Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 19

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
2016-11-14	425-589	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	BELLEVUE	WA
2016-11-14	470-787	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	ATLANTA NW	GA
2016-11-14	484-627	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	EASTON	PA
2016-11-14	484-657	0–9 XXXall 10 · 7 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	COATESVL	PA
2016-11-14	515-380	0–9 XXXall 10 · 2 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	DES MOINES	IA
2016-11-14	562-306	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	DOWNEY	CA
2016-11-14	563-253	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS	1170	TIPTON	IA
2016-11-14	661-314	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	BKFD MAIN	CA
2016-11-14	667-352	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ABERDEEN	MD
2016-11-14	747-260	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	SNFN SNFN	CA
2016-11-14	786-956	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MIAMI	FL
2016-11-14	786-961	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MIAMI	FL
2016-11-14	904-907	0–9 XXXall 10 · 6 holders which blocks →	POWERTEL JACKSONVILLE LICENSES, INC.	7472	ST JOHNS	FL
2016-11-14	940-938	0XXX1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	SANTA ROSA TELEPHONE COOPERATIVE, INC.	4046	CHILDRESS	TX
2016-11-14	956-348	0–9 XXXall 10 · 7 holders which blocks →	FOREMOST TELECOMMUNICATIONS CORPORATION - TX	319D	EDINBURG	TX
2016-11-14	956-732	0–9 XXXall 10 · 3 holders which blocks →	FOREMOST TELECOMMUNICATIONS CORPORATION - TX	319D	MCALLEN	TX
2016-11-11	224-421	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	ARLIGTNHTS	IL
2016-11-11	224-428	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ALGONQUIN	IL
2016-11-11	225-605	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA	8764	CLINTON	LA
2016-11-11	323-994	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	LSAN DA 14	CA
2016-11-11	438-212	not yet reported which blocks →	Bell Canada	8050	Montreal	—
2016-11-11	626-413	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	LA PUENTE	CA
2016-11-11	626-426	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	COVINA	CA
2016-11-11	647-412	not yet reported which blocks →	Bell Canada	8051	Toronto	—
2016-11-11	731-507	0–9 XXXall 10 · 5 holders which blocks →	JACKSON ENERGY AUTHORITY - TN	150G	UNION CITY	TN
2016-11-11	785-351	0XXX which blocks →	RAINBOW COMMUNICATIONS, LLC - KS	330D	WHITECLOUD	KS
2016-11-11	807-702	not yet reported which blocks →	Bell Canada	8051	Hudson	—
2016-11-11	807-703	not yet reported which blocks →	Bell Canada	8051	Fort Frances	—
2016-11-11	807-704	not yet reported which blocks →	Bell Canada	8051	Devlin	—
2016-11-10	224-602	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MUNDELEIN	IL
2016-11-10	240-690	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - DC	7529	GAITHERSBG	MD
2016-11-10	463-701	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	INDIANAPLS	IN
2016-11-10	651-508	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	TWINCITIES	MN
2016-11-10	667-400	0–9 XXXall 10 · 4 holders which blocks →	BARR TELL USA, INC.	964H	BALTIMORE	MD
2016-11-10	702-844	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	LAS VEGAS	NV
2016-11-10	708-690	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BLUEISLAND	IL
2016-11-10	778-597	not yet reported which blocks →	TELUS	8086	Osoyoos	—
2016-11-10	778-824	not yet reported which blocks →	TELUS	8086	Salmon Arm	—
2016-11-09	248-472	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	MILFDWH LK	MI
2016-11-09	336-894	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	GREENSBORO	NC
2016-11-09	417-340	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	SPRINGFLD	MO
2016-11-09	431-803	not yet reported which blocks →	Iristel Inc.	154E	Winnipeg	—
2016-11-09	431-804	not yet reported which blocks →	Iristel Inc.	154E	Winnipeg	—
2016-11-09	531-204	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NE	549E	NORFOLK	NE
2016-11-09	539-207	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA OK - LLC	530C	CHELSEA	OK
2016-11-09	720-576	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	DENVER	CO
2016-11-09	778-644	not yet reported which blocks →	Iristel Inc.	154E	South Kamloops	—
2016-11-09	782-441	not yet reported which blocks →	Bragg Communications Inc.	4878	Mabou	—
2016-11-09	979-347	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7138	BRENHAM	TX
2016-11-08	239-270	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	FORT MYERS	FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.