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
2016-06-21	224-754	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	HIGHLANDPK	IL
2016-06-21	667-321	0–9 XXXall 10 · 6 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	PRINCEFRCK	MD
2016-06-21	754-757	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	DEERFLDBCH	FL
2016-06-21	816-647	0–9 XXXall 10 · 4 holders which blocks →	SOUTHWESTERN BELL	9533	KANSASCITY	MO
2016-06-21	857-760	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MA	990E	WATERTOWN	MA
2016-06-21	860-500	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	HARTFORD	CT
2016-06-21	860-600	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CT	199F	LITCHFIELD	CT
2016-06-20	205-858	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	COLUMBIANA	AL
2016-06-20	236-294	not yet reported which blocks →	Navigata Communications Limited	078G	D'Arcy	—
2016-06-20	236-295	not yet reported which blocks →	Navigata Communications Limited	078G	Gold Bridge	—
2016-06-20	236-296	not yet reported which blocks →	Navigata Communications Limited	078G	Pemberton	—
2016-06-20	236-297	not yet reported which blocks →	Navigata Communications Limited	078G	Shalalth	—
2016-06-20	267-785	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHLDLPHZN2	PA
2016-06-20	312-824	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	CHICGOZN01	IL
2016-06-20	336-807	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	HIGH POINT	NC
2016-06-20	470-316	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2016-06-20	470-484	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2016-06-20	515-715	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA	6570	AMES	IA
2016-06-20	901-667	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	WESTWHITEV	TN
2016-06-17	226-728	not yet reported which blocks →	Hay Communications Co-operative ltd.	972G	Centralia	—
2016-06-17	312-826	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2016-06-17	323-705	0–9 XXXall 10 · 3 holders which blocks →	METROPCS NETWORKS, LLC	899D	LSAN DA 02	CA
2016-06-17	365-205	not yet reported which blocks →	Distributel	082E	Waterdown	—
2016-06-17	405-467	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - OK	409F	YUKON	OK
2016-06-17	405-937	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OK	409F	STILLWATER	OK
2016-06-17	470-306	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	ATLANTA NE	GA
2016-06-17	530-806	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	REDDING	CA
2016-06-17	639-936	not yet reported which blocks →	Access Communications Co-operative Limited	280H	Yellow Grass	—
2016-06-17	657-335	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	SANTA ANA	CA
2016-06-17	657-337	0–9 XXXall 10 · 7 holders which blocks →	AT&T ENTERPRISES, LLC	516C	CYPRESS	CA
2016-06-17	762-225	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	WAYNESBORO	GA
2016-06-17	774-608	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	PLYMOUTH	MA
2016-06-17	775-300	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	RENO	NV
2016-06-17	805-514	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	FILLMORE	CA
2016-06-17	808-773	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	HONOLULU	HI
2016-06-17	825-697	not yet reported which blocks →	Distributel	081E	Bow Island	—
2016-06-17	825-698	not yet reported which blocks →	Distributel	081E	Burdett	—
2016-06-17	825-699	not yet reported which blocks →	Distributel	081E	Elkwater	—
2016-06-17	825-700	not yet reported which blocks →	Distributel	081E	Hilda	—
2016-06-17	825-701	not yet reported which blocks →	Distributel	081E	Irvine	—
2016-06-17	825-702	not yet reported which blocks →	Distributel	081E	Ralston	—
2016-06-17	825-703	not yet reported which blocks →	Distributel	081E	Schuler	—
2016-06-17	825-704	not yet reported which blocks →	Distributel	081E	Seven Persons	—
2016-06-17	825-705	not yet reported which blocks →	Distributel	081E	Walsh	—
2016-06-17	909-490	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	ONTARIO	CA
2016-06-17	913-295	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	KANSASCITY	KS
2016-06-17	914-817	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	MOUNTKISCO	NY
2016-06-17	929-360	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN03	NY
2016-06-17	929-370	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN07	NY
2016-06-16	469-986	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	CARROLLTON	TX

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.