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
2014-08-07	484-566	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHPHSBZN30	PA
2014-08-07	484-755	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	READING	PA
2014-08-07	484-787	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	W CHESTER	PA
2014-08-07	501-503	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AR	196F	LITTLEROCK	AR
2014-08-07	506-248	not yet reported which blocks →	TELUS Integrated Communications	2782	Campbellton	—
2014-08-07	506-249	not yet reported which blocks →	TELUS Integrated Communications	2782	St. Stephen	—
2014-08-07	506-250	not yet reported which blocks →	TELUS Integrated Communications	2782	Tracadie	—
2014-08-07	716-281	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	SILVER CRK	NY
2014-08-07	716-346	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	BUFFALO	NY
2014-08-07	716-421	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	TONAWANDA	NY
2014-08-07	902-593	not yet reported which blocks →	ISP Telecom Inc.	4727	Halifax	—
2014-08-07	929-291	0–9 XXXall 10 · 3 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	NWYRCYZN03	NY
2014-08-06	210-758	0–9 XXXall 10 · 3 holders which blocks →	AT&T ENTERPRISES, LLC	516C	SANANTONIO	TX
2014-08-06	480-469	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PHOENIX	AZ
2014-08-06	480-498	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AZ	3285	PHOENIX	AZ
2014-08-05	657-230	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	ANAHEIM	CA
2014-08-05	916-407	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	SCRM NORTH	CA
2014-08-04	213-296	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA	7240	LSAN DA 10	CA
2014-08-04	440-468	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	BAINBRIDGE	OH
2014-08-04	469-770	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	KAUFMAN	TX
2014-08-04	614-972	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	COLUMBUS	OH
2014-08-04	619-496	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	SNDG SNDG	CA
2014-08-04	720-483	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DENVER	CO
2014-08-04	818-629	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	AGOURA	CA
2014-08-04	818-928	0–9 XXXall 10 · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	PSDN LACN	CA
2014-08-04	832-957	0–9 XXXall 10 · 7 holders which blocks →	SOUTHWESTERN BELL	9533	WESTFIELD	TX
2014-08-04	857-302	0–9 XXXall 10 · 4 holders which blocks →	AIRUS, INC. - MA	428H	BOSTON	MA
2014-08-04	909-536	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CHINO	CA
2014-08-04	909-572	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	COLTON	CA
2014-08-04	916-430	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ELK GROVE	CA
2014-08-04	916-827	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	FAIR OAKS	CA
2014-08-01	209-850	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	TURLOCK	CA
2014-08-01	269-485	0XXX1XXX4XXX5XXX7XXX8XXX · 6 holders which blocks →	SOUTHWEST MICHIGAN COMMUNICATIONS, INC. - MI	144E	GOBLES	MI
2014-08-01	315-940	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	HERKIMER	NY
2014-08-01	319-204	0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	FARM & MERCH MUTUAL TELCO DBA KALONA COOP TEL	198H	MTPLEASANT	IA
2014-08-01	516-289	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NASSAUZN05	NY
2014-08-01	631-825	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	MONTAUK PT	NY
2014-08-01	646-856	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN01	NY
2014-08-01	907-885	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ANCHORAGE	AK
2014-08-01	913-275	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	KS
2014-08-01	914-359	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	WSCHSTZN01	NY
2014-08-01	929-287	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN06	NY
2014-07-31	306-437	not yet reported which blocks →	TELUS Integrated Communications	2782	Swift Current	—
2014-07-31	343-320	not yet reported which blocks →	Comwave Networks	160G	Brockville	—
2014-07-31	343-330	not yet reported which blocks →	Comwave Networks	160G	Cornwall	—
2014-07-31	470-266	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - GA	6116	BUFORD	GA
2014-07-31	581-532	not yet reported which blocks →	Comwave Networks	160G	Chicoutimi	—
2014-07-31	581-533	not yet reported which blocks →	Comwave Networks	160G	Alma	—
2014-07-31	774-515	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	BOYLSTON	MA
2014-07-31	832-897	0–9 XXXwhole prefix which blocks →	METROPCS, INC.	5562	STAFFORD	TX

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.