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
2020-05-28	234-299	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BURBANK	OH
2020-05-28	234-332	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	ONVOY, LLC - OH	464C	LODI	OH
2020-05-28	234-540	0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 2 holders which blocks →	ONVOY, LLC - OH	464C	KINSMAN	OH
2020-05-28	240-202	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - MD	876D	HIGHFIELD	MD
2020-05-28	251-325	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BAYMINETTE	AL
2020-05-28	253-338	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	AUBURN	WA
2020-05-28	256-798	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	CULLMAN	AL
2020-05-28	334-713	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	DOTHAN	AL
2020-05-28	341-226	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	OKLD FRTVL	CA
2020-05-28	341-336	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	FRNK GRNLF	CA
2020-05-28	341-356	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	FRNK MAIN	CA
2020-05-28	341-766	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	OKLD BKLY	CA
2020-05-28	380-214	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - OH	464C	DUBLIN	OH
2020-05-28	413-416	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - MA	892D	AMHERST	MA
2020-05-28	424-455	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	CULVERCITY	CA
2020-05-28	424-577	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	INGLEWOOD	CA
2020-05-28	424-677	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	REDONDO	CA
2020-05-28	424-766	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	SNMN MRVS	CA
2020-05-28	424-788	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	SAN PEDRO	CA
2020-05-28	424-877	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	SNMN SNMN	CA
2020-05-28	424-946	0–9 XXXall 10 · 7 holders which blocks →	FRACTEL, LLC	965H	W ANGELES	CA
2020-05-28	440-659	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OH	464C	PERRY	OH
2020-05-28	440-664	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks →	ONVOY, LLC - OH	464C	KIRTLAND	OH
2020-05-28	440-750	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	PARKMAN	OH
2020-05-28	475-270	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - CT	639C	WALLINGFD	CT
2020-05-28	475-405	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CT	639C	CHESHIRE	CT
2020-05-28	480-670	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	PHOENIX	AZ
2020-05-28	513-995	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OH	464C	BETHEL	OH
2020-05-28	540-927	2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	CITIZENS TELEPHONE COOPERATIVE - VA	544A	BENT MT	VA
2020-05-28	559-516	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	VISALIA	CA
2020-05-28	567-367	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - OH	464C	REPUBLIC	OH
2020-05-28	567-399	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	ALGER	OH
2020-05-28	567-405	0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OH	464C	CALEDONIA	OH
2020-05-28	585-517	0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	ONVOY, LLC- NY	384C	DALTON	NY
2020-05-28	585-522	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	BELMONT	NY
2020-05-28	585-523	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC- NY	384C	WATERPORT	NY
2020-05-28	585-620	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	ONVOY, LLC- NY	384C	CHURCHVL	NY
2020-05-28	585-699	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	DANSVILLE	NY
2020-05-28	607-318	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC- NY	384C	GREENWOOD	NY
2020-05-28	631-646	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC- NY	384C	SAYVILLE	NY
2020-05-28	667-282	1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - MD	876D	TILGHMAN	MD
2020-05-28	716-993	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	CHERRY CRK	NY
2020-05-28	769-768	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	JACKSON	MS
2020-05-28	770-746	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - GA	067D	ATLANTA SO	GA
2020-05-28	779-273	0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks →	ONVOY, LLC	224C	DANFORTH	IL
2020-05-28	779-778	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks →	ONVOY, LLC	224C	WINNEBAGO	IL
2020-05-28	838-204	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC- NY	384C	HAMPTON	NY
2020-05-28	845-385	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC- NY	384C	CALLICOON	NY
2020-05-28	857-837	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks →	ONVOY, LLC - MA	892D	CHARLESTN	MA
2020-05-28	872-873	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC	224C	CHICGOZN11	IL

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.