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
2012-05-25 450-957 not yet reported which blocks → Videotron Ltd. 8306 Huntingdon —
2012-05-25 502-654 0–9 XXXall 10 · 4 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C LOUISVILLE KY
2012-05-25 607-203 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E BINGHAMTON NY
2012-05-25 706-670 0–9 XXXall 10 · 4 holders which blocks → RTC SOLUTIONS, INC. - GA 271E LA FAYETTE GA
2012-05-25 778-489 not yet reported which blocks → Shaw Telecom Inc. 497E Salmon Arm —
2012-05-25 778-490 not yet reported which blocks → Shaw Telecom Inc. 497E Sorrento —
2012-05-25 859-237 0–9 XXXall 10 · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 BEREA KY
2012-05-24 216-205 0–9 XXXall 10 · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CLEVELAND OH
2012-05-24 423-518 0–9 XXXall 10 · 6 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ELIZABTHTN TN
2012-05-24 469-708 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C DALLAS TX
2012-05-24 615-605 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 MURFREESBO TN
2012-05-24 832-708 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C HOUSTON TX
2012-05-24 862-505 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 CALDWELL NJ
2012-05-24 971-717 0–9 XXXall 10 · 4 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 PORTLAND OR
2012-05-23 207-507 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K RUMFORD ME
2012-05-23 267-634 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2012-05-23 289-505 not yet reported which blocks → Fibernetics Corporation 464D Brampton —
2012-05-23 314-666 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF MISSOURI, LLC - MO 225F LADUE MO
2012-05-23 352-515 0–9 XXXall 10 · 4 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L WEEKICHSPG FL
2012-05-23 401-408 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - RI 6389 PROVIDENCE RI
2012-05-23 443-666 0–9 XXXall 10 · 9 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MD 6119 CHESTERTN MD
2012-05-23 443-900 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 TOWSON MD
2012-05-23 469-317 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K DALLAS TX
2012-05-23 612-888 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF MINNESOTA, LLC - MN 107F TWINCITIES MN
2012-05-23 623-888 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2012-05-23 647-875 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2012-05-23 667-330 0XXX1XXX3XXX4XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J SALISBURY MD
2012-05-23 702-802 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LAS VEGAS NV
2012-05-23 706-924 0XXX1XXX2XXX6XXX7XXX8XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J CHICKAMAGA GA
2012-05-23 709-381 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Gander —
2012-05-23 709-389 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Botwood —
2012-05-23 709-393 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Grand Falls —
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

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.