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
2016-03-11	657-306	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	WESTMINSTR	CA
2016-03-11	707-229	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - CA	649C	TMCV SERN	CA
2016-03-11	707-715	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - CA	649C	COBB MT	CA
2016-03-11	731-309	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	MILLEDGEVL	TN
2016-03-11	731-315	0–9 XXXall 10 · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	ADAMSVILLE	TN
2016-03-11	740-730	0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - OH	464C	TORONTO	OH
2016-03-11	765-204	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - IN	097D	KIRKLIN	IN
2016-03-11	803-906	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - SC	548E	BEECH IS	SC
2016-03-11	845-261	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC- NY	384C	HIGHLAND	NY
2016-03-11	864-428	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - SC	548E	PELZER	SC
2016-03-11	931-616	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - TN	525E	MANCHESTER	TN
2016-03-11	937-871	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF OHIO, LLC - OH	284F	DANVILLE	OH
2016-03-11	971-812	0XXX1XXX2XXX3XXX7XXX8XXX · 2 holders which blocks →	ELTOPIA COMMUNICATIONS LLC - OR	647F	SCAPPOOSE	OR
2016-03-11	978-519	0–9 XXXall 10 · 5 holders which blocks →	AIRUS, INC. - MA	428H	HAVERHILL	MA
2016-03-10	202-804	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - DC	850D	WSHNGTNZN1	DC
2016-03-10	206-460	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WA	483E	DES MOINES	WA
2016-03-10	206-472	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WA	483E	SEATTLE	WA
2016-03-10	206-485	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WA	006F	SEATTLE	WA
2016-03-10	206-929	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WA	006F	DES MOINES	WA
2016-03-10	253-285	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WA	483E	AUBURN	WA
2016-03-10	343-760	not yet reported which blocks →	Distributel	082E	Almonte	—
2016-03-10	343-761	not yet reported which blocks →	Distributel	082E	Arnprior	—
2016-03-10	343-762	not yet reported which blocks →	Distributel	082E	Bourget	—
2016-03-10	343-763	not yet reported which blocks →	Distributel	082E	Carleton Place	—
2016-03-10	343-764	not yet reported which blocks →	Distributel	082E	Carp	—
2016-03-10	343-765	not yet reported which blocks →	Distributel	082E	Casselman	—
2016-03-10	425-230	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WA	006F	BELLEVUE	WA
2016-03-10	502-444	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF KENTUCKY, LLC - KY	035H	NEWLIBERTY	KY
2016-03-10	573-279	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MO	093F	WELLSVILLE	MO
2016-03-10	657-305	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SANTA ANA	CA
2016-03-10	702-955	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	LAS VEGAS	NV
2016-03-10	702-957	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NV	029F	LAS VEGAS	NV
2016-03-10	740-871	0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OH	464C	GNADENHTTN	OH
2016-03-10	765-770	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	PEERLESS NETWORK OF INDIANA, LLC - IN	279F	UPLAND	IN
2016-03-10	804-315	0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - VA	138E	MCKENNEY	VA
2016-03-09	209-945	0–9 XXXwhole prefix which blocks →	UTILITY TELECOM GROUP, LLC - CA	9262	STOCKTON	CA
2016-03-09	226-386	not yet reported which blocks →	Bell Mobility	6574	London	—
2016-03-09	318-667	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - LA	749E	STERLINGTN	LA
2016-03-09	318-712	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - LA	749E	LECOMPTE	LA
2016-03-09	318-714	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - LA	749E	OAK GROVE	LA
2016-03-09	318-718	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - LA	749E	BENTON	LA
2016-03-09	318-770	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - LA	749E	KEATCHIE	LA
2016-03-09	318-772	0XXX1XXX2XXX3XXX7XXX8XXX which blocks →	ONVOY, LLC - LA	749E	DOYLINE	LA
2016-03-09	323-616	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LSAN DA 03	CA
2016-03-09	423-205	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TN	525E	ETOWAH	TN
2016-03-09	430-304	0XXX1XXX2XXX3XXX4XXX8XXX · 5 holders which blocks →	ONVOY, LLC - TX	903C	POINT	TX
2016-03-09	430-305	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - TX	903C	TAWAKONI	TX
2016-03-09	430-541	0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - TX	903C	WEAVER	TX
2016-03-09	438-304	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2016-03-09	469-931	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PLANO	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.