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
2019-12-19	825-443	not yet reported which blocks →	Bell West Inc.	2933	Barrhead	—
2019-12-19	825-446	not yet reported which blocks →	Bell West Inc.	2933	Vulcan	—
2019-12-19	929-534	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NWYRCYZN05	NY
2019-12-19	947-500	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	PONTIAC	MI
2019-12-18	216-304	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CLEVELAND	OH
2019-12-18	313-677	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	DETROITZN4	MI
2019-12-18	313-688	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	DETROITZN5	MI
2019-12-18	332-330	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC- NY	384C	NWYRCYZN01	NY
2019-12-18	440-629	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHARDON	OH
2019-12-18	470-542	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2019-12-18	520-420	0–9 XXXall 10 · 5 holders which blocks →	HD CARRIER LLC	321J	TUCSON	AZ
2019-12-18	573-530	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	COLUMBIA	MO
2019-12-18	586-600	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	CENTERLINE	MI
2019-12-18	618-617	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC	224C	OLNEY	IL
2019-12-18	701-960	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks →	TELNYX LLC	073H	FARGO	ND
2019-12-18	718-550	0–9 XXXwhole prefix which blocks →	ONVOY, LLC- NY	384C	NWYRCYZN06	NY
2019-12-18	825-394	not yet reported which blocks →	TELUS	8084	Edmonton	—
2019-12-18	825-401	not yet reported which blocks →	TELUS	8084	Edmonton	—
2019-12-18	825-402	not yet reported which blocks →	TELUS	8084	Edmonton	—
2019-12-18	825-404	not yet reported which blocks →	TELUS	8084	Edmonton	—
2019-12-18	848-285	0–9 XXXall 10 · 4 holders which blocks →	CSC VOICE, LLC	612K	LAKEWOOD	NJ
2019-12-18	930-666	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - IN	097D	TERREHAUTE	IN
2019-12-18	947-300	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	CLARKSTON	MI
2019-12-18	947-600	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	NORTHVILLE	MI
2019-12-18	970-742	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ASPEN	CO
2019-12-17	226-559	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	London	—
2019-12-17	226-577	not yet reported which blocks →	Rogers Communications Canada Inc. (Wireless)	8821	London	—
2019-12-17	252-270	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	ROCKYMOUNT	NC
2019-12-17	309-549	1XXX which blocks →	TELNYX LLC	073H	GALESBURG	IL
2019-12-17	316-365	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	GODDARD	KS
2019-12-17	319-348	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	WATERLOO	IA
2019-12-17	319-500	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	VINTON	IA
2019-12-17	321-340	0–9 XXXall 10 · 3 holders which blocks →	METROPCS NETWORKS, LLC	899D	ORLANDO	FL
2019-12-17	325-285	1XXX which blocks →	TELNYX LLC	073H	SAN ANGELO	TX
2019-12-17	330-918	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	YOUNGSTOWN	OH
2019-12-17	364-900	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	BEE SPRING	KY
2019-12-17	423-633	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	CHATTNOOGA	TN
2019-12-17	438-432	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2019-12-17	470-740	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - GA	067D	ATLANTA NE	GA
2019-12-17	475-477	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CT	639C	STAMFORD	CT
2019-12-17	502-628	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BARDSTOWN	KY
2019-12-17	516-836	0–9 XXXwhole prefix which blocks →	CSC WIRELESS, LLC	425J	NASSAUZN03	NY
2019-12-17	551-552	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - NJ	637C	CRAGMERE	NJ
2019-12-17	563-400	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	CRESCO	IA
2019-12-17	563-600	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	LANSING	IA
2019-12-17	602-580	0–9 XXXall 10 · 3 holders which blocks →	HD CARRIER LLC	321J	PHOENIX	AZ
2019-12-17	619-614	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	CHULAVISTA	CA
2019-12-17	657-408	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	HUNTITNBCH	CA
2019-12-17	816-608	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MO	093F	KANSASCITY	MO
2019-12-17	820-529	0XXX1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	PIRU	CA

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.