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
2012-03-12 206-209 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WA 483E SEATTLE WA
2012-03-12 216-209 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2012-03-12 234-205 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 AKRON OH
2012-03-12 404-565 0–9 XXXall 10 · 4 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-03-12 404-860 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-03-12 412-430 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E PTTSBGZON1 PA
2012-03-12 513-704 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 CINCINNATI OH
2012-03-12 517-258 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E HOWELL MI
2012-03-12 614-649 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 COLUMBUS OH
2012-03-12 717-208 0–9 XXXall 10 · 5 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LANCASTER PA
2012-03-12 740-562 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ZANESVILLE OH
2012-03-12 818-875 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SUNLD TJNG CA
2012-03-12 843-510 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 WALTERBORO SC
2012-03-12 859-303 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 LEXINGTON KY
2012-03-12 906-212 0–9 XXXall 10 · 7 holders which blocks → UPPER PENINSULA TELEPHONE COMPANY - MI 746G ESCANABA MI
2012-03-12 907-515 7XXX which blocks → GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION 6872 HAINES AK
2012-03-12 907-815 7XXX which blocks → GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION 6872 SKAGWAY AK
2012-03-12 937-204 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAYTON OH
2012-03-09 438-538 not yet reported which blocks → Fibernetics Corporation 464D Pointe-Claire —
2012-03-09 438-638 not yet reported which blocks → Fibernetics Corporation 464D Ile-Perrot —
2012-03-09 579-490 not yet reported which blocks → TELUS Mobility 8303 Vaudreuil —
2012-03-09 587-283 not yet reported which blocks → TELUS Mobility 8301 Gift Lake —
2012-03-09 604-372 not yet reported which blocks → Shaw Telecom Inc. 497E Cloverdale —
2012-03-09 631-480 0–9 XXXall 10 · 4 holders which blocks → TELENGY L.L.C. - NY 473G AMITYVILLE NY
2012-03-09 646-561 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN01 NY
2012-03-09 778-775 not yet reported which blocks → Fibernetics Corporation 464D Vancouver —
2012-03-09 819-282 not yet reported which blocks → Fibernetics Corporation 464D Ottawa-Hull —
2012-03-09 917-391 0–9 XXXall 10 · 5 holders which blocks → TELENGY L.L.C. - NY 473G NWYRCYZN08 NY
2012-03-09 929-223 0–9 XXXall 10 · 4 holders which blocks → TELENGY L.L.C. - NY 473G NWYRCYZN04 NY
2012-03-09 929-243 0–9 XXXall 10 · 5 holders which blocks → CSC VOICE, LLC 612K NWYRCYZN05 NY
2012-03-08 306-500 not yet reported which blocks → Iristel Inc. 154E Saskatoon —
2012-03-08 405-662 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 OKLA CITY OK
2012-03-08 581-643 not yet reported which blocks → Videotron Ltd. 8306 Chute-aux-Outardes —
2012-03-08 615-979 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 NASHVILLE TN
2012-03-08 615-999 0–9 XXXwhole prefix which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 NASHVILLE TN
2012-03-08 816-548 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANSASCITY MO
2012-03-08 857-248 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2012-03-08 857-260 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2012-03-08 865-210 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2012-03-08 901-208 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2012-03-08 918-889 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 TULSA OK
2012-03-07 405-763 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKLA CITY OK
2012-03-07 406-702 0–9 XXXall 10 · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K BILLINGS MT
2012-03-07 581-327 not yet reported which blocks → Videotron Ltd. 8306 Tadoussac —
2012-03-07 604-425 not yet reported which blocks → Distributel 081E Abbotsford —
2012-03-07 604-426 not yet reported which blocks → Distributel 081E Chilliwack —
2012-03-07 614-666 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F HILLIARD OH
2012-03-07 724-500 0XXX1XXX3XXX4XXX5XXX7XXX · 6 holders which blocks → WINDSTREAM PENNSYLVANIA, INC. 0176 NEWALXNDRI PA
2012-03-07 724-999 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → WINDSTREAM PENNSYLVANIA, INC. 0176 JAMESTOWN PA
2012-03-07 778-738 not yet reported which blocks → Distributel 081E Kelowna —

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.