Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
2012-03-15	470-255	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA NE	GA
2012-03-15	470-258	0–9 XXXall 10 · 3 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA NE	GA
2012-03-15	470-314	0–9 XXXall 10 · 2 holders which blocks →	POWERTEL ATLANTA LICENSES, INC.	7473	ATLANTA NE	GA
2012-03-15	470-539	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2012-03-15	470-774	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2012-03-15	470-848	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	ATLANTA NE	GA
2012-03-15	614-703	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	HILLIARD	OH
2012-03-15	705-371	not yet reported which blocks →	Bragg Communications Inc.	4878	Kapuskasing	—
2012-03-15	705-376	not yet reported which blocks →	Bragg Communications Inc.	4878	Fauquier	—
2012-03-15	705-381	not yet reported which blocks →	Bragg Communications Inc.	4878	Moonbeam	—
2012-03-15	705-390	not yet reported which blocks →	Bragg Communications Inc.	4878	Opasatika	—
2012-03-15	778-308	not yet reported which blocks →	Fibernetics Corporation	464D	Richmond	—
2012-03-15	778-358	not yet reported which blocks →	Fibernetics Corporation	464D	New Westminster	—
2012-03-15	778-508	not yet reported which blocks →	Fibernetics Corporation	464D	West Vancouver	—
2012-03-15	779-201	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	LA SALLE	IL
2012-03-15	786-510	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MIAMI	FL
2012-03-15	902-360	not yet reported which blocks →	Bragg Communications Inc.	4878	Rusticoville	—
2012-03-14	205-704	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL	6804	BIRMINGHAM	AL
2012-03-14	314-441	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LADUE	MO
2012-03-14	405-318	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-03-14	405-394	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-03-14	405-423	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-03-14	405-435	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-03-14	405-439	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-03-14	405-446	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-03-14	405-465	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-03-14	405-719	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	OKLA CITY	OK
2012-03-14	405-727	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OKLA CITY	OK
2012-03-14	502-536	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY	6500	LOUISVILLE	KY
2012-03-14	612-231	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TWINCITIES	MN
2012-03-14	740-608	0–9 XXXall 10 · 3 holders which blocks →	HORIZON SERVICES, INC. - OH	601G	ATHENS	OH
2012-03-14	740-716	0–9 XXXall 10 · 4 holders which blocks →	HORIZON SERVICES, INC. - OH	601G	PORTSMOUTH	OH
2012-03-14	918-370	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-14	918-404	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-14	918-500	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-14	918-568	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-14	918-703	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-14	918-861	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-14	918-891	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-14	918-896	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-14	918-934	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-14	918-982	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK	5813	TULSA	OK
2012-03-13	205-551	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	PHILCMPBLL	AL
2012-03-13	205-606	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	SULLIGENT	AL
2012-03-13	251-260	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	MELVIN	AL
2012-03-13	306-954	not yet reported which blocks →	Shaw Telecom Inc.	497E	Saskatoon	—
2012-03-13	405-468	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	OKLA CITY	OK
2012-03-13	413-276	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	SPRINGFLD	MA
2012-03-13	516-427	0–9 XXXall 10 · 2 holders which blocks →	CSC VOICE, LLC	612K	NASSAUZN05	NY
2012-03-13	570-710	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	HAZLETON	PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.