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
2014-07-18	939-335	0–9 XXXall 10 · 2 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	ARROYO	PR
2014-07-17	407-720	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	ORLANDO	FL
2014-07-17	514-548	not yet reported which blocks →	Distributel	083E	Montreal	—
2014-07-17	561-517	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	WPALMBEACH	FL
2014-07-17	581-216	not yet reported which blocks →	TELUS Quebec	2243	Alma	—
2014-07-17	581-314	not yet reported which blocks →	Videotron Ltd.	328F	Rimouski	—
2014-07-17	775-440	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	RENO	NV
2014-07-17	786-626	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MIAMI	FL
2014-07-17	873-381	not yet reported which blocks →	TELUS Quebec	2243	Val-D'Or	—
2014-07-16	224-818	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	ROUND LAKE	IL
2014-07-16	331-254	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	SUGARGROVE	IL
2014-07-16	504-507	0–9 XXXall 10 · 2 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	NEWORLEANS	LA
2014-07-16	513-570	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	CINCINNATI	OH
2014-07-16	579-214	not yet reported which blocks →	TELUS Quebec	2243	Longueuil	—
2014-07-16	579-215	not yet reported which blocks →	TELUS Quebec	2243	Boucherville	—
2014-07-16	615-645	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	NASHVILLE	TN
2014-07-16	709-299	not yet reported which blocks →	Bell Mobility Aliant	329A	Deer Lake	—
2014-07-16	867-337	not yet reported which blocks →	Bell Mobility	6574	Whitehorse	—
2014-07-15	210-780	0–9 XXXall 10 · 2 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	SANANTONIO	TX
2014-07-15	226-351	not yet reported which blocks →	TELUS Integrated Communications	2782	Tillsonburg	—
2014-07-15	506-986	not yet reported which blocks →	TELUS Integrated Communications	2782	Edmundston	—
2014-07-15	639-955	not yet reported which blocks →	SaskTel	8091	Regina	—
2014-07-15	667-225	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ANNAPOLIS	MD
2014-07-15	717-216	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	HARISBGZN1	PA
2014-07-15	830-309	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DEL RIO	TX
2014-07-15	832-902	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	BEACH CITY	TX
2014-07-15	907-406	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS	6563	EAGLERIVER	AK
2014-07-15	907-795	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PALMER	AK
2014-07-15	939-649	0–9 XXXall 10 · 2 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	ARECIBO	PR
2014-07-15	970-408	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CO	7378	JOHNSTMLKN	CO
2014-07-14	424-351	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	INGLEWOOD	CA
2014-07-14	480-450	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	PHOENIX	AZ
2014-07-14	510-560	0–9 XXXall 10 · 5 holders which blocks →	COMCAST PHONE OF CALIFORNIA, LLC	394L	OKLD TRNID	CA
2014-07-14	516-447	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NASSAUZN07	NY
2014-07-14	657-243	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	FULLERTON	CA
2014-07-14	669-242	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SNJS WEST	CA
2014-07-14	720-767	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	DENVER	CO
2014-07-14	929-522	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	NWYRCYZN08	NY
2014-07-14	949-565	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	IRVINE	CA
2014-07-13	509-638	2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	SPOKANE	WA
2014-07-11	210-721	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	SANANTONIO	TX
2014-07-11	314-325	0–9 XXXall 10 · 3 holders which blocks →	AT&T ENTERPRISES, LLC	516C	LADUE	MO
2014-07-11	830-308	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	DEL RIO	TX
2014-07-10	470-241	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	NEWNAN	GA
2014-07-10	470-259	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2014-07-10	470-388	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2014-07-10	615-487	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	NASHVILLE	TN
2014-07-10	615-928	0–9 XXXall 10 · 7 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN	7977	NASHVILLE	TN
2014-07-10	646-847	0–9 XXXall 10 · 3 holders which blocks →	AIRUS, INC. - NY	363H	NWYRCYZN01	NY
2014-07-10	720-618	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	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.