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
2012-05-29 210-540 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-05-29 226-675 not yet reported which blocks → Managed Network Systems Inc. 2776 La Salle —
2012-05-29 226-676 not yet reported which blocks → Managed Network Systems Inc. 2776 Tecumseh —
2012-05-29 320-318 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E RUSH CITY MN
2012-05-29 385-374 0–9 XXXall 10 · 6 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 LEHI UT
2012-05-29 438-931 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2012-05-29 470-203 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E LUTHERSVL GA
2012-05-29 647-657 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2012-05-29 682-209 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2012-05-29 832-707 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2012-05-29 832-712 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2012-05-29 862-419 0–9 XXXall 10 · 8 holders which blocks → CSC VOICE, LLC 612K SUCCASUNNA NJ
2012-05-25 226-306 not yet reported which blocks → TELUS Integrated Communications 2782 Listowel —
2012-05-25 289-995 not yet reported which blocks → TELUS Mobility 8303 Aurora —
2012-05-25 415-463 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC MT-EV CA
2012-05-25 450-636 not yet reported which blocks → Videotron Ltd. 8306 Hemmingford —
2012-05-25 450-637 not yet reported which blocks → Videotron Ltd. 8306 St-Chrysostome —
2012-05-25 450-843 not yet reported which blocks → Videotron Ltd. 8306 Ormstown —
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 —

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.