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
2016-09-29	579-606	not yet reported which blocks →	Bell Canada	8050	Sorel	—
2016-09-29	579-607	not yet reported which blocks →	Bell Canada	8050	St-Eustache	—
2016-09-29	579-608	not yet reported which blocks →	Bell Canada	8050	St-Hyacinthe	—
2016-09-29	873-481	not yet reported which blocks →	ISP Telecom Inc.	4727	Arundel	—
2016-09-29	929-436	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NWYRCYZN03	NY
2016-09-28	240-302	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LAUREL236	MD
2016-09-28	262-693	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	MILWAUKZN2	WI
2016-09-28	270-693	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KY	987E	JORDAN	KY
2016-09-28	272-208	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	POTTSVILLE	PA
2016-09-28	272-219	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MT POCONO	PA
2016-09-28	331-385	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	AURORA	IL
2016-09-28	409-244	0XXX4XXX · 2 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	HAMSHIRE	TX
2016-09-28	469-381	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CARROLLTON	TX
2016-09-28	682-246	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ARLINGTON	TX
2016-09-28	702-213	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NV	075F	SEARCHLIHT	NV
2016-09-28	702-559	0–9 XXXwhole prefix which blocks →	METROPCS, INC.	5562	LAS VEGAS	NV
2016-09-28	702-805	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - NV	075F	LAS VEGAS	NV
2016-09-28	779-230	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JOLIET	IL
2016-09-27	202-869	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - DC	074F	WSHNGTNZN1	DC
2016-09-27	213-328	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LSAN DA 01	CA
2016-09-27	224-271	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	LAKEFOREST	IL
2016-09-27	249-594	not yet reported which blocks →	TELUS Mobility	8303	Alliston	—
2016-09-27	260-234	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	FORT WAYNE	IN
2016-09-27	365-207	not yet reported which blocks →	Distributel	082E	Cooksville	—
2016-09-27	365-778	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Oakville	—
2016-09-27	431-996	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Winnipeg	—
2016-09-27	431-997	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Winnipeg	—
2016-09-27	484-516	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	READING	PA
2016-09-27	667-215	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	ELKTON	MD
2016-09-27	778-247	not yet reported which blocks →	Distributel	081E	Victoria	—
2016-09-27	778-326	not yet reported which blocks →	Distributel	081E	Richmond	—
2016-09-27	812-850	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	NEW ALBANY	IN
2016-09-27	830-327	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	NEWBRANFLS	TX
2016-09-26	234-219	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	DALTON	OH
2016-09-26	323-925	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	LSAN DA 03	CA
2016-09-26	336-666	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC	350F	WINSTN SAL	NC
2016-09-26	510-570	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	OKLD BKLY	CA
2016-09-26	571-371	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	WSNGTNZN08	VA
2016-09-26	661-386	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	ROSAMOND	CA
2016-09-26	669-285	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	SNJS SOUTH	CA
2016-09-26	909-751	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	S BERNDINO	CA
2016-09-26	916-345	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	SCRM NORTH	CA
2016-09-26	916-892	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	ELK GROVE	CA
2016-09-26	972-430	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	BLUE RIDGE	TX
2016-09-24	516-266	0–9 XXXall 10 · 6 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	NASSAUZN04	NY
2016-09-24	646-809	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NWYRCYZN01	NY
2016-09-23	231-545	0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	BOYNEFALLS	MI
2016-09-23	315-920	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LIVERPOOL	NY
2016-09-23	365-803	not yet reported which blocks →	Iristel Inc.	154E	Aurora	—
2016-09-23	484-513	0–9 XXXall 10 · 5 holders which blocks →	D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE	6846	READING	PA

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.