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
2014-01-24 669-226 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SNJS NORTH CA
2014-01-24 681-236 0XXX1XXX2XXX5XXX8XXX9XXX · 4 holders which blocks → CSC VOICE, LLC 612K ELIZABETH WV
2014-01-24 681-416 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → CSC VOICE, LLC 612K DELBARTON WV
2014-01-24 714-804 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 BREA CA
2014-01-24 808-724 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
2014-01-24 818-796 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 VAN NUYS CA
2014-01-24 818-927 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2014-01-24 832-672 0–9 XXXall 10 · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C HSTNSUBURB TX
2014-01-24 832-679 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7239 HSTNSUBURB TX
2014-01-23 224-706 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E LAKEFOREST IL
2014-01-23 725-444 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEVADA, LLC - NV 408F JEAN NV
2014-01-23 725-999 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEVADA, LLC - NV 408F NELSON NV
2014-01-23 904-702 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 JACKSONVL FL
2014-01-22 205-773 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 LEEDS AL
2014-01-22 681-217 0–9 XXXall 10 · 6 holders which blocks → CSC VOICE, LLC 612K CHRLSTNZN6 WV
2014-01-22 713-597 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C HOUSTON TX
2014-01-21 228-351 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 4886 GULFPORT MS
2014-01-21 469-702 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J LEWISVILLE TX
2014-01-21 601-882 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MS 4886 JACKSON MS
2014-01-21 636-888 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF MISSOURI, LLC - MO 225F ST CLAIR MO
2014-01-21 713-325 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2014-01-20 234-254 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F YOUNGSTOWN OH
2014-01-20 516-253 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN02 NY
2014-01-20 929-260 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN10 NY
2014-01-17 209-294 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LODI CA
2014-01-17 305-998 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E KEYS FL
2014-01-17 443-776 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F ELKRIDGE MD
2014-01-17 516-254 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2014-01-17 520-428 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TUCSON AZ
2014-01-17 540-388 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J CHANCELLOR VA
2014-01-17 587-476 not yet reported which blocks → TELUS 8084 Calgary —
2014-01-17 646-791 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 551G NWYRCYZN01 NY
2014-01-17 646-793 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2014-01-17 703-479 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 MANASSAS VA
2014-01-17 804-299 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J ASHLAND VA
2014-01-17 832-840 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2014-01-17 864-802 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREER SC
2014-01-17 901-421 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MEMPHIS TN
2014-01-17 901-453 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MEMPHIS TN
2014-01-16 234-706 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J AKRON OH
2014-01-16 346-444 0–9 XXXall 10 · 4 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D HOUSTON TX
2014-01-16 346-999 0–9 XXXall 10 · 5 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D HUFFMAN TX
2014-01-16 352-866 0XXX6XXX7XXX8XXX · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J WALDO FL
2014-01-16 872-704 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2014-01-16 954-870 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FTLAUDERDL FL
2014-01-15 214-238 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K DALLAS TX
2014-01-15 226-549 not yet reported which blocks → Execulink Telecom Inc. 8226 Delhi —
2014-01-15 346-222 0–9 XXXall 10 · 6 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D LA PORTE TX
2014-01-15 346-333 0–9 XXXall 10 · 4 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D LANGHAMCRK TX
2014-01-15 346-777 0–9 XXXall 10 · 2 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D BAMMEL TX

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.