NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2020-12-23 239-510 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C LEHIGHACRS FL
2020-12-23 240-748 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 WSHNGTNZN3 MD
2020-12-23 249-722 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Huntsville —
2020-12-23 321-410 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - FL 937C COCOA FL
2020-12-23 321-510 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C EAU GALLIE FL
2020-12-23 334-771 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 5 holders which blocks → ONVOY, LLC - AL 604E FORESTHOME AL
2020-12-23 352-691 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C BROOKSVL FL
2020-12-23 352-714 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - FL 937C MELROSE FL
2020-12-23 352-715 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C TRENTON FL
2020-12-23 352-716 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - FL 937C YANKEETOWN FL
2020-12-23 352-833 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C CLERMONT FL
2020-12-23 367-995 not yet reported which blocks → TELUS Mobility 8303 Quebec —
2020-12-23 385-378 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MURRAY UT
2020-12-23 386-289 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C ALACHUA FL
2020-12-23 386-486 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - FL 937C WHITE SPG FL
2020-12-23 386-686 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - FL 937C FORT WHITE FL
2020-12-23 437-783 not yet reported which blocks → TELUS Integrated Communications 2782 Toronto —
2020-12-23 470-759 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 ATLANTA SO GA
2020-12-23 478-466 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - GA 067D MILLEN GA
2020-12-23 520-506 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AZ 630E TOMBSTONE AZ
2020-12-23 520-532 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AZ 630E CASAGRANDE AZ
2020-12-23 520-637 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2020-12-23 567-346 0XXX1XXX2XXX3XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F MARENGO OH
2020-12-23 575-249 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NM 123F LAS CRUCES NM
2020-12-23 585-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C ROCHESTER NY
2020-12-23 657-474 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANAHEIM CA
2020-12-23 657-480 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANAHEIM CA
2020-12-23 672-288 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 100 Mile House —
2020-12-23 672-981 not yet reported which blocks → TELUS Mobility 8301 Sechelt —
2020-12-23 725-567 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MTCHARLETN NV
2020-12-23 775-566 0XXX1XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H GOLDFIELD NV
2020-12-23 775-899 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H RENO NV
2020-12-23 775-922 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H SPVLYCHCRK NV
2020-12-23 775-946 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SCHURZ NV
2020-12-23 803-965 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - SC 548E CLOVER SC
2020-12-23 840-777 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J POMONA CA
2020-12-23 840-888 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J REDLANDS CA
2020-12-23 840-999 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J UPLAND CA
2020-12-23 854-877 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - SC 548E ROWLAND SC
2020-12-23 863-349 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - FL 937C BARTOW FL
2020-12-23 864-767 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → ONVOY, LLC - SC 548E ANTIOCH SC
2020-12-23 904-605 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C BALDWIN FL
2020-12-23 904-809 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C HASTINGS FL
2020-12-23 904-913 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C PNTVDRABCH FL
2020-12-23 904-915 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C YULEE FL
2020-12-23 912-788 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - GA 067D VIDALIA GA
2020-12-23 912-866 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - GA 067D HAZLEHURST GA
2020-12-23 912-887 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - GA 067D FARGO GA
2020-12-23 928-397 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - AZ 630E CASTLEROCK AZ
2020-12-23 928-416 0XXX1XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H MEADVIEW AZ

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.