Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 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

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2016-10-18	249-203	not yet reported which blocks →	Bell Canada	8051	Sudbury	—
2016-10-18	249-228	not yet reported which blocks →	Bell Canada	8051	Huntsville	—
2016-10-18	249-317	not yet reported which blocks →	Bell Canada	8051	Parry Sound	—
2016-10-18	249-346	not yet reported which blocks →	Bell Canada	8051	Lindsay	—
2016-10-18	249-383	not yet reported which blocks →	Bell Canada	8051	Sault Ste. Marie	—
2016-10-18	249-746	not yet reported which blocks →	Bell Canada	8051	Gore Bay	—
2016-10-18	249-773	not yet reported which blocks →	Bell Canada	8051	Haliburton	—
2016-10-18	249-774	not yet reported which blocks →	Bell Canada	8051	North Bay	—
2016-10-18	249-901	not yet reported which blocks →	Bell Canada	8051	Peterborough	—
2016-10-18	249-938	not yet reported which blocks →	Bell Canada	8051	Barrie	—
2016-10-18	323-831	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	LSAN DA 05	CA
2016-10-18	386-309	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	BUNNELL	FL
2016-10-18	618-714	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks →	FRONTIER NORTH, INC. - IL	1036	MASCOUTAH	IL
2016-10-18	619-622	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	CHULAVISTA	CA
2016-10-18	682-375	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	ARLINGTON	TX
2016-10-18	737-401	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7138	AUSTIN	TX
2016-10-18	772-302	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	FORTPIERCE	FL
2016-10-18	786-438	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	KEYS	FL
2016-10-17	213-242	0–9 XXXwhole prefix which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	LSAN DA 01	CA
2016-10-17	213-310	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	LSAN DA 01	CA
2016-10-17	224-575	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	ELGIN	IL
2016-10-17	224-580	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	DESPLAINES	IL
2016-10-17	240-985	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	WILLIAMSPT	MD
2016-10-17	240-996	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BRUNSWICK	MD
2016-10-17	240-998	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	HANCOCK	MD
2016-10-17	312-766	0–9 XXXwhole prefix which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	CHICGOZN01	IL
2016-10-17	317-618	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	INDIANAPLS	IN
2016-10-17	405-493	0–9 XXXall 10 · 7 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	OKLA CITY	OK
2016-10-17	425-588	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	KIRKLAND	WA
2016-10-17	513-964	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF OHIO, LLC - OH	284F	CINCINNATI	OH
2016-10-17	516-636	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NASSAUZN09	NY
2016-10-17	539-205	2XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OK	5257	SPAVINAW	OK
2016-10-17	628-251	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SNFC CNTRL	CA
2016-10-17	628-256	0–9 XXXall 10 · 6 holders which blocks →	SONIC TELECOM, LLC - CA	433E	SNFC MT-EV	CA
2016-10-17	646-813	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	NWYRCYZN01	NY
2016-10-17	681-781	0–9 XXXall 10 · 3 holders which blocks →	WIDE VOICE, LLC - WV	729H	CHRLSTNZN1	WV
2016-10-17	682-718	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ARLINGTON	TX
2016-10-17	772-303	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	PTST LUCIE	FL
2016-10-17	812-982	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IN	4803	TENNYSON	IN
2016-10-17	920-283	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF WISCONSIN, LLC - WI	227F	GREEN BAY	WI
2016-10-14	262-351	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	KENOSHA	WI
2016-10-14	470-552	0–9 XXXwhole prefix which blocks →	PEERLESS NETWORK OF GEORGIA, LLC - GA	909E	ATLANTA	GA
2016-10-14	612-509	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF MINNESOTA, LLC - MN	107F	TWINCITIES	MN
2016-10-14	647-569	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2016-10-14	716-370	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	BUFFALO	NY
2016-10-14	720-543	0–9 XXXwhole prefix which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	DENVER	CO
2016-10-14	862-272	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	ORANGE	NJ
2016-10-14	873-254	not yet reported which blocks →	Bell Canada	8050	Ottawa-Hull	—
2016-10-14	873-272	not yet reported which blocks →	Bell Canada	8050	Ste-Agathe	—
2016-10-14	873-491	not yet reported which blocks →	Bell Canada	8050	Drummondville	—

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.