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
2021-06-14 220-299 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H NEWCOMRSTN OH
2021-06-14 220-399 0XXX1XXX6XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H NELSONVL OH
2021-06-14 220-788 0XXX1XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H NEWHOLLAND OH
2021-06-14 220-977 0XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H PLEASANTVL OH
2021-06-14 225-453 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F DENHAM SPG LA
2021-06-14 351-223 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MA 892D BEVERLY MA
2021-06-14 351-252 1XXX2XXX3XXX5XXX6XXX · 3 holders which blocks → ONVOY, LLC - MA 892D ROWLEY MA
2021-06-14 380-227 0–9 XXXall 10 · 7 holders which blocks → VISION CTS, LLC 125J WORTHINGTN OH
2021-06-14 380-228 0–9 XXXall 10 · 6 holders which blocks → VISION CTS, LLC 125J CANALWHSTR OH
2021-06-14 470-816 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA GA
2021-06-14 480-790 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-06-14 765-706 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → ONVOY, LLC - IN 097D ROACHDALE IN
2021-06-14 774-483 3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MA 892D CATAUMET MA
2021-06-14 774-485 2XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MA 892D NANTUCKET MA
2021-06-14 857-374 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MA 892D QUINCY MA
2021-06-14 857-375 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MA 892D DORCHESTER MA
2021-06-14 857-382 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MA 892D EASTBOSTON MA
2021-06-14 857-392 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MA 892D JAMAICA PL MA
2021-06-14 857-422 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MA 892D SO BOSTON MA
2021-06-14 914-446 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN01 NY
2021-06-14 929-585 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN07 NY
2021-06-14 930-239 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D SELLERSBG IN
2021-06-14 930-240 0XXX1XXX2XXX4XXX · 4 holders which blocks → TELNYX LLC 073H CROTHERSVL IN
2021-06-11 213-558 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2021-06-11 220-348 0XXX2XXX6XXX · 3 holders which blocks → FRACTEL, LLC 965H ADAMSVILLE OH
2021-06-11 220-386 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CHESAPEAKE OH
2021-06-11 220-432 0XXX1XXX7XXX8XXX · 3 holders which blocks → FRACTEL, LLC 965H FULTONHAM OH
2021-06-11 220-499 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MARIETTA OH
2021-06-11 220-599 0XXX1XXX5XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H LAURELVL OH
2021-06-11 220-667 0XXX1XXX2XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BARNESVL OH
2021-06-11 220-699 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H IDAHO OH
2021-06-11 220-732 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ATHENS OH
2021-06-11 220-786 0XXX1XXX6XXX7XXX · 4 holders which blocks → FRACTEL, LLC 965H CROOKSVL OH
2021-06-11 220-799 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H GUYAN OH
2021-06-11 220-899 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H GRAYSVILLE OH
2021-06-11 220-946 0XXX1XXX3XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H COOPERDALE OH
2021-06-11 223-261 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 LOYSVILLE PA
2021-06-11 223-278 0–9 XXXall 10 · 3 holders which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2021-06-11 236-509 not yet reported which blocks → Videotron Ltd. 787G Vancouver —
2021-06-11 260-287 0XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - IN 097D BERNE IN
2021-06-11 339-232 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - MA 892D DUXBURY MA
2021-06-11 405-953 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J OKLA CITY OK
2021-06-11 414-293 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2021-06-11 445-208 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2021-06-11 463-252 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D ZIONSVILLE IN
2021-06-11 463-257 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D SHERIDAN IN
2021-06-11 548-531 not yet reported which blocks → Fibernetics Corporation 464D Fingal —
2021-06-11 605-416 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2021-06-11 605-812 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J SIOUX FLS SD
2021-06-11 667-325 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 GLENBURNIE MD

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.