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
2016-09-14	561-720	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	WPALMBEACH	FL
2016-09-14	754-971	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	HOLLYWOOD	FL
2016-09-14	757-381	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - VA	4644	NRFOLKZON3	VA
2016-09-14	904-667	0–9 XXXall 10 · 6 holders which blocks →	BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL	9417	JACKSONVL	FL
2016-09-14	904-831	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	JACKSONVL	FL
2016-09-14	941-307	0–9 XXXall 10 · 6 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	ENGLEWOOD	FL
2016-09-13	225-540	0–9 XXXwhole prefix which blocks →	BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL	9419	BATONROUGE	LA
2016-09-13	312-684	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2016-09-13	312-687	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2016-09-13	587-448	not yet reported which blocks →	TELUS Mobility	8301	Medicine Hat	—
2016-09-13	606-294	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - KY	896E	NEON	KY
2016-09-13	639-397	not yet reported which blocks →	Iristel Inc.	154E	Saskatoon	—
2016-09-13	682-540	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	ARLINGTON	TX
2016-09-13	702-342	0–9 XXXall 10 · 2 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	LAS VEGAS	NV
2016-09-13	708-852	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	CHICAGOHTS	IL
2016-09-13	708-875	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	HARVEY	IL
2016-09-13	757-949	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	NRFOLKZON3	VA
2016-09-13	778-691	not yet reported which blocks →	TELUS Mobility	8301	Dawson Creek	—
2016-09-13	814-699	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	STATECOLLG	PA
2016-09-12	256-814	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	SHEFFIELD	AL
2016-09-12	574-373	0–9 XXXall 10 · 5 holders which blocks →	BRIGHTSPEED OF INDIANA, LLC	0832	WARSAW	IN
2016-09-12	612-601	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	TWINCITIES	MN
2016-09-12	857-773	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	METROPCS, INC.	5562	JAMAICA PL	MA
2016-09-10	925-214	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	WALNUT CRK	CA
2016-09-09	320-423	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN	5816	ST CLOUD	MN
2016-09-09	346-561	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	HOUSTON	TX
2016-09-09	469-983	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	DALLAS	TX
2016-09-09	830-360	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	NEWBRANFLS	TX
2016-09-08	206-785	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF WASHINGTON, LLC - WA	159F	SEATTLE	WA
2016-09-08	256-815	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	RUSSELLVL	AL
2016-09-08	406-729	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	WILSALL	MT
2016-09-08	469-862	0–9 XXXall 10 · 5 holders which blocks →	SOUTHWESTERN BELL	9533	DALLAS	TX
2016-09-08	505-208	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF NEW MEXICO, LLC - NM	377H	ALBUQURQUE	NM
2016-09-08	602-775	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	PHOENIX	AZ
2016-09-08	646-973	0–9 XXXall 10 · 2 holders which blocks →	PAETEC ITEL, LLC	829J	NWYRCYZN01	NY
2016-09-08	703-420	0–9 XXXall 10 · 5 holders which blocks →	NUSO, LLC	551G	MANASSAS	VA
2016-09-08	757-922	0–9 XXXall 10 · 8 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	SUFFOLK	VA
2016-09-08	814-816	3XXX4XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	CARROLLTN	PA
2016-09-08	816-915	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	KANSASCITY	MO
2016-09-08	854-202	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC	6398	CHARLESTON	SC
2016-09-08	872-804	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	CHICGOZN02	IL
2016-09-08	912-483	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF GEORGIA, LLC - GA	909E	SAVANNAH	GA
2016-09-07	239-778	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - FL	937C	NAPLES	FL
2016-09-07	458-231	0–9 XXXall 10 · 6 holders which blocks →	QWEST CORPORATION	9638	PRINEVILLE	OR
2016-09-07	469-514	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FRISCO	TX
2016-09-07	561-812	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - FL	8300	WPALMBEACH	FL
2016-09-07	579-470	not yet reported which blocks →	ISP Telecom Inc.	4727	Lanoraie	—
2016-09-07	579-471	not yet reported which blocks →	ISP Telecom Inc.	4727	Crabtree	—
2016-09-07	579-472	not yet reported which blocks →	ISP Telecom Inc.	4727	Berthierville	—
2016-09-07	619-771	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	LA MESA	CA

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.