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
2014-10-17	657-253	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	FULLERTON	CA
2014-10-17	657-363	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	YORBALINDA	CA
2014-10-17	709-612	not yet reported which blocks →	Aliant Telecom (NF)	8085	Corner Brook	—
2014-10-17	716-387	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	BUFFALO	NY
2014-10-17	720-573	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 TELECOM OF COLORADO, LLC - CO	4574	DENVER	CO
2014-10-17	816-905	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KANSASCITY	MO
2014-10-17	862-284	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	SUCCASUNNA	NJ
2014-10-17	929-336	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN10	NY
2014-10-17	929-342	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN11	NY
2014-10-17	929-353	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN14	NY
2014-10-17	949-449	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CAPITRNVLY	CA
2014-10-17	970-829	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FT COLLINS	CO
2014-10-16	323-672	0–9 XXXall 10 · 5 holders which blocks →	METROPCS NETWORKS, LLC	899D	LSAN DA 14	CA
2014-10-16	352-818	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	LEESBURG	FL
2014-10-16	415-917	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNFC JUNPR	CA
2014-10-16	458-215	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	EUGENE	OR
2014-10-16	512-580	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	AUSTIN	TX
2014-10-16	541-930	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	MEDFORD	OR
2014-10-16	561-563	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	DELRAY BCH	FL
2014-10-16	619-551	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	CHULAVISTA	CA
2014-10-16	650-382	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 TELECOM OF CALIFORNIA, LP - CA	7718	PALO ALTO	CA
2014-10-16	657-254	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	ANAHEIM	CA
2014-10-16	669-252	0–9 XXXall 10 · 4 holders which blocks →	U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS	671J	SNJS NORTH	CA
2014-10-16	702-964	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LAS VEGAS	NV
2014-10-16	720-668	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	DENVER	CO
2014-10-16	725-261	0–9 XXXall 10 · 4 holders which blocks →	CENTRAL TEL. CO. - NEVADA DBA CENTURYLINK	2348	LAS VEGAS	NV
2014-10-16	778-291	not yet reported which blocks →	Shaw Telecom Inc.	497E	White Rock	—
2014-10-16	778-293	not yet reported which blocks →	Shaw Telecom Inc.	497E	Whalley	—
2014-10-16	778-295	not yet reported which blocks →	Shaw Telecom Inc.	497E	Richmond	—
2014-10-16	778-563	not yet reported which blocks →	Shaw Telecom Inc.	497E	Newton	—
2014-10-16	832-874	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BAMMEL	TX
2014-10-16	832-933	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2014-10-16	832-946	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	HOUSTON	TX
2014-10-16	901-468	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 TELECOM OF TENNESSEE, LLC - TN	7517	COLLIERVL	TN
2014-10-16	901-602	0–9 XXXall 10 · 2 holders which blocks →	POWERTEL MEMPHIS LICENSES, INC.	7474	MEMPHIS	TN
2014-10-16	901-607	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	MEMPHIS	TN
2014-10-16	937-952	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	DAYTON	OH
2014-10-15	208-805	0–9 XXXall 10 · 3 holders which blocks →	ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM	7865	BOISE	ID
2014-10-15	218-300	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MN	184D	TOWER	MN
2014-10-15	218-502	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MN	184D	RANIER	MN
2014-10-15	219-386	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	VALPARAISO	IN
2014-10-15	267-490	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	QUAKERTOWN	PA
2014-10-15	267-833	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MORRISVL	PA
2014-10-15	289-666	not yet reported which blocks →	InnSysVoice Corp	383H	Markham	—
2014-10-15	289-900	not yet reported which blocks →	InnSysVoice Corp	383H	Brampton	—
2014-10-15	321-317	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	COCOA	FL
2014-10-15	321-320	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	ORLANDO	FL
2014-10-15	352-973	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	LEESBURG	FL
2014-10-15	407-848	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	WINTERPARK	FL
2014-10-15	502-341	0–9 XXXall 10 · 2 holders which blocks →	POWERTEL KENTUCKY LICENSES, INC.	365C	LOUISVILLE	KY

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.