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
2014-02-18 929-282 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN08 NY
2014-02-18 929-293 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
2014-02-18 949-344 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 IRVINE CA
2014-02-17 281-906 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2014-02-17 304-786 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIPLEY WV
2014-02-17 423-607 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 LIMESTONE TN
2014-02-17 904-877 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J KINGSLEYLK FL
2014-02-17 929-267 0–9 XXXall 10 · 6 holders which blocks → YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN11 NY
2014-02-14 217-707 2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 TAYLORVL IL
2014-02-14 682-704 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ARLINGTON TX
2014-02-14 832-986 0–9 XXXall 10 · 2 holders which blocks → AT&T ENTERPRISES, LLC 516C HOUSTON TX
2014-02-14 929-445 0–9 XXXall 10 · 3 holders which blocks → BARR TELL USA, INC. - NY 525G NWYRCYZN03 NY
2014-02-13 386-866 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G PALATKA FL
2014-02-13 727-877 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E NWPTRICHEY FL
2014-02-13 904-844 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G FERNADNBCH FL
2014-02-13 939-539 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2014-02-12 248-206 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROYAL OAK MI
2014-02-12 249-218 not yet reported which blocks → TELUS Integrated Communications 2782 Bracebridge —
2014-02-12 249-219 not yet reported which blocks → TELUS Integrated Communications 2782 Parry Sound —
2014-02-12 616-227 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA MI
2014-02-12 719-281 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 PUEBLO CO
2014-02-12 873-357 not yet reported which blocks → Bell Mobility 6574 Waswanipi —
2014-02-12 873-937 not yet reported which blocks → Bell Mobility 6574 Matagami —
2014-02-12 910-932 2XXX3XXX5XXX · 2 holders which blocks → WINDSTREAM NORTH CAROLINA, INC. 0476 PINEBLUFF NC
2014-02-11 204-815 not yet reported which blocks → Distributel 081E Winnipeg —
2014-02-11 289-496 not yet reported which blocks → Distributel 082E Richmond Hill —
2014-02-11 343-344 not yet reported which blocks → Distributel 082E Kingston —
2014-02-11 438-788 not yet reported which blocks → Fibernetics Corporation 464D Montreal —
2014-02-11 518-930 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SCHENCTADY NY
2014-02-11 530-446 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → CSC VOICE, LLC 612K GRVY MAIN CA
2014-02-11 530-489 0–9 XXXall 10 · 5 holders which blocks → CSC VOICE, LLC 612K HOMEWOOD CA
2014-02-11 530-492 0–9 XXXall 10 · 6 holders which blocks → CSC VOICE, LLC 612K AUBN MAIN CA
2014-02-11 530-728 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → CSC VOICE, LLC 612K GRVY SOUTH CA
2014-02-11 647-313 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2014-02-11 707-607 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CSC VOICE, LLC 612K FERNDALE CA
2014-02-11 707-630 0–9 XXXall 10 · 5 holders which blocks → CSC VOICE, LLC 612K ARCATA CA
2014-02-11 707-686 0–9 XXXall 10 · 7 holders which blocks → CSC VOICE, LLC 612K LOLETA CA
2014-02-11 707-783 0–9 XXXall 10 · 7 holders which blocks → CSC VOICE, LLC 612K RIO DELL CA
2014-02-11 707-844 0–9 XXXall 10 · 7 holders which blocks → CSC VOICE, LLC 612K BLUE LAKE CA
2014-02-11 707-851 0–9 XXXall 10 · 8 holders which blocks → CSC VOICE, LLC 612K HYDESVILLE CA
2014-02-11 778-381 not yet reported which blocks → Fibernetics Corporation 464D Vancouver —
2014-02-10 225-442 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BATONROUGE LA
2014-02-10 228-346 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J GULFPORT MS
2014-02-10 251-308 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MOBILE AL
2014-02-10 406-688 6XXX8XXX9XXX · 2 holders which blocks → SAGEBRUSH CELLULAR, INC. 443B SCOBEY MT
2014-02-10 818-964 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E AGOURA CA
2014-02-10 850-812 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J FTWALTNBCH FL
2014-02-10 941-202 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VENICE FL
2014-02-07 214-971 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ENNIS TX
2014-02-07 321-877 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G COCOA FL

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.