NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2012-08-15 832-406 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2012-08-15 832-716 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2012-08-14 218-877 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MN 184D GRANDMRAIS MN
2012-08-14 226-379 not yet reported which blocks → Bell Mobility 6574 Owen Sound —
2012-08-14 310-879 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2012-08-14 450-363 not yet reported which blocks → Zayo Canada Inc. 8304 Boucherville —
2012-08-14 450-457 not yet reported which blocks → Zayo Canada Inc. 8304 St-Bruno —
2012-08-14 579-274 not yet reported which blocks → Zayo Canada Inc. 8304 Longueuil —
2012-08-14 579-275 not yet reported which blocks → Zayo Canada Inc. 8304 Ste-Therese —
2012-08-14 604-342 not yet reported which blocks → Zayo Canada Inc. 8304 Port Coquitlam —
2012-08-14 786-508 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E NORTH DADE FL
2012-08-14 954-507 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E CORAL SPG FL
2012-08-13 305-203 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E KEYS FL
2012-08-13 310-299 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2012-08-13 310-730 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CULVERCITY CA
2012-08-13 323-480 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MONTEBELLO CA
2012-08-13 336-582 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2012-08-13 404-490 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-08-13 415-697 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC CNTRL CA
2012-08-13 470-205 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E COVINGTON GA
2012-08-13 480-737 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2012-08-13 520-422 0–9 XXXall 10 · 5 holders which blocks → AT&T - LOCAL 7421 BISBEE AZ
2012-08-13 561-303 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2012-08-13 571-398 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 OCCOQUAN VA
2012-08-13 707-724 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VACAVILLE CA
2012-08-13 774-308 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARLBORO MA
2012-08-13 864-401 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2012-08-13 949-381 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 IRVINE CA
2012-08-13 971-281 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OR 750E NEWBERG OR
2012-08-10 224-256 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ALGONQUIN IL
2012-08-10 440-407 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHAGRINFLS OH
2012-08-10 601-541 0–9 XXXall 10 · 3 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 FOREST MS
2012-08-10 614-712 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GROVEPORT OH
2012-08-10 740-731 0–9 XXXall 10 · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 ATHENS OH
2012-08-10 819-720 not yet reported which blocks → TELUS Quebec 2243 Wakefield —
2012-08-09 204-709 not yet reported which blocks → Westman Media Cooperative Ltd 120F Souris —
2012-08-09 405-403 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
2012-08-09 513-801 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2012-08-09 614-788 0–9 XXXwhole prefix which blocks → OHIO BELL TEL CO 9321 COLUMBUS OH
2012-08-09 647-527 not yet reported which blocks → Bell Mobility 6574 Toronto —
2012-08-09 702-600 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV 6458 LAS VEGAS NV
2012-08-09 706-701 0–9 XXXall 10 · 8 holders which blocks → DOVETEL COMMUNICATIONS, LLC - GA 362B DAHLONEGA GA
2012-08-08 207-520 0–9 XXXall 10 · 4 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 LEWISTON ME
2012-08-08 226-402 not yet reported which blocks → Bell Mobility 6574 Sarnia —
2012-08-08 310-596 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CULVERCITY CA
2012-08-08 570-671 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T - LOCAL 7421 SHENANDOAH PA
2012-08-08 705-917 not yet reported which blocks → Bell Mobility 6574 Peterborough —
2012-08-08 706-898 0–9 XXXall 10 · 5 holders which blocks → TRUVISTA COMMUNICATIONS OF GEORGIA, LLC - GA 847G TOCCOA GA
2012-08-08 774-205 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SAGAMORE MA
2012-08-08 814-554 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T - LOCAL 7421 HOLLIDYSBG PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.