Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
2015-03-11	602-394	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2015-03-11	614-966	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	COLUMBUS	OH
2015-03-11	626-362	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	LA PUENTE	CA
2015-03-11	843-970	0–9 XXXall 10 · 7 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL	9417	SUMMERVL	SC
2015-03-11	858-262	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SNDG LVTA	CA
2015-03-11	865-340	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	KNOXVILLE	TN
2015-03-11	916-695	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2015-03-11	931-321	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN	6673	LAWRENCEBG	TN
2015-03-11	951-447	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	MURRIETA	CA
2015-03-11	984-212	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	RALEIGH	NC
2015-03-10	204-908	not yet reported which blocks →	Bell Mobility	6574	Virden	—
2015-03-10	209-454	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNRA MAIN	CA
2015-03-10	289-258	not yet reported which blocks →	InnSysVoice Corp	383H	Aurora	—
2015-03-10	289-262	not yet reported which blocks →	InnSysVoice Corp	383H	Bethesda	—
2015-03-10	305-780	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	KEYS	FL
2015-03-10	512-713	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	GEORGETOWN	TX
2015-03-10	520-815	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AZ	587F	TUCSON	AZ
2015-03-10	531-600	0–9 XXXall 10 · 5 holders which blocks →	ALLO COMMUNICATIONS LLC	907K	OMAHA	NE
2015-03-10	559-796	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	HANFORD	CA
2015-03-10	571-665	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	HERNDON	VA
2015-03-10	708-981	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	T-MOBILE USA, INC.	6529	ORLAND	IL
2015-03-10	709-983	not yet reported which blocks →	TELUS Integrated Communications	2782	Bay Roberts	—
2015-03-10	709-984	not yet reported which blocks →	TELUS Integrated Communications	2782	Upper Island Cove	—
2015-03-10	803-850	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - SC	077F	FAIRFAX	SC
2015-03-10	819-525	not yet reported which blocks →	Videotron Ltd.	8306	Ottawa-Hull	—
2015-03-10	929-299	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	NWYRCYZN06	NY
2015-03-10	980-439	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	CONCORD	NC
2015-03-09	209-427	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	TURLOCK	CA
2015-03-09	309-430	0–9 XXXall 10 · 5 holders which blocks →	GENESEO COMMUNICATIONS SERVICES, INC. - IL	8790	ROCKISLAND	IL
2015-03-09	323-847	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LSAN DA 13	CA
2015-03-09	336-781	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	HIGH POINT	NC
2015-03-09	405-965	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHANDLER	OK
2015-03-09	424-391	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	HAWTHORNE	CA
2015-03-09	424-396	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	CMTN GRDN	CA
2015-03-09	442-273	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	VISTA	CA
2015-03-09	470-686	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	NEWNAN	GA
2015-03-09	559-563	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	VISALIA	CA
2015-03-09	571-365	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	BRADDOCK	VA
2015-03-09	609-795	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NJ	118F	FORT DIX	NJ
2015-03-09	641-854	0–9 XXXall 10 · 6 holders which blocks →	QWEST CORPORATION	9631	MARSHALLTN	IA
2015-03-09	661-421	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	BKFD MAIN	CA
2015-03-09	714-949	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	SANTA ANA	CA
2015-03-09	805-843	0–9 XXXall 10 · 4 holders which blocks →	METROPCS NETWORKS, LLC	899D	OXNARD	CA
2015-03-09	857-757	0–9 XXXall 10 · 5 holders which blocks →	THE VOICE APPLICATION NETWORK, LLC	507J	CAMBRIDGE	MA
2015-03-09	929-371	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	NWYRCYZN04	NY
2015-03-09	951-438	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	HEMT HEMT	CA
2015-03-09	951-448	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PERRIS	CA
2015-03-09	951-463	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CORONA	CA
2015-03-09	980-414	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	INDIANTRAL	NC
2015-03-09	980-616	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	CONCORD	NC

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.