NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2021-11-10 213-601 0–9 XXXwhole prefix which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2021-11-10 213-641 0–9 XXXall 10 · 2 holders which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 13 CA
2021-11-10 385-503 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - UT 871E BOUNTIFUL UT
2021-11-10 424-463 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 INGLEWOOD CA
2021-11-10 480-846 0–9 XXXwhole prefix which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2021-11-10 520-590 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 BISBEE AZ
2021-11-10 540-304 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - VA 138E REMINGTON VA
2021-11-10 540-963 0XXX1XXX2XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - VA 138E TROUTVILLE VA
2021-11-10 548-477 not yet reported which blocks → IXICA Communications Inc. 812H Galt —
2021-11-10 548-510 not yet reported which blocks → IXICA Communications Inc. 812H Ayr —
2021-11-10 548-580 not yet reported which blocks → IXICA Communications Inc. 812H Elmira —
2021-11-10 548-708 not yet reported which blocks → Iristel Inc. 154E Windsor —
2021-11-10 548-709 not yet reported which blocks → Iristel Inc. 154E Windsor —
2021-11-10 616-362 0XXX1XXX2XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E MOLINE MI
2021-11-10 657-539 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2021-11-10 742-999 not yet reported which blocks → TELUS Mobility 8303 Hamilton —
2021-11-10 747-308 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BRBN BRBN CA
2021-11-10 757-734 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F NRFOLKZON2 VA
2021-11-10 951-594 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 MORENO CA
2021-11-10 980-361 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 CHARLOTTE NC
2021-11-09 209-865 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E GALT CA
2021-11-09 209-925 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C SNRA MAIN CA
2021-11-09 351-227 2XXX3XXX4XXX5XXX7XXX · 3 holders which blocks → ONVOY, LLC - MA 892D BOLTON MA
2021-11-09 352-739 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BUSHNELL FL
2021-11-09 352-769 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 DADE CITY FL
2021-11-09 413-456 6XXX7XXX which blocks → ONVOY, LLC - MA 892D SOUTHWICK MA
2021-11-09 431-946 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2021-11-09 440-768 0–9 XXXall 10 · 5 holders which blocks → AT&T - LOCAL 7421 WILLOUGHBY OH
2021-11-09 458-277 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → T-MOBILE USA, INC. 6529 NEWPORT OR
2021-11-09 458-278 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ALBANY OR
2021-11-09 463-260 0XXX1XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FAIRLAND IN
2021-11-09 464-200 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LANSING IL
2021-11-09 464-300 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H CICERO IL
2021-11-09 464-400 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BELLWOOD IL
2021-11-09 484-980 0XXX1XXX · 2 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J BIRDSBORO PA
2021-11-09 501-491 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - AR 196F BEEBE AR
2021-11-09 508-290 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E NORTHBORO MA
2021-11-09 513-935 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F BETHANY OH
2021-11-09 548-312 not yet reported which blocks → ISP Telecom Inc. 4727 New Hamburg —
2021-11-09 548-332 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Windsor —
2021-11-09 657-551 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 WESTMINSTR CA
2021-11-09 659-252 0–9 XXXall 10 · 7 holders which blocks → ONVOY SPECTRUM, LLC 624H CLANTON AL
2021-11-09 681-469 0XXX6XXX7XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F SHINNSTON WV
2021-11-09 716-554 0XXX2XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H RANDOLPH NY
2021-11-09 771-888 0–9 XXXall 10 · 6 holders which blocks → WIDE VOICE, LLC - DC 538H WSHNGTNZN1 DC
2021-11-09 782-556 not yet reported which blocks → Bell Mobility Aliant 329A Charlottetown —
2021-11-09 825-473 not yet reported which blocks → ISP Telecom Inc. 4727 Taber —
2021-11-09 928-933 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PINETOP AZ
2021-11-09 951-597 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CORONA CA
2021-11-09 970-896 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 STEAMBOSPG CO

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.