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
2014-08-28	682-308	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	ARLINGTON	TX
2014-08-28	720-501	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	DENVER	CO
2014-08-28	805-774	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FILLMORE	CA
2014-08-28	810-445	0–9 XXXall 10 · 4 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	GRANDBLANC	MI
2014-08-28	816-944	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LEESSUMMIT	MO
2014-08-28	818-617	0–9 XXXall 10 · 5 holders which blocks →	PACIFIC BELL (COMPETITIVE)	7480	SNFN SNFN	CA
2014-08-28	928-383	0XXX1XXX7XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CHINLE	AZ
2014-08-27	305-928	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	KEYS	FL
2014-08-27	639-600	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	639-601	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	639-602	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	639-603	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	639-604	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	639-605	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	639-606	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	639-607	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	639-608	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	639-609	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	Regina	—
2014-08-27	727-308	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	STPETERSBG	FL
2014-08-27	786-671	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	MIAMI	FL
2014-08-26	224-760	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	ELGIN	IL
2014-08-26	236-826	not yet reported which blocks →	Zayo Canada Inc.	8304	Vancouver	—
2014-08-26	236-828	not yet reported which blocks →	Zayo Canada Inc.	8304	Vancouver	—
2014-08-26	321-314	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	ORLANDO	FL
2014-08-26	321-315	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	ORLANDO	FL
2014-08-26	336-515	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	KERNERSVL	NC
2014-08-26	407-724	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KISSIMMEE	FL
2014-08-26	438-259	not yet reported which blocks →	Zayo Canada Inc.	8304	Montreal	—
2014-08-26	469-618	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	FRISCO	TX
2014-08-26	469-740	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	FRISCO	TX
2014-08-26	470-745	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	ZEBULON	GA
2014-08-26	480-360	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - AZ	587F	PHOENIX	AZ
2014-08-26	515-305	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	DES MOINES	IA
2014-08-26	609-250	0–9 XXXall 10 · 7 holders which blocks →	BARR TELL USA, INC. - NJ	917G	PRINCETON	NJ
2014-08-26	808-798	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - HI	6516	HONOLULU	HI
2014-08-26	859-287	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	COVINGTON	KY
2014-08-26	859-545	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KY	987E	FALMOUTH	KY
2014-08-26	859-787	0–9 XXXall 10 · 2 holders which blocks →	POWERTEL KENTUCKY LICENSES, INC.	365C	LEXINGTON	KY
2014-08-26	980-338	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	GROVER	NC
2014-08-26	984-538	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	CREEDMOOR	NC
2014-08-25	217-908	1XXX6XXX8XXX9XXX · 3 holders which blocks →	ADAMS TELSYSTEMS, INC.	7091	CARTHAGE	IL
2014-08-25	315-864	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	UTICA	NY
2014-08-25	405-421	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF OKLAHOMA, LLC - OK	384H	OKLA CITY	OK
2014-08-25	412-495	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PTTSBGZON1	PA
2014-08-25	512-792	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	AUSTIN	TX
2014-08-25	585-623	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ROCHESTER	NY
2014-08-25	612-470	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - MN	980E	TWINCITIES	MN
2014-08-25	631-994	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BRENTWOOD	NY
2014-08-25	720-492	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	DENVER	CO
2014-08-25	859-739	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY	6500	COVINGTON	KY

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.