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
2012-05-01 941-777 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G MYAKKA FL
2012-04-30 209-272 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 MODESTO CA
2012-04-28 234-208 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K AKRON OH
2012-04-28 714-853 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 FULLERTON CA
2012-04-27 204-498 not yet reported which blocks → LES.NET (1996) Inc. 141F Selkirk —
2012-04-27 204-846 not yet reported which blocks → LES.NET (1996) Inc. 141F Steinbach —
2012-04-27 224-251 0–9 XXXall 10 · 4 holders which blocks → ILLINOIS BELL TEL CO 9329 SKOKIE IL
2012-04-27 267-272 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E QUAKERTOWN PA
2012-04-27 289-768 not yet reported which blocks → Iristel Inc. 154E Hamilton —
2012-04-27 289-769 not yet reported which blocks → Iristel Inc. 154E Hamilton —
2012-04-27 289-901 not yet reported which blocks → Iristel Inc. 154E Brampton —
2012-04-27 289-902 not yet reported which blocks → Iristel Inc. 154E Ancaster —
2012-04-27 289-906 not yet reported which blocks → Iristel Inc. 154E Bolton —
2012-04-27 470-325 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 ATLANTA NE GA
2012-04-27 770-299 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - GA 8392 ATLANTA NE GA
2012-04-27 832-649 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
2012-04-27 860-603 0–9 XXXall 10 · 8 holders which blocks → COMCAST IP PHONE, LLC 318J COLCHESTER CT
2012-04-27 912-777 0–9 XXXall 10 · 4 holders which blocks → SOUTH CAROLINA NET, INC. DBA SPIRIT TELECOM - GA 898E SAVANNAH GA
2012-04-26 204-599 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2012-04-26 226-647 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Kitchener-Waterloo —
2012-04-26 289-660 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Ajax-Pickering —
2012-04-26 587-955 not yet reported which blocks → TELUS 8084 Calgary —
2012-04-26 902-708 not yet reported which blocks → Iristel Inc. 154E Halifax —
2012-04-24 502-791 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 LOUISVILLE KY
2012-04-24 516-544 0–9 XXXall 10 · 6 holders which blocks → CSC VOICE, LLC 612K NASSAUZN06 NY
2012-04-24 516-597 0–9 XXXall 10 · 7 holders which blocks → CSC VOICE, LLC 612K NASSAUZN08 NY
2012-04-24 516-743 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NASSAUZN05 NY
2012-04-24 520-365 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 TUCSON AZ
2012-04-24 585-432 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E DANSVILLE NY
2012-04-24 607-888 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → FINGER LAKES TECHNOLOGIES GROUP, INC. - NY 629E NORWICH NY
2012-04-24 646-582 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NWYRCYZN01 NY
2012-04-24 754-202 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLLYWOOD FL
2012-04-23 404-436 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-04-23 540-356 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J HARTWOOD VA
2012-04-23 571-581 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSNGTNZN17 VA
2012-04-23 708-314 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2012-04-23 860-310 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J HARTFORD CT
2012-04-23 909-368 0–9 XXXall 10 · 4 holders which blocks → METROPCS NETWORKS, LLC 899D FONTANA CA
2012-04-20 204-813 not yet reported which blocks → Iristel Inc. 154E Winnipeg —
2012-04-20 224-215 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 WILMETTE IL
2012-04-20 289-934 not yet reported which blocks → TELUS Mobility 8303 Newmarket —
2012-04-20 506-804 not yet reported which blocks → Iristel Inc. 154E Moncton —
2012-04-20 506-805 not yet reported which blocks → Iristel Inc. 154E Moncton —
2012-04-20 506-806 not yet reported which blocks → Iristel Inc. 154E Moncton —
2012-04-20 506-807 not yet reported which blocks → Iristel Inc. 154E Moncton —
2012-04-20 604-352 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Vancouver —
2012-04-20 803-305 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F SUMTER SC
2012-04-20 902-706 not yet reported which blocks → Iristel Inc. 154E Halifax —
2012-04-20 902-707 not yet reported which blocks → Iristel Inc. 154E Halifax —
2012-04-19 289-940 not yet reported which blocks → Videotron Ltd. 787G Oakville —

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.