NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 21
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
2020-12-18 205-794 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → HARGRAY OF ALABAMA, INC. - AL 432J LINCOLN AL
2020-12-18 224-341 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 SKOKIE IL
2020-12-18 281-696 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2020-12-18 308-351 0–9 XXXall 10 · 3 holders which blocks → UNITED STATES CELLULAR - NE 6263 GOTHENBURG NE
2020-12-18 325-910 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - TX 903C BRADY TX
2020-12-18 346-910 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - TX 903C MONTBLVIEU TX
2020-12-18 365-776 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Waterdown —
2020-12-18 430-530 0XXX1XXX3XXX4XXX5XXX · 3 holders which blocks → ONVOY, LLC - TX 903C TENESSCLNY TX
2020-12-18 430-910 0XXX1XXX2XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C VANALSTYNE TX
2020-12-18 469-927 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 MCKINNEY TX
2020-12-18 470-672 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ROCKMART GA
2020-12-18 470-714 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2020-12-18 470-716 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2020-12-18 470-734 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NW GA
2020-12-18 479-429 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AR 348F HARTMAN AR
2020-12-18 479-470 0XXX1XXX2XXX4XXX5XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - AR 348F HECTOR AR
2020-12-18 479-472 2XXX3XXX4XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - AR 348F RATCLIFF AR
2020-12-18 479-473 2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - AR 348F SCRANTON AR
2020-12-18 479-475 4XXX5XXX7XXX · 2 holders which blocks → ONVOY, LLC - AR 348F SUBIACO AR
2020-12-18 479-679 4XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - AR 348F SALUS AR
2020-12-18 479-779 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - AR 348F OZARK AR
2020-12-18 480-673 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2020-12-18 579-559 not yet reported which blocks → Videotron Ltd. 328F Joliette —
2020-12-18 581-912 not yet reported which blocks → Bell Mobility 6574 Quebec —
2020-12-18 701-299 0–9 XXXall 10 · 5 holders which blocks → COMMIO, LLC 939H BISMARCK ND
2020-12-18 715-430 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → STRATUS NETWORKS 495J MENOMONIE WI
2020-12-18 774-665 0XXX2XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H NORTON MA
2020-12-18 806-836 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C STINNETT TX
2020-12-18 857-887 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H JAMAICA PL MA
2020-12-18 873-569 not yet reported which blocks → Videotron Ltd. 328F Ottawa-Hull —
2020-12-18 878-884 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E GREENSBURG PA
2020-12-18 913-394 0XXX which blocks → RAINBOW COMMUNICATIONS, LLC - KS 330D EFFINGHAM KS
2020-12-18 940-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C DECATUR TX
2020-12-18 947-232 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2020-12-17 229-464 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VALDOSTA GA
2020-12-17 229-473 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 THOMASVL GA
2020-12-17 249-636 not yet reported which blocks → Fibernetics Corporation 464D Warkworth —
2020-12-17 249-637 not yet reported which blocks → Fibernetics Corporation 464D Omemee —
2020-12-17 249-638 not yet reported which blocks → Fibernetics Corporation 464D Norwood —
2020-12-17 249-639 not yet reported which blocks → Fibernetics Corporation 464D Nephton —
2020-12-17 249-640 not yet reported which blocks → Fibernetics Corporation 464D Lakefield —
2020-12-17 249-641 not yet reported which blocks → Fibernetics Corporation 464D Havelock —
2020-12-17 249-642 not yet reported which blocks → Fibernetics Corporation 464D Hastings —
2020-12-17 249-643 not yet reported which blocks → Fibernetics Corporation 464D Burleigh Falls —
2020-12-17 249-644 not yet reported which blocks → Fibernetics Corporation 464D Buckhorn —
2020-12-17 249-645 not yet reported which blocks → Fibernetics Corporation 464D Bridgenorth —
2020-12-17 314-864 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 CREVECOEUR MO
2020-12-17 341-201 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H FRNK OLIVR CA
2020-12-17 343-877 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Kemptville —
2020-12-17 385-372 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 KAYSVILLE UT

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.