Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 21

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
2021-05-17	916-908	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	FAIR OAKS	CA
2021-05-17	916-957	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	SCRM MAIN	CA
2021-05-17	952-521	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MN	184D	NORWOOD	MN
2021-05-14	224-384	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ARLIGTNHTS	IL
2021-05-14	231-293	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	FRANKFORT	MI
2021-05-14	305-334	0–9 XXXwhole prefix which blocks →	ONVOY SPECTRUM, LLC	624H	KEYS	FL
2021-05-14	331-269	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	AURORA	IL
2021-05-14	332-248	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN01	NY
2021-05-14	434-271	0XXX1XXX · 2 holders which blocks →	TELNYX LLC	073H	FORK UNION	VA
2021-05-14	448-444	0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - FL	937C	CENTURY	FL
2021-05-14	463-263	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - IN	097D	ACTON	IN
2021-05-14	520-543	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	TUCSON	AZ
2021-05-14	540-813	0–9 XXXall 10 · 4 holders which blocks →	UNITED STATES CELLULAR - VA	6283	DUBLIN	VA
2021-05-14	561-858	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - FL	937C	WPALMBEACH	FL
2021-05-14	582-202	0XXX1XXX2XXX4XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	ORBISONIA	PA
2021-05-14	585-562	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	ATTICA	NY
2021-05-14	585-650	0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	RUSHFORD	NY
2021-05-14	585-665	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	OAKFIELD	NY
2021-05-14	585-772	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	WELLSVILLE	NY
2021-05-14	585-868	0XXX3XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	VARYSBURG	NY
2021-05-14	608-730	0–9 XXXall 10 · 8 holders which blocks →	HD CARRIER LLC	321J	STOUGHTON	WI
2021-05-14	620-469	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	ARKANSASCY	KS
2021-05-14	636-347	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	DE SOTO	MO
2021-05-14	672-978	not yet reported which blocks →	TELUS Mobility	8301	Aiyansh	—
2021-05-14	672-979	not yet reported which blocks →	TELUS Mobility	8301	Tahsis	—
2021-05-14	681-383	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - WV	080F	PTPLEASANT	WV
2021-05-14	716-660	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NEWFANE	NY
2021-05-14	716-733	2XXX3XXX6XXX7XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NO COLLINS	NY
2021-05-14	716-757	5XXX6XXX7XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	RANSOMVL	NY
2021-05-14	716-797	6XXX7XXX8XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SO DAYTON	NY
2021-05-14	725-248	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LAS VEGAS	NV
2021-05-14	774-623	0–9 XXXall 10 · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BARNSTABLE	MA
2021-05-14	786-998	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - FL	937C	NORTH DADE	FL
2021-05-14	828-643	0XXX1XXX3XXX5XXX6XXX8XXX9XXX · 2 holders which blocks →	UNITED STATES CELLULAR - NC	6282	BURNSVILLE	NC
2021-05-14	979-867	0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks →	COMMIO, LLC	939H	BRYAN	TX
2021-05-13	231-296	0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	FREMONT	MI
2021-05-13	231-298	0XXX2XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	IRONS	MI
2021-05-13	231-381	0XXX1XXX3XXX7XXX · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	WHITECLOUD	MI
2021-05-13	231-449	0XXX1XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	BALDWIN	MI
2021-05-13	260-660	0XXX1XXX2XXX3XXX6XXX7XXX · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SPENCERVL	IN
2021-05-13	423-687	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	PIKEVILLE	TN
2021-05-13	431-869	not yet reported which blocks →	Westman Media Cooperative Ltd	120F	Somerset	—
2021-05-13	431-870	not yet reported which blocks →	Westman Media Cooperative Ltd	120F	Swan Lake	—
2021-05-13	463-422	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	CICERO	IN
2021-05-13	534-300	0XXX1XXX3XXX · 2 holders which blocks →	FRACTEL, LLC	965H	DORCHESTER	WI
2021-05-13	762-301	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	THOMASTON	GA
2021-05-13	848-858	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	KEYPORT	NJ
2021-05-13	878-244	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 6 holders which blocks →	METROPCS, INC.	5562	SLIPPERYRK	PA
2021-05-13	989-406	0XXX4XXX · 2 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	FAIRVIEW	MI
2021-05-12	260-288	0XXX2XXX3XXX7XXX8XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BUTLER	IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.