NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2020-07-06 207-814 0–9 XXXall 10 · 4 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 BANGOR ME
2020-07-06 272-345 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LOYALSOCK PA
2020-07-06 272-766 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H LOCK HAVEN PA
2020-07-06 272-788 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LEWISBURG PA
2020-07-06 272-822 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRACTEL, LLC 965H JERSEYSHOR PA
2020-07-06 281-626 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C ROSHARON TX
2020-07-06 385-354 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J SALT LAKE UT
2020-07-06 406-341 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MT 453F MANHATTAN MT
2020-07-06 409-509 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C JASPER TX
2020-07-06 431-277 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2020-07-06 431-407 not yet reported which blocks → LES.NET (1996) Inc. 141F Russell —
2020-07-06 431-409 not yet reported which blocks → LES.NET (1996) Inc. 141F Ste. Agathe —
2020-07-06 431-410 not yet reported which blocks → LES.NET (1996) Inc. 141F Stony Mountain —
2020-07-06 431-412 not yet reported which blocks → LES.NET (1996) Inc. 141F Virden —
2020-07-06 509-501 1XXX5XXX · 2 holders which blocks → COMPUTERS 5*, INC. DBA LOCALTEL - WA 3229 ODESSA WA
2020-07-06 531-249 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D LINCOLN NE
2020-07-06 618-591 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC 224C ELDORADO IL
2020-07-06 618-598 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC 224C OKAWVILLE IL
2020-07-06 618-851 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H ANNA IL
2020-07-06 619-776 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LA MESA CA
2020-07-06 667-283 0–9 XXXall 10 · 6 holders which blocks → AT&T - LOCAL 7421 FORK MD
2020-07-06 712-565 2XXX5XXX6XXX7XXX · 3 holders which blocks → WEBSTER-CALHOUN TELEPHONE ASSOCIATION - IA 482J LOHRVILLE IA
2020-07-06 725-236 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2020-07-06 726-245 0–9 XXXall 10 · 4 holders which blocks → EVOLVE CELLULAR, INC. 139F SANANTONIO TX
2020-07-06 782-640 not yet reported which blocks → Bell Mobility Aliant 329A Halifax —
2020-07-06 804-582 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 FIFE VA
2020-07-06 848-291 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D WOODBRIDGE NJ
2020-07-06 854-206 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONCKS COR SC
2020-07-06 864-894 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - SC 548E SIMPSONVL SC
2020-07-06 865-369 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J KNOXVILLE TN
2020-07-06 901-538 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J MEMPHIS TN
2020-07-06 912-468 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J SAVANNAH GA
2020-07-06 984-985 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - NC 638E SELMA NC
2020-07-03 289-368 not yet reported which blocks → IXICA Communications Inc. 812H Brampton —
2020-07-03 437-325 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-07-03 437-389 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-07-03 437-390 not yet reported which blocks → Bell Mobility 6574 Toronto —
2020-07-02 209-504 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
2020-07-02 216-340 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 478J CLEVELAND OH
2020-07-02 216-758 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H INDEPNDNCE OH
2020-07-02 234-336 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H EPALESTINE OH
2020-07-02 240-240 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DAMASCS240 MD
2020-07-02 252-263 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AHOSKIE NC
2020-07-02 313-546 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E DETROITZN1 MI
2020-07-02 326-500 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H SUGRTRERDG OH
2020-07-02 341-200 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HRCUL-RODE CA
2020-07-02 346-946 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CYPRESS TX
2020-07-02 412-981 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN17 PA
2020-07-02 412-991 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN12 PA
2020-07-02 424-588 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H HAWTHORNE CA

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.