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
2011-06-16	385-201	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PROVO	UT
2011-06-16	458-205	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 TELECOM OF OREGON, LLC - OR	7537	EUGENE	OR
2011-06-16	505-444	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	AZTEC	NM
2011-06-16	717-287	0–9 XXXall 10 · 5 holders which blocks →	WINDSTREAM D & E SYSTEMS, INC. - PA	4114	ELIZABTHTN	PA
2011-06-16	862-238	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	PASSAIC	NJ
2011-06-15	205-452	0–9 XXXall 10 · 6 holders which blocks →	POWERTEL BIRMINGHAM LICENSES, INC.	7475	SPRINGVL	AL
2011-06-15	226-216	not yet reported which blocks →	Distributel	082E	Windsor	—
2011-06-15	407-280	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	WINTERPARK	FL
2011-06-15	561-221	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	BOCA RATON	FL
2011-06-15	561-223	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	WPALMBEACH	FL
2011-06-15	587-671	not yet reported which blocks →	Distributel	081E	Leduc	—
2011-06-15	587-672	not yet reported which blocks →	Distributel	081E	Beaumont	—
2011-06-15	587-673	not yet reported which blocks →	Distributel	081E	Drayton Valley	—
2011-06-15	587-674	not yet reported which blocks →	Distributel	081E	Fort McMurray	—
2011-06-15	587-689	not yet reported which blocks →	Distributel	081E	Edmonton	—
2011-06-15	708-264	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2011-06-15	778-693	not yet reported which blocks →	Navigata Communications Limited	078G	Prince George	—
2011-06-15	786-224	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	MIAMI	FL
2011-06-15	813-280	0–9 XXXall 10 · 4 holders which blocks →	MCI WORLDCOM COMMUNICATIONS, INC. - FL	7448	TAMPACEN	FL
2011-06-15	819-881	not yet reported which blocks →	Distributel	083E	Ottawa-Hull	—
2011-06-15	872-232	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN03	IL
2011-06-15	954-271	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	FTLAUDERDL	FL
2011-06-15	954-278	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF FLORIDA, LLC - FL	902E	FTLAUDERDL	FL
2011-06-14	217-210	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	SPRINGFLD	IL
2011-06-14	217-281	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	CHAMPAURBN	IL
2011-06-14	309-306	0–9 XXXall 10 · 2 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	PEORIA	IL
2011-06-14	347-991	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NWYRCYZN07	NY
2011-06-14	415-523	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	SNFC CNTRL	CA
2011-06-14	516-493	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY	7133	NASSAUZN05	NY
2011-06-14	574-290	1XXX2XXX9XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KEWANNA	IN
2011-06-14	856-230	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	MULLICA HL	NJ
2011-06-13	201-268	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	JERSEYCITY	NJ
2011-06-13	234-222	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	DALTON	OH
2011-06-13	385-225	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	PROVO	UT
2011-06-13	385-227	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	SALT LAKE	UT
2011-06-13	475-227	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NEW HAVEN	CT
2011-06-13	504-230	0–9 XXXall 10 · 6 holders which blocks →	VOICESTREAM GSM I, LLC	150C	KENNER	LA
2011-06-13	505-226	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - NM	123F	ALBUQURQUE	NM
2011-06-13	505-273	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM	6573	ALBUQURQUE	NM
2011-06-13	513-384	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CINCINNATI	OH
2011-06-13	702-305	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV	6458	LAS VEGAS	NV
2011-06-13	708-537	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2011-06-13	720-326	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DENVER	CO
2011-06-13	757-347	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - VA	079F	CHUCKATUCK	VA
2011-06-13	786-292	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	MIAMI	FL
2011-06-13	816-269	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	MO
2011-06-13	872-230	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICGOZN03	IL
2011-06-13	913-235	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	KS
2011-06-13	919-263	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	WAKEFOREST	NC
2011-06-13	970-286	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FT COLLINS	CO

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.