Recent prefix assignments

341 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 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

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2013-06-06	513-495	0–9 XXXwhole prefix which blocks →	CINCINNATI BELL	9348	CLERMONT	OH
2013-06-06	740-916	5XXX7XXX8XXX · 3 holders which blocks →	WINDSTREAM WESTERN RESERVE, INC.	0666	FAIRVIEW	OH
2013-06-06	813-808	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TAMPAEST	FL
2013-06-06	818-697	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	RESEDA	CA
2013-06-05	740-785	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LANCASTER	OH
2013-06-04	219-802	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	HAMMOND	IN
2013-06-04	219-804	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	E CHICAGO	IN
2013-06-04	224-813	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	DEERFIELD	IL
2013-06-04	431-234	not yet reported which blocks →	MTS Inc.	991B	Killarney	—
2013-06-04	431-235	not yet reported which blocks →	MTS Inc.	991B	Hamiota	—
2013-06-04	431-236	not yet reported which blocks →	MTS Inc.	991B	Deloraine	—
2013-06-04	506-996	not yet reported which blocks →	Fido Solutions Inc.	8820	Edmundston	—
2013-06-04	587-613	not yet reported which blocks →	TELUS	8084	Brooks	—
2013-06-04	587-614	not yet reported which blocks →	TELUS	8084	Camrose	—
2013-06-04	587-615	not yet reported which blocks →	TELUS	8084	Edson	—
2013-06-04	587-616	not yet reported which blocks →	TELUS	8084	Vegreville	—
2013-06-04	701-418	not yet reported which blocks →	SRT COMMUNICATIONS, INC.	3303	MINOT	ND
2013-06-04	712-422	0XXX1XXX2XXX3XXX4XXX5XXX7XXX · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	HAWARDEN	IA
2013-06-04	832-929	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2013-06-04	832-973	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2013-06-04	980-834	0–9 XXXwhole prefix which blocks →	WINDSTREAM COMMUNICATIONS, INC. - NC	7970	GASTONIA	NC
2013-06-03	234-801	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	NEWPHLDLPH	OH
2013-06-03	234-802	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	MEDINA	OH
2013-06-03	234-805	0–9 XXXall 10 · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LOWELLVL	OH
2013-06-03	234-806	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	WARREN	OH
2013-06-03	234-808	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	NORTHFIELD	OH
2013-06-03	510-680	0–9 XXXall 10 · 7 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	RICHMOND	CA
2013-06-03	567-805	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	NORWALK	OH
2013-06-03	740-914	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	MARION	OH
2013-06-03	740-915	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	NEWARK	OH
2013-06-03	872-239	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN06	IL
2013-06-03	929-241	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN03	NY
2013-06-03	929-245	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN07	NY
2013-06-03	929-272	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN06	NY
2013-06-03	937-805	0XXX4XXX9XXX · 2 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	WILMINGTON	OH
2013-06-03	937-808	0XXX4XXX5XXX7XXX · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	GREENVILLE	OH
2013-06-03	949-396	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	IRVINE	CA
2013-05-31	208-400	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ID	6565	OROFINO	ID
2013-05-31	226-275	not yet reported which blocks →	Gosfield North Communication Co-operative Ltd.	117H	Woodslee	—
2013-05-31	226-375	not yet reported which blocks →	Gosfield North Communication Co-operative Ltd.	117H	Pleasant Park	—
2013-05-31	337-221	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	DE RIDDER	LA
2013-05-31	424-322	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	SNMN SNMN	CA
2013-05-31	431-432	not yet reported which blocks →	RFNow Inc.	346G	Brandon	—
2013-05-31	431-433	not yet reported which blocks →	RFNow Inc.	346G	Winnipeg	—
2013-05-31	431-645	not yet reported which blocks →	RFNow Inc.	346G	Virden	—
2013-05-31	484-447	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	POTTSTOWN	PA
2013-05-31	512-621	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	AUSTIN	TX
2013-05-31	682-226	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	ARLINGTON	TX
2013-05-31	702-623	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - NV	075F	LAS VEGAS	NV
2013-05-31	860-850	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CT	199F	NIANTIC	CT

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.