Recent prefix assignments
334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026
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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2016-05-25 | 667-281 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → | PEERLESS NETWORK OF MARYLAND, LLC | 568G | SALISBURY | MD |
| 2016-05-25 | 778-362 | not yet reported which blocks → | TELUS | 8086 | South Kamloops | — |
| 2016-05-25 | 778-795 | not yet reported which blocks → | TELUS | 8086 | Westbank | — |
| 2016-05-25 | 778-796 | not yet reported which blocks → | TELUS | 8086 | Rutland | — |
| 2016-05-25 | 786-858 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | MIAMI | FL |
| 2016-05-25 | 804-483 | 0–9 XXXwhole prefix which blocks → | PAETEC ITEL, LLC | 829J | RICHMOND | VA |
| 2016-05-25 | 843-931 | 0–9 XXXall 10 · 5 holders which blocks → | PALMETTO TELEPHONE COMMUNICATIONS, LLC - SC | 154C | ST GEORGE | SC |
| 2016-05-25 | 873-265 | not yet reported which blocks → | Comwave Networks | 160G | Grand'Mere | — |
| 2016-05-25 | 873-302 | not yet reported which blocks → | Comwave Networks | 160G | Plessisville | — |
| 2016-05-25 | 937-991 | 0–9 XXXall 10 · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2016-05-25 | 949-662 | 0–9 XXXall 10 · 7 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | NEWPORTBCH | CA |
| 2016-05-24 | 206-483 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2016-05-24 | 209-280 | 0–9 XXXall 10 · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | LODI | CA |
| 2016-05-24 | 254-795 | 0XXX1XXX5XXX7XXX9XXX · 3 holders which blocks → | PATHWAY COM-TEL, INC. - TX | 8253 | HICO | TX |
| 2016-05-24 | 302-612 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE | 6393 | CAMDEN | DE |
| 2016-05-24 | 469-832 | 0–9 XXXwhole prefix which blocks → | SOUTHWESTERN BELL | 9533 | DALLAS | TX |
| 2016-05-24 | 484-512 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | READING | PA |
| 2016-05-24 | 661-365 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | PLDL PLDL | CA |
| 2016-05-24 | 865-328 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - TN | 525E | LENOIRCITY | TN |
| 2016-05-24 | 865-355 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | ONVOY, LLC - TN | 525E | LAKE CITY | TN |
| 2016-05-24 | 909-601 | 0–9 XXXall 10 · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2016-05-24 | 954-884 | 0–9 XXXall 10 · 8 holders which blocks → | PAETEC ITEL, LLC | 829J | POMPANOBCH | FL |
| 2016-05-23 | 216-954 | 0–9 XXXall 10 · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | 7532 | CLEVELAND | OH |
| 2016-05-23 | 346-954 | 0–9 XXXall 10 · 6 holders which blocks → | AT&T ENTERPRISES, LLC | 516C | DEER PARK | TX |
| 2016-05-23 | 425-690 | 0–9 XXXwhole prefix which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RENTON | WA |
| 2016-05-23 | 515-350 | 0–9 XXXall 10 · 4 holders which blocks → | UNITED STATES CELLULAR - IA | 6266 | DES MOINES | IA |
| 2016-05-23 | 518-948 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | ALBANY | NY |
| 2016-05-23 | 667-706 | 0–9 XXXall 10 · 5 holders which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | ELKTON | MD |
| 2016-05-23 | 934-800 | 0–9 XXXall 10 · 4 holders which blocks → | EVOLVE CELLULAR, INC. | 139F | YAPHANK | NY |
| 2016-05-23 | 934-852 | 0–9 XXXall 10 · 5 holders which blocks → | CABLEVISION LIGHTPATH, INC. - NY | 7126 | YAPHANK | NY |
| 2016-05-20 | 346-410 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HSTNSUBURB | TX |
| 2016-05-20 | 585-577 | 0–9 XXXall 10 · 5 holders which blocks → | PEERLESS NETWORK OF NEW YORK, LLC - NY | 155E | CANANDAGUA | NY |
| 2016-05-20 | 682-352 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GLENDALE | TX |
| 2016-05-20 | 867-208 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Cambridge Bay | — |
| 2016-05-20 | 867-209 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Kinngait | — |
| 2016-05-20 | 867-210 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Chesterfield Inlet | — |
| 2016-05-20 | 867-220 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Kugluktuk | — |
| 2016-05-20 | 867-221 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Pangnirtung | — |
| 2016-05-20 | 867-224 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Pond Inlet | — |
| 2016-05-20 | 867-226 | not yet reported which blocks → | SSi Micro Ltd. | 940G | Rankin Inlet | — |
| 2016-05-20 | 934-222 | 0–9 XXXall 10 · 6 holders which blocks → | EVOLVE CELLULAR, INC. | 139F | SOUTHAMPTN | NY |
| 2016-05-20 | 934-333 | 0–9 XXXall 10 · 6 holders which blocks → | EVOLVE CELLULAR, INC. | 139F | LINDENHST | NY |
| 2016-05-20 | 934-444 | 0–9 XXXall 10 · 4 holders which blocks → | EVOLVE CELLULAR, INC. | 139F | AMITYVILLE | NY |
| 2016-05-20 | 934-666 | 0–9 XXXall 10 · 3 holders which blocks → | EVOLVE CELLULAR, INC. | 139F | CENTRAISLP | NY |
| 2016-05-20 | 934-777 | 0–9 XXXall 10 · 3 holders which blocks → | EVOLVE CELLULAR, INC. | 139F | BRENTWOOD | NY |
| 2016-05-20 | 934-888 | 0–9 XXXall 10 · 5 holders which blocks → | EVOLVE CELLULAR, INC. | 139F | BAY SHORE | NY |
| 2016-05-19 | 267-866 | 0–9 XXXall 10 · 4 holders which blocks → | VONAGE AMERICA LLC | 197D | PHLDLPHZN1 | PA |
| 2016-05-19 | 480-417 | 0–9 XXXall 10 · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PHOENIX | AZ |
| 2016-05-19 | 581-219 | not yet reported which blocks → | TELUS Quebec | 2243 | Valcartier | — |
| 2016-05-19 | 602-831 | 0–9 XXXall 10 · 2 holders which blocks → | BANDWIDTH.COM CLEC, LLC - AZ | 587F | PHOENIX | AZ |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.