NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

372 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 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-07-24 210-742 0–9 XXXall 10 · 3 holders which blocks → AIRESPRING, INC. 996H SANANTONIO TX
2018-07-24 346-353 0–9 XXXall 10 · 4 holders which blocks → AIRESPRING, INC. 996H HOUSTON TX
2018-07-24 458-658 0–9 XXXall 10 · 5 holders which blocks → INTEGRATED PATH COMMUNICATIONS-OREGON, LLC - OR 826H MEDFORD OR
2018-07-24 469-496 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEWISVILLE TX
2018-07-24 501-274 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H LITTLEROCK AR
2018-07-24 608-597 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C MCFARLAND WI
2018-07-24 850-761 0XXX1XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WALNUTHILL FL
2018-07-24 939-237 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2018-07-24 939-293 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2018-07-23 205-768 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H BIRMINGHAM AL
2018-07-23 224-292 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUNDELEIN IL
2018-07-23 226-562 not yet reported which blocks → Bragg Communications Inc. 4878 Port Rowan —
2018-07-23 272-218 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E NORTHUBRLD PA
2018-07-23 318-684 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 SHREVEPORT LA
2018-07-23 319-280 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 KEOSAUQUA IA
2018-07-23 343-451 not yet reported which blocks → TELUS Integrated Communications 2782 Ottawa-Hull —
2018-07-23 343-452 not yet reported which blocks → TELUS Integrated Communications 2782 Ottawa-Hull —
2018-07-23 346-356 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX
2018-07-23 386-242 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JENNINGS FL
2018-07-23 386-245 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WELLBORN FL
2018-07-23 431-894 not yet reported which blocks → Westman Media Cooperative Ltd 120F Gladstone —
2018-07-23 469-495 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 FRISCO TX
2018-07-23 475-250 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NORWALK CT
2018-07-23 507-618 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 FAIRMONT MN
2018-07-23 581-558 not yet reported which blocks → Videotron Ltd. 8306 Sainte-Thecle —
2018-07-23 585-439 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HENRIETTA NY
2018-07-23 608-470 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C EDGERTON WI
2018-07-23 873-484 not yet reported which blocks → TELUS Quebec 2243 Ottawa-Hull —
2018-07-23 954-645 0–9 XXXall 10 · 4 holders which blocks → AIRESPRING, INC. 996H DEERFLDBCH FL
2018-07-20 470-980 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA 7435 SENOIA GA
2018-07-20 859-712 2XXX3XXX4XXX5XXX6XXX which blocks → ONVOY, LLC - KY 896E DANVILLE KY
2018-07-19 231-289 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E CHARLEVOIX MI
2018-07-19 343-549 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2018-07-19 343-550 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2018-07-19 346-350 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SUGAR LAND TX
2018-07-19 365-323 not yet reported which blocks → Bell Mobility 6574 Hamilton —
2018-07-19 509-400 0XXX1XXX2XXX4XXX5XXX6XXX · 3 holders which blocks → UNITED STATES CELLULAR - WA 6270 MATTAWA WA
2018-07-19 587-935 not yet reported which blocks → Bell Mobility 6574 Calgary —
2018-07-19 647-312 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-07-19 647-322 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-07-19 757-906 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F TOANO VA
2018-07-19 772-277 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C SEBASTIAN FL
2018-07-19 873-354 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2018-07-19 904-914 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C JACKSONVL FL
2018-07-19 910-421 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E SWANSBORO NC
2018-07-19 910-951 0–9 XXXwhole prefix which blocks → BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 FAYETTEVL NC
2018-07-19 939-236 0XXX2XXX3XXX6XXX8XXX · 5 holders which blocks → LUMEN TECHNOLOGIES PUERTO RICO, LLC 091J RIOPIEDRAS PR
2018-07-19 954-953 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C POMPANOBCH FL
2018-07-18 236-464 not yet reported which blocks → Bell Mobility 6574 Victoria —
2018-07-18 438-335 not yet reported which blocks → Bell Mobility 6574 Montreal —

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.