NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
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
2016-03-11 343-780 not yet reported which blocks → Distributel 082E Orleans —
2016-03-11 343-781 not yet reported which blocks → Distributel 082E Osgoode —
2016-03-11 343-783 not yet reported which blocks → Distributel 082E Plantagenet —
2016-03-11 343-784 not yet reported which blocks → Distributel 082E Richmond —
2016-03-11 343-785 not yet reported which blocks → Distributel 082E Rockland —
2016-03-11 343-786 not yet reported which blocks → Distributel 082E Russell —
2016-03-11 343-787 not yet reported which blocks → Distributel 082E Winchester —
2016-03-11 346-907 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
2016-03-11 442-202 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 BRAWLEY CA
2016-03-11 469-306 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C DE SOTO TX
2016-03-11 469-421 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ALLEN TX
2016-03-11 469-860 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C CRANDALL TX
2016-03-11 513-974 0–9 XXXwhole prefix which blocks → OHIO BELL TEL CO 9321 MIDDLETOWN OH
2016-03-11 657-306 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WESTMINSTR CA
2016-03-11 707-229 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C TMCV SERN CA
2016-03-11 707-715 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C COBB MT CA
2016-03-11 731-309 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MILLEDGEVL TN
2016-03-11 731-315 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K ADAMSVILLE TN
2016-03-11 740-730 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C TORONTO OH
2016-03-11 765-204 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D KIRKLIN IN
2016-03-11 803-906 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E BEECH IS SC
2016-03-11 845-261 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC- NY 384C HIGHLAND NY
2016-03-11 864-428 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - SC 548E PELZER SC
2016-03-11 931-616 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TN 525E MANCHESTER TN
2016-03-11 937-871 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F DANVILLE OH
2016-03-11 971-812 0XXX1XXX2XXX3XXX7XXX8XXX · 2 holders which blocks → ELTOPIA COMMUNICATIONS LLC - OR 647F SCAPPOOSE OR
2016-03-11 978-519 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC. - MA 428H HAVERHILL MA
2016-03-10 202-804 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2016-03-10 206-460 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WA 483E DES MOINES WA
2016-03-10 206-472 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WA 483E SEATTLE WA
2016-03-10 206-485 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WA 006F SEATTLE WA
2016-03-10 206-929 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2016-03-10 253-285 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WA 483E AUBURN WA
2016-03-10 343-760 not yet reported which blocks → Distributel 082E Almonte —
2016-03-10 343-761 not yet reported which blocks → Distributel 082E Arnprior —
2016-03-10 343-762 not yet reported which blocks → Distributel 082E Bourget —
2016-03-10 343-763 not yet reported which blocks → Distributel 082E Carleton Place —
2016-03-10 343-764 not yet reported which blocks → Distributel 082E Carp —
2016-03-10 343-765 not yet reported which blocks → Distributel 082E Casselman —
2016-03-10 425-230 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2016-03-10 502-444 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF KENTUCKY, LLC - KY 035H NEWLIBERTY KY
2016-03-10 573-279 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MO 093F WELLSVILLE MO
2016-03-10 657-305 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2016-03-10 702-955 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2016-03-10 702-957 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NV 029F LAS VEGAS NV
2016-03-10 740-871 0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GNADENHTTN OH
2016-03-10 765-770 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F UPLAND IN
2016-03-10 804-315 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - VA 138E MCKENNEY VA
2016-03-09 209-945 0–9 XXXwhole prefix which blocks → UTILITY TELECOM GROUP, LLC - CA 9262 STOCKTON CA
2016-03-09 226-386 not yet reported which blocks → Bell Mobility 6574 London —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.