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
2014-10-09	480-849	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PHOENIX	AZ
2014-10-09	518-898	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ALBANY	NY
2014-10-09	520-389	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	TUCSON	AZ
2014-10-09	551-252	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	RAMSEY	NJ
2014-10-09	581-664	not yet reported which blocks →	Videotron Ltd.	328F	Saint-Roch-des-Aulnaies	—
2014-10-09	581-665	not yet reported which blocks →	Videotron Ltd.	328F	Saint-Simon-de-Rimouski	—
2014-10-09	585-656	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ATTICA	NY
2014-10-09	586-227	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2014-10-09	586-389	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2014-10-09	586-399	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI	6003	MT CLEMENS	MI
2014-10-09	709-750	not yet reported which blocks →	Aliant Telecom (NF)	8085	St. John's	—
2014-10-09	774-458	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	DOVER	MA
2014-10-09	775-470	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	RENO	NV
2014-10-09	785-551	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LAWRENCE	KS
2014-10-09	803-630	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC	098H	CLOVER	SC
2014-10-09	808-797	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - HI	9414	HONOLULU	HI
2014-10-09	828-747	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	ASHEVILLE	NC
2014-10-09	902-554	not yet reported which blocks →	Bragg Communications Inc.	4878	Port Morien	—
2014-10-09	902-596	not yet reported which blocks →	Bragg Communications Inc.	4878	Louisbourg	—
2014-10-09	902-607	not yet reported which blocks →	Aliant Telecom (PEI)	8087	Charlottetown	—
2014-10-09	902-785	not yet reported which blocks →	Bragg Communications Inc.	4878	St. Peters	—
2014-10-09	907-205	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS	6563	ANCHORAGE	AK
2014-10-09	910-888	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - NC	638E	SCOTTSHILL	NC
2014-10-09	910-999	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - NC	638E	CAROLINBCH	NC
2014-10-09	984-214	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRONTIER COMMUNICATIONS OF AMERICA, INC. - NC	440G	PITTSBORO	NC
2014-10-09	984-439	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	DURHAM	NC
2014-10-08	206-800	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF WASHINGTON, LLC - WA	159F	RICHMNDBCH	WA
2014-10-08	224-434	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WHEELING	IL
2014-10-08	337-509	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	LEESVILLE	LA
2014-10-08	423-708	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	CHATTNOOGA	TN
2014-10-08	424-374	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	HAWTHORNE	CA
2014-10-08	443-775	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	ANNAPOLIS	MD
2014-10-08	585-642	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ROCHESTER	NY
2014-10-08	661-494	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LANCASTER	CA
2014-10-08	661-523	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNCA SGCC	CA
2014-10-08	731-207	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	MCKENZIE	TN
2014-10-08	818-210	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	NO HOLLYWD	CA
2014-10-08	832-953	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	TOMBALL	TX
2014-10-08	858-252	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	DEL MAR	CA
2014-10-08	937-941	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	NEWCARLISL	OH
2014-10-07	240-618	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	WSNGTNZN10	MD
2014-10-07	240-702	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	GAITHERSBG	MD
2014-10-07	260-300	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - IN	097D	WOODBURN	IN
2014-10-07	260-305	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - IN	097D	NEW HAVEN	IN
2014-10-07	302-513	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE	6393	WILMINGTON	DE
2014-10-07	312-982	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	CHICGOZN01	IL
2014-10-07	475-777	0–9 XXXall 10 · 8 holders which blocks →	PEERLESS NETWORK OF CONNECTICUT, LLC - CT	539F	ANSONIDRBY	CT
2014-10-07	475-888	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF CONNECTICUT, LLC - CT	539F	FAIRFIELD	CT
2014-10-07	628-232	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	INVERNESS	CA
2014-10-07	720-500	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF COLORADO, LLC - CO	278F	DENVER	CO

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.