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
2012-10-15 805-623 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTAMARIA CA
2012-10-15 873-888 not yet reported which blocks → Fibernetics Corporation 464D Sherbrooke —
2012-10-15 873-889 not yet reported which blocks → Fibernetics Corporation 464D Lac-Megantic —
2012-10-15 919-307 0–9 XXXall 10 · 4 holders which blocks → FRONTIER COMMUNICATIONS OF AMERICA, INC. - NC 440G RALEIGH NC
2012-10-12 206-735 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2012-10-12 412-529 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2012-10-12 412-738 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2012-10-12 571-982 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 WSNGTNZN08 VA
2012-10-12 579-880 not yet reported which blocks → Fibernetics Corporation 464D St-Lambert —
2012-10-12 579-882 not yet reported which blocks → Fibernetics Corporation 464D Boucherville —
2012-10-12 579-883 not yet reported which blocks → Fibernetics Corporation 464D Beloeil —
2012-10-12 579-885 not yet reported which blocks → Fibernetics Corporation 464D Chambly —
2012-10-12 579-886 not yet reported which blocks → Fibernetics Corporation 464D Laprairie —
2012-10-12 608-709 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 TELECOM OF WISCONSIN, LP - WI 7322 MADISON WI
2012-10-11 289-834 not yet reported which blocks → Bell Mobility 6574 Oakville —
2012-10-11 301-612 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MD 7325 WSNG238Z14 MD
2012-10-11 469-404 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2012-10-11 562-473 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LONG BEACH CA
2012-10-11 646-612 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-10-11 646-656 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-10-11 647-529 not yet reported which blocks → Bell Mobility 6574 Toronto —
2012-10-11 902-774 not yet reported which blocks → Bell Mobility Aliant 329A Yarmouth —
2012-10-11 917-634 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NWYRCYZN04 NY
2012-10-11 917-935 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN08 NY
2012-10-11 917-993 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN04 NY
2012-10-11 918-980 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G HARTSHORNE OK
2012-10-10 214-984 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANDPRARI TX
2012-10-10 219-307 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 VALPARAISO IN
2012-10-10 512-720 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2012-10-10 612-666 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2012-10-10 803-504 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ROCK HILL SC
2012-10-10 817-818 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 WEATHERFD TX
2012-10-10 832-727 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2012-10-10 832-732 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CYPRESS TX
2012-10-09 206-557 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SEATTLE WA
2012-10-09 310-627 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CMTN CMTN CA
2012-10-09 336-929 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2012-10-09 336-938 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2012-10-09 404-820 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-10-09 412-713 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2012-10-09 415-654 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 SNFC CNTRL CA
2012-10-09 480-448 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2012-10-09 706-927 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E EATONTON GA
2012-10-09 707-868 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F TOMALES CA
2012-10-09 760-441 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BRSW YERM CA
2012-10-09 770-212 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2012-10-09 828-620 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ASHEVILLE NC
2012-10-09 971-305 7XXX which blocks → COMCAST IP PHONE, LLC 318J MONITOR OR
2012-10-08 260-214 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 LAGRANGE IN
2012-10-08 404-500 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D ATLANTA GA

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.