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
2013-06-17	956-352	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	RIGRANDECY	TX
2013-06-17	956-509	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BROWNSVL	TX
2013-06-14	234-804	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	CANTON	OH
2013-06-14	314-665	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ST LOUIS	MO
2013-06-14	437-887	not yet reported which blocks →	Fibernetics Corporation	464D	Toronto	—
2013-06-14	438-228	not yet reported which blocks →	Fibernetics Corporation	464D	Montreal	—
2013-06-14	440-830	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 6 holders which blocks →	T-MOBILE USA, INC.	6529	LORAIN	OH
2013-06-14	484-425	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	ALLENTOWN	PA
2013-06-14	581-720	not yet reported which blocks →	TELUS Quebec	8083	Rimouski	—
2013-06-14	585-446	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 TELECOM OF NEW YORK, LP - NY	8473	W WEBSTER	NY
2013-06-14	586-522	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	MT CLEMENS	MI
2013-06-14	612-806	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TWINCITIES	MN
2013-06-14	615-913	0–9 XXXall 10 · 4 holders which blocks →	POWERTEL NASHVILLE LICENSES, INC.	7476	NASHVILLE	TN
2013-06-14	631-449	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	BRENTWOOD	NY
2013-06-14	647-252	not yet reported which blocks →	TELUS Integrated Communications	2782	Toronto	—
2013-06-14	647-790	not yet reported which blocks →	TELUS Integrated Communications	2782	Toronto	—
2013-06-14	785-802	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	JUNCTIONCY	KS
2013-06-14	808-725	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	HONOLULU	HI
2013-06-14	819-982	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Maniwaki	—
2013-06-14	873-405	not yet reported which blocks →	TELUS Quebec	2243	Shawinigan	—
2013-06-14	928-293	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	KINGMAN	AZ
2013-06-13	213-263	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LSAN DA 10	CA
2013-06-13	219-702	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	GARY	IN
2013-06-13	224-806	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ELGIN	IL
2013-06-13	323-484	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LSAN DA 06	CA
2013-06-13	323-536	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	LSAN DA 14	CA
2013-06-13	424-302	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	BEVERLYHLS	CA
2013-06-13	657-223	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	ORANGE	CA
2013-06-13	708-506	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CHICAGOHTS	IL
2013-06-13	708-580	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2013-06-13	747-226	0–9 XXXall 10 · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	CANOGAPARK	CA
2013-06-13	818-938	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	RESEDA	CA
2013-06-12	202-971	0–9 XXXall 10 · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	WSHNGTNZN1	DC
2013-06-12	224-804	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	DEERFIELD	IL
2013-06-12	226-308	not yet reported which blocks →	Quadro Communications Co-operative Inc.	004G	Ilderton	—
2013-06-12	313-265	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	DETROITZN1	MI
2013-06-12	405-402	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	ANADARKO	OK
2013-06-12	405-835	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	OKLA CITY	OK
2013-06-12	413-801	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	AMHERST	MA
2013-06-12	581-420	not yet reported which blocks →	Videotron Ltd.	8306	Beauceville	—
2013-06-12	702-832	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	LAS VEGAS	NV
2013-06-12	720-415	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	DENVER	CO
2013-06-12	720-557	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	DENVER	CO
2013-06-12	774-801	0–9 XXXall 10 · 8 holders which blocks →	COMCAST IP PHONE, LLC	318J	ORLEANS	MA
2013-06-12	805-663	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	OXNARD	CA
2013-06-12	813-456	0–9 XXXwhole prefix which blocks →	LEVEL 3 TELECOM OF FLORIDA, LP - FL	7635	TAMPACEN	FL
2013-06-12	909-453	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	S BERNDINO	CA
2013-06-12	951-379	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	MORENO	CA
2013-06-12	971-801	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PORTLAND	OR
2013-06-11	226-851	not yet reported which blocks →	TELUS Integrated Communications	2782	Brantford	—

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.