NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2019-06-28 813-576 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TAMPANTH FL
2019-06-28 865-568 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - TN 525E BENTCREEK TN
2019-06-27 228-277 0–9 XXXall 10 · 5 holders which blocks → VOIP INNOVATIONS, LLC 597F GULFPORT MS
2019-06-27 239-291 0–9 XXXall 10 · 6 holders which blocks → EXIANT COMMUNICATIONS LLC 114J FORT MYERS FL
2019-06-27 248-873 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARMINGTON MI
2019-06-27 270-770 0–9 XXXall 10 · 3 holders which blocks → VOIP INNOVATIONS, LLC 597F BOWLNGGREN KY
2019-06-27 385-308 0–9 XXXall 10 · 5 holders which blocks → VOIP INNOVATIONS, LLC 597F MIDVALE UT
2019-06-27 385-432 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 OGDEN UT
2019-06-27 479-362 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 7277 BENTONVL AR
2019-06-27 681-275 0XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - WV 449F UNIONRIDGE WV
2019-06-27 681-281 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WV 449F MILTON WV
2019-06-27 681-308 0XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - WV 449F MATEWAN WV
2019-06-27 681-325 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - WV 449F BRANCHLAND WV
2019-06-27 681-366 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - WV 449F CHAPMANVL WV
2019-06-27 681-491 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WV 449F GILBERT WV
2019-06-27 912-431 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STATESBORO GA
2019-06-27 972-799 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2019-06-26 223-263 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 RED LION PA
2019-06-26 236-702 not yet reported which blocks → Iristel Inc. 154E Burns Lake —
2019-06-26 267-993 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2019-06-26 343-429 not yet reported which blocks → Iristel Inc. 154E Carleton Place —
2019-06-26 343-806 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2019-06-26 505-420 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H ALBUQURQUE NM
2019-06-26 573-813 0XXX1XXX3XXX4XXX6XXX8XXX9XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MO 6123 E PRAIRIE MO
2019-06-26 825-802 not yet reported which blocks → Iristel Inc. 154E Calgary —
2019-06-26 825-803 not yet reported which blocks → Iristel Inc. 154E Calgary —
2019-06-26 825-804 not yet reported which blocks → Iristel Inc. 154E Canmore —
2019-06-26 873-531 not yet reported which blocks → TELUS Quebec 2243 Arthabaska —
2019-06-26 873-742 not yet reported which blocks → Iristel Inc. 154E Buckingham —
2019-06-26 902-944 not yet reported which blocks → Iristel Inc. 154E Charlottetown —
2019-06-25 250-986 not yet reported which blocks → Videotron Ltd. 383F Victoria —
2019-06-25 302-867 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H WILMINGTON DE
2019-06-25 380-206 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 DUBLIN OH
2019-06-25 385-326 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 OGDEN UT
2019-06-25 480-572 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-06-25 531-625 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 SOSIOUX CY NE
2019-06-25 712-638 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STORM LAKE IA
2019-06-25 720-691 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2019-06-25 757-979 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 CRITTENDEN VA
2019-06-25 762-249 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E HEPHZIBAH GA
2019-06-25 825-502 not yet reported which blocks → Iristel Inc. 154E Brooks —
2019-06-25 825-561 not yet reported which blocks → Videotron Ltd. 787G Calgary —
2019-06-25 857-328 0–9 XXXall 10 · 3 holders which blocks → VOIP INNOVATIONS, LLC 597F BOSTON MA
2019-06-24 226-764 not yet reported which blocks → TELUS Integrated Communications 2782 Linwood —
2019-06-24 236-512 not yet reported which blocks → Videotron Ltd. 787G Vancouver —
2019-06-24 319-867 0–9 XXXall 10 · 7 holders which blocks → COMMIO, LLC 939H IOWA CITY IA
2019-06-24 365-259 not yet reported which blocks → TELUS Integrated Communications 2782 Palgrave —
2019-06-24 416-474 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2019-06-24 423-632 1XXX2XXX7XXX · 3 holders which blocks → TWIN LAKES COMMUNICATIONS, INC. - TN 204G WARTBURG TN
2019-06-24 559-379 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C LINDSAY CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.