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
2013-01-28	440-615	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CHAGRINFLS	OH
2013-01-28	440-618	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BRECKSVL	OH
2013-01-28	440-619	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BRECKSVL	OH
2013-01-28	440-651	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CHAGRINFLS	OH
2013-01-28	440-712	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BRECKSVL	OH
2013-01-28	440-770	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BRECKSVL	OH
2013-01-28	440-802	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BRECKSVL	OH
2013-01-28	440-806	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	CHAGRINFLS	OH
2013-01-28	587-944	not yet reported which blocks →	Bell Mobility	6574	Calgary	—
2013-01-28	614-393	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	GROVEPORT	OH
2013-01-28	614-709	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	GROVEPORT	OH
2013-01-28	682-582	0–9 XXXall 10 · 3 holders which blocks →	SOUTHWESTERN BELL	9533	WEATHERFD	TX
2013-01-28	720-360	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DENVER	CO
2013-01-28	919-670	0–9 XXXall 10 · 3 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	RALEIGH	NC
2013-01-25	249-222	not yet reported which blocks →	TELUS Integrated Communications	2782	Rosseau	—
2013-01-25	249-224	not yet reported which blocks →	TELUS Integrated Communications	2782	Otter Lake	—
2013-01-25	469-204	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	DALLAS	TX
2013-01-25	587-270	not yet reported which blocks →	Shaw Telecom Inc.	497E	Brooks	—
2013-01-25	602-582	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2013-01-25	602-657	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2013-01-25	609-608	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	PRINCETON	NJ
2013-01-25	715-806	0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	SCANDINAVIA TEL. CO.	0945	IOLA	WI
2013-01-25	859-636	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	SPRINGFLD	KY
2013-01-24	586-208	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2013-01-24	586-233	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2013-01-24	586-424	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2013-01-24	586-515	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2013-01-24	586-689	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2013-01-24	586-787	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2013-01-24	586-789	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2013-01-24	727-999	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - FL	937C	NWPTRICHEY	FL
2013-01-24	747-202	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	NORTHRIDGE	CA
2013-01-23	202-765	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WSHNGTNZN1	DC
2013-01-23	234-401	0–9 XXXall 10 · 6 holders which blocks →	FIRST COMMUNICATIONS, LLC	460K	NO CANTON	OH
2013-01-23	289-443	not yet reported which blocks →	Bell Canada	8051	Ancaster	—
2013-01-23	431-222	not yet reported which blocks →	LES.NET (1996) Inc.	141F	Winnipeg	—
2013-01-23	440-608	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	HILLCREST	OH
2013-01-23	440-609	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	VICTORY	OH
2013-01-23	440-704	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BEREA	OH
2013-01-23	440-706	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	HILLCREST	OH
2013-01-23	440-718	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	HILLCREST	OH
2013-01-23	440-727	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	VICTORY	OH
2013-01-23	440-763	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BEREA	OH
2013-01-23	440-803	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	VICTORY	OH
2013-01-23	440-818	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BEREA	OH
2013-01-23	507-508	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	MANKATO	MN
2013-01-23	515-631	0–9 XXXall 10 · 5 holders which blocks →	QWEST CORPORATION	9631	DES MOINES	IA
2013-01-23	561-408	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	WPALMBEACH	FL
2013-01-23	573-603	0–9 XXXall 10 · 8 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	HANNIBAL	MO
2013-01-23	587-755	not yet reported which blocks →	TELUS	8084	Calgary	—

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.