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
2020-05-13	343-350	not yet reported which blocks →	Fibernetics Corporation	464D	Orleans	—
2020-05-13	343-351	not yet reported which blocks →	Fibernetics Corporation	464D	Richmond	—
2020-05-13	385-340	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	BOUNTIFUL	UT
2020-05-13	412-790	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	PTGSBNZN11	PA
2020-05-13	412-866	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	PTTSBGZON5	PA
2020-05-13	412-899	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - PA	547E	PTTSBGZON3	PA
2020-05-13	412-910	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - PA	547E	PTTSBGZON2	PA
2020-05-13	412-990	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	PTGSBNZN21	PA
2020-05-13	413-613	0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - MA	892D	DALTON	MA
2020-05-13	414-667	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	MILWAUKZN5	WI
2020-05-13	434-436	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - VA	138E	DRAKESBRCH	VA
2020-05-13	438-943	not yet reported which blocks →	TELUS Quebec	2243	Montreal	—
2020-05-13	438-944	not yet reported which blocks →	TELUS Quebec	2243	Montreal	—
2020-05-13	442-319	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CALIFORNCY	CA
2020-05-13	458-249	0XXX8XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	CHILOQUIN	OR
2020-05-13	475-575	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - CT	639C	RIDGEFIELD	CT
2020-05-13	478-312	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	WADLEY	GA
2020-05-13	650-374	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	PALO ALTO	CA
2020-05-13	774-779	1XXX2XXX3XXX5XXX6XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	MARION	MA
2020-05-13	785-910	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	WTC COMMUNICATIONS, INC. - KS	460D	ALMA	KS
2020-05-13	802-902	0XXX1XXX2XXX3XXX8XXX · 3 holders which blocks →	ONVOY, LLC - VT	451F	BETHEL	VT
2020-05-13	857-380	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - MA	892D	EASTBOSTON	MA
2020-05-13	857-858	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MA	892D	NEWTON	MA
2020-05-13	857-877	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MA	892D	BRIGHTON	MA
2020-05-13	858-289	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SNDG LVTA	CA
2020-05-13	956-538	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BROWNSVL	TX
2020-05-13	959-998	0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks →	ONVOY, LLC - CT	639C	LYME	CT
2020-05-12	205-973	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	DOUBLE SPG	AL
2020-05-12	240-728	0–9 XXXall 10 · 3 holders which blocks →	VONAGE AMERICA LLC	197D	WSNGTNZN10	MD
2020-05-12	251-291	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	MELVIN	AL
2020-05-12	336-569	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NC	998E	DOBSON	NC
2020-05-12	360-884	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	OLYMPIA	WA
2020-05-12	385-346	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MIDVALE	UT
2020-05-12	406-990	0XXX8XXX · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LAME DEER	MT
2020-05-12	435-293	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT	6571	KAMAS	UT
2020-05-12	516-715	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	NASSAUZN09	NY
2020-05-12	516-774	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC- NY	384C	NASSAUZN06	NY
2020-05-12	516-980	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC- NY	384C	NASSAUZN03	NY
2020-05-12	516-990	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	NASSAUZN07	NY
2020-05-12	540-880	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - VA	138E	BROWNSBURG	VA
2020-05-12	571-601	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - VA	138E	LEESBURG	VA
2020-05-12	585-566	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC- NY	384C	BLISS	NY
2020-05-12	585-580	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC- NY	384C	ANGELICA	NY
2020-05-12	585-601	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC- NY	384C	HENRIETTA	NY
2020-05-12	631-540	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC- NY	384C	MATTITUCK	NY
2020-05-12	681-294	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	HNTNGTNZN1	WV
2020-05-12	804-570	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - VA	138E	CARTERSVL	VA
2020-05-12	929-930	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	NWYRCYZN03	NY
2020-05-11	205-827	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - AL	604E	FLATWOOD	AL
2020-05-11	216-859	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	7532	CLEVELAND	OH

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.