| 2002-06-04 | 973-262 | Whole prefix — all 10 blocks, 1 holder which blocks → | OMNIPOINT COMMUNICATIONS, INC. - NJ | 6623 | NEWTON | NJ |
| 2002-06-04 | 973-500 | 8 of 10 blocks assigned · 6 holders which blocks → | COOPERATIVE COMMUNICATIONS, INC. | 8407 | ANDOVER | NJ |
| 2002-06-04 | 978-798 | 10 of 10 blocks assigned · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LEOMINSTER | MA |
| 2002-06-03 | 717-587 | 0 of 10 blocks assigned · 0 holders which blocks → | METROPCS, INC. | 5562 | LANCASTER | PA |
| 2002-06-03 | 802-377 | 9 of 10 blocks assigned · 4 holders which blocks → | METROPCS, INC. | 5562 | MIDDLEBURY | VT |
| 2002-06-03 | 819-513 | Not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Mont-Laurier | — |
| 2002-05-31 | 204-887 | Not yet reported which blocks → | Fido Solutions Inc. | 5643 | Winnipeg | — |
| 2002-05-31 | 239-645 | 10 of 10 blocks assigned · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | FORT MYERS | FL |
| 2002-05-31 | 250-891 | Not yet reported which blocks → | Fido Solutions Inc. | 5643 | Victoria | — |
| 2002-05-31 | 347-733 | 0 of 10 blocks assigned · 0 holders which blocks → | METROPCS, INC. | 5562 | NWYRCYZN07 | NY |
| 2002-05-31 | 352-273 | Not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | GAINESVL | FL |
| 2002-05-31 | 432-249 | 7 of 10 blocks assigned · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | FORT DAVIS | TX |
| 2002-05-31 | 432-290 | Not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | FTSTOCKTON | TX |
| 2002-05-31 | 432-295 | 7 of 10 blocks assigned · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | MARFA | TX |
| 2002-05-31 | 432-878 | 9 of 10 blocks assigned · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GOLDSMITH | TX |
| 2002-05-31 | 509-250 | 9 of 10 blocks assigned · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | GOLDENDALE | WA |
| 2002-05-31 | 509-637 | 10 of 10 blocks assigned · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WH SALMON | WA |
| 2002-05-31 | 520-220 | 5 of 10 blocks assigned · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | SIERRAVIST | AZ |
| 2002-05-31 | 660-227 | 6 of 10 blocks assigned · 5 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | BUTLER | MO |
| 2002-05-31 | 678-880 | 10 of 10 blocks assigned · 4 holders which blocks → | WINDSTREAM GEORGIA COMMUNICATIONS CORP. | 4332 | CANTON | GA |
| 2002-05-31 | 780-885 | Not yet reported which blocks → | Fido Solutions Inc. | 5643 | Edmonton | — |
| 2002-05-31 | 786-476 | Not yet reported which blocks → | FUSION CLOUD SERVICES, LLC | 206A | MIAMI | FL |
| 2002-05-31 | 786-624 | 5 of 10 blocks assigned · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | MIAMI | FL |
| 2002-05-31 | 806-478 | 8 of 10 blocks assigned · 3 holders which blocks → | ONVOY, LLC - TX | 903C | LOCKNEY | TX |
| 2002-05-31 | 850-381 | Not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | PANAMACITY | FL |
| 2002-05-31 | 856-381 | 9 of 10 blocks assigned · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | WOODBURY | NJ |
| 2002-05-31 | 903-263 | 8 of 10 blocks assigned · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | CARTHAGE | TX |
| 2002-05-31 | 912-279 | 4 of 10 blocks assigned · 2 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | BRUNSWICK | GA |
| 2002-05-31 | 915-440 | 7 of 10 blocks assigned · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CLINT | TX |
| 2002-05-31 | 978-460 | 4 of 10 blocks assigned · 1 holder which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | SUDBURY | MA |
| 2002-05-30 | 203-520 | Not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | BRIDGEPORT | CT |
| 2002-05-30 | 203-548 | 10 of 10 blocks assigned · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | STAMFORD | CT |
| 2002-05-30 | 203-808 | 6 of 10 blocks assigned · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | WATERBURY | CT |
| 2002-05-30 | 229-379 | 7 of 10 blocks assigned · 3 holders which blocks → | POWERTEL ATLANTA LICENSES, INC. | 7473 | THOMASVL | GA |
| 2002-05-30 | 267-477 | 9 of 10 blocks assigned · 5 holders which blocks → | CORE COMMUNICATIONS, INC. - PA | 3806 | LINELXNGTN | PA |
| 2002-05-30 | 479-689 | 9 of 10 blocks assigned · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | VAN BUREN | AR |
| 2002-05-30 | 701-864 | 10 of 10 blocks assigned · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - ND | 8054 | GRANDFORKS | ND |
| 2002-05-30 | 715-441 | 3 of 10 blocks assigned · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | HUDSON | WI |
| 2002-05-30 | 715-816 | 5 of 10 blocks assigned · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GORDON | WI |
| 2002-05-30 | 715-817 | 8 of 10 blocks assigned · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SUPERIOR | WI |
| 2002-05-30 | 717-773 | 10 of 10 blocks assigned · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HARISBGZN1 | PA |
| 2002-05-30 | 806-557 | 10 of 10 blocks assigned · 6 holders which blocks → | ONVOY, LLC - TX | 903C | CANYON | TX |
| 2002-05-30 | 856-631 | 8 of 10 blocks assigned · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | HADDON HTS | NJ |
| 2002-05-30 | 860-759 | 4 of 10 blocks assigned · 1 holder which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MIDDLETOWN | CT |
| 2002-05-30 | 860-839 | 3 of 10 blocks assigned · 1 holder which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NEWBRITAIN | CT |
| 2002-05-30 | 860-891 | 9 of 10 blocks assigned · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | MOODUS | CT |
| 2002-05-30 | 903-699 | 3 of 10 blocks assigned · 1 holder which blocks → | AT&T - LOCAL | 7421 | LONGVIEW | TX |
| 2002-05-29 | 262-732 | 9 of 10 blocks assigned · 7 holders which blocks → | LEVEL 3 TELECOM OF WISCONSIN, LP - WI | 7322 | CALEDONIA | WI |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.