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
2021-01-08 862-357 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NJ 637C BLOOMFIELD NJ
2021-01-08 872-270 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC 224C CHICGOZN01 IL
2021-01-08 901-587 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TN 525E MEMPHIS TN
2021-01-08 903-992 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C CHANDLER TX
2021-01-08 903-995 1XXX2XXX3XXX5XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - TX 903C MURCHISON TX
2021-01-08 903-996 1XXX2XXX3XXX4XXX7XXX8XXX · 5 holders which blocks → ONVOY, LLC - TX 903C LEONARD TX
2021-01-08 903-997 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - TX 903C WHITEWRGHT TX
2021-01-08 929-562 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY
2021-01-08 929-563 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN05 NY
2021-01-08 929-569 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN08 NY
2021-01-08 936-308 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C DIBOLL TX
2021-01-08 940-296 2XXX3XXX which blocks → ONVOY, LLC - TX 903C PALO PINTO TX
2021-01-08 940-306 0XXX2XXX3XXX4XXX6XXX7XXX9XXX · 2 holders which blocks → ONVOY, LLC - TX 903C TIOGA TX
2021-01-08 956-613 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C ROMA TX
2021-01-08 989-557 2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C HIGGINS LK MI
2021-01-08 989-788 2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C SIXTYLAKES MI
2021-01-07 228-853 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J VANCLEAVE MS
2021-01-07 431-925 not yet reported which blocks → Fibernetics Corporation 464D Oakbank —
2021-01-07 437-285 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-01-07 437-639 not yet reported which blocks → Bell Mobility 6574 Toronto —
2021-01-07 438-418 not yet reported which blocks → Bell Mobility 6574 Montreal —
2021-01-07 438-565 not yet reported which blocks → Bell Mobility 6574 Montreal —
2021-01-07 575-248 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 HATCH NM
2021-01-07 575-550 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NM 206F ROSWELL NM
2021-01-07 659-218 0XXX1XXX2XXX3XXX5XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - AL 604E PENNINGTON AL
2021-01-07 659-227 0XXX1XXX2XXX3XXX7XXX · 4 holders which blocks → ONVOY, LLC - AL 604E BRILLIANT AL
2021-01-07 659-237 0XXX1XXX2XXX3XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - AL 604E CARROLLTON AL
2021-01-07 659-247 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 5 holders which blocks → ONVOY, LLC - AL 604E DOUBLE SPG AL
2021-01-07 659-257 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E HAMILTON AL
2021-01-07 659-277 0XXX1XXX2XXX3XXX7XXX9XXX · 5 holders which blocks → ONVOY, LLC - AL 604E PANOLA AL
2021-01-07 737-282 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C DALE/LTNSP TX
2021-01-07 769-377 0XXX2XXX3XXX6XXX7XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J EDWARDS MS
2021-01-07 825-540 not yet reported which blocks → Shaw Telecom Inc. 497E Calgary —
2021-01-07 838-331 2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → ONVOY, LLC- NY 384C FTCOVINGTN NY
2021-01-07 838-332 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C GLENSFALLS NY
2021-01-07 838-334 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC- NY 384C GREENWICH NY
2021-01-07 838-335 1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC- NY 384C HARTFORD NY
2021-01-07 838-380 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H LAKEGEORGE NY
2021-01-07 838-381 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C LAKEPLACID NY
2021-01-07 838-385 0XXX1XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H MINEVILLE NY
2021-01-07 838-387 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H MOIRA NY
2021-01-07 838-882 1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C OAK HILL NY
2021-01-07 838-884 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H PITTSTOWN NY
2021-01-07 906-301 0XXX2XXX3XXX4XXX7XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C MICHIGAMME MI
2021-01-06 220-272 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → ONVOY, LLC - OH 464C CROTON OH
2021-01-06 220-440 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C FRAZEYSBG OH
2021-01-06 251-337 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - AL 604E REPTON AL
2021-01-06 251-347 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AL 604E URIAH AL
2021-01-06 252-483 0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E SUNBURY NC
2021-01-06 380-280 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C GROVEPORT OH

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.