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
2021-07-22 782-598 not yet reported which blocks → Fibernetics Corporation 464D Mount Uniacke —
2021-07-22 782-599 not yet reported which blocks → Fibernetics Corporation 464D Musquodoboit —
2021-07-22 782-600 not yet reported which blocks → Fibernetics Corporation 464D Musquodoboit Harbour —
2021-07-22 782-601 not yet reported which blocks → Fibernetics Corporation 464D New Germany —
2021-07-22 782-602 not yet reported which blocks → Fibernetics Corporation 464D New Ross —
2021-07-22 782-603 not yet reported which blocks → Fibernetics Corporation 464D Noel —
2021-07-22 786-772 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C MIAMI FL
2021-07-22 786-795 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MIAMI FL
2021-07-22 813-798 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E PLANT CITY FL
2021-07-22 858-323 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CHULAVISTA CA
2021-07-22 878-345 1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → FRACTEL, LLC 965H PTGSBNZN20 PA
2021-07-22 878-978 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E PTTSBGZON1 PA
2021-07-22 913-412 0XXX1XXX2XXX3XXX4XXX5XXX7XXX · 5 holders which blocks → ONVOY, LLC - KS 205F ELWOOD KS
2021-07-22 937-905 0XXX1XXX5XXX6XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C WMANSFIELD OH
2021-07-21 252-283 0XXX1XXX2XXX3XXX8XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E AURORA NC
2021-07-21 254-476 4XXX6XXX7XXX which blocks → ONVOY, LLC - TX 903C HEIDENHEMR TX
2021-07-21 272-269 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J WASHIGTNVL PA
2021-07-21 385-458 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 MORGAN UT
2021-07-21 386-296 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELNYX LLC 073H PIERSON FL
2021-07-21 435-308 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MONUMNTVLY UT
2021-07-21 445-213 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHLDLPHZN1 PA
2021-07-21 447-206 0XXX1XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC 224C COLUMBUS IL
2021-07-21 470-830 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2021-07-21 475-294 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CT 639C MILFORD CT
2021-07-21 551-324 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H WESTWOOD NJ
2021-07-21 561-690 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2021-07-21 616-324 0XXX1XXX2XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E CASNOVIA MI
2021-07-21 616-348 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CALEDONIA MI
2021-07-21 616-758 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H GRANDHAVEN MI
2021-07-21 689-245 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ORLANDO FL
2021-07-21 712-408 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NO HOPKINS IA
2021-07-21 802-312 0XXX1XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → ONVOY, LLC - VT 451F NORTHFIELD VT
2021-07-21 856-510 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H PITMAN NJ
2021-07-21 878-241 0XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F SMITHSFRRY PA
2021-07-21 936-317 0XXX3XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - TX 903C BEDIAS TX
2021-07-21 936-322 1XXX2XXX3XXX4XXX · 2 holders which blocks → ONVOY, LLC - TX 903C JOAQUIN TX
2021-07-21 936-766 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H CONROE TX
2021-07-21 971-403 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F ASTORIA OR
2021-07-20 209-930 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PLANADA CA
2021-07-20 223-264 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E EPHRATA PA
2021-07-20 231-385 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLCV - MI 543C CORAL MI
2021-07-20 234-304 0XXX1XXX2XXX3XXX4XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 HUDSON OH
2021-07-20 240-761 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAUREL236 MD
2021-07-20 240-769 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F KEEDYSVL MD
2021-07-20 240-785 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MD 071F OAKLAND MD
2021-07-20 269-305 0XXX2XXX3XXX5XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C PLAINWELL MI
2021-07-20 325-295 0XXX2XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - TX 903C MORAN TX
2021-07-20 331-270 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC 224C AURORA IL
2021-07-20 340-200 not yet reported which blocks → TELNYX LLC 073H CHTAMSTTHS VI
2021-07-20 346-483 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C APOLLO 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.