NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2012-05-23 709-395 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Bishop's Falls —
2012-05-23 720-666 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF COLORADO, LLC - CO 278F DENVER CO
2012-05-23 727-225 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEARWATER FL
2012-05-23 740-760 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F MARIETTA OH
2012-05-23 763-888 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF MINNESOTA, LLC - MN 107F MONTWAVE MN
2012-05-23 778-806 not yet reported which blocks → Fibernetics Corporation 464D Vancouver —
2012-05-23 781-666 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F SAUGUS MA
2012-05-23 832-706 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2012-05-23 857-999 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F CAMBRIDGE MA
2012-05-23 952-777 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF MINNESOTA, LLC - MN 107F NORWOOD MN
2012-05-22 202-888 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF THE DISTRICT OF COLUMBIA, DC 275F WSHNGTNZN1 DC
2012-05-22 302-304 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 WILMINGTON DE
2012-05-22 310-870 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2012-05-22 314-300 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF MISSOURI, LLC - MO 225F ST LOUIS MO
2012-05-22 404-750 0–9 XXXall 10 · 4 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-05-22 415-527 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 SNFC CNTRL CA
2012-05-22 478-352 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WARNERRBNS GA
2012-05-22 480-800 0–9 XXXall 10 · 8 holders which blocks → PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2012-05-22 484-523 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ALLENTOWN PA
2012-05-22 518-410 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2012-05-22 520-612 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F TUCSON AZ
2012-05-22 602-888 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2012-05-22 636-638 0–9 XXXall 10 · 7 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K FSSCRSTLCY MO
2012-05-22 651-333 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF MINNESOTA, LLC - MN 107F TWINCITIES MN
2012-05-22 832-701 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2012-05-22 901-352 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TN 4806 LAGRANGE TN
2012-05-22 980-314 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2012-05-22 980-777 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F CONCORD NC
2012-05-21 321-336 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G COCOABEACH FL
2012-05-21 415-535 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2012-05-21 518-440 0XXX2XXX4XXX7XXX · 4 holders which blocks → FIDIUM ENTERPRISE SERVICES, LLC 830G CHATHAM NY
2012-05-21 612-314 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2012-05-21 727-333 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G CLEARWATER FL
2012-05-21 727-888 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J TARPON SPG FL
2012-05-21 754-800 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G POMPANOBCH FL
2012-05-18 204-557 not yet reported which blocks → TELUS Mobility 8303 Winnipeg —
2012-05-18 204-558 not yet reported which blocks → TELUS Mobility 8303 Winnipeg —
2012-05-18 208-889 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - ID 808G COERDALENE ID
2012-05-18 218-460 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E MOOSE LAKE MN
2012-05-18 226-243 not yet reported which blocks → Iristel Inc. 154E Kitchener-Waterloo —
2012-05-18 289-608 not yet reported which blocks → Fibernetics Corporation 464D Ajax-Pickering —
2012-05-18 518-419 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
2012-05-18 579-914 not yet reported which blocks → Iristel Inc. 154E Terrebonne —
2012-05-18 587-288 not yet reported which blocks → Fibernetics Corporation 464D Calgary —
2012-05-18 587-450 not yet reported which blocks → Shaw Telecom Inc. 497E Fort McMurray —
2012-05-18 928-323 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 SOMERTON AZ
2012-05-17 208-917 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - ID 808G BOISE ID
2012-05-17 408-614 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CAMPBELL CA
2012-05-17 480-489 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2012-05-17 520-332 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 TUCSON AZ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.