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
2019-10-09	980-300	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - NC	638E	WAXHAW	NC
2019-10-09	984-710	0–9 XXXall 10 · 7 holders which blocks →	ONVOY SPECTRUM, LLC	624H	DURHAM	NC
2019-10-08	202-926	0–9 XXXall 10 · 5 holders which blocks →	AIRUS, INC. - DC	645H	WSHNGTNZN1	DC
2019-10-08	220-710	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	PORTSMOUTH	OH
2019-10-08	234-710	0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	NORTHFIELD	OH
2019-10-08	332-216	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN01	NY
2019-10-08	351-214	0XXX1XXX2XXX3XXX4XXX9XXX · 3 holders which blocks →	VONAGE AMERICA LLC	197D	ROCKPORT	MA
2019-10-08	364-710	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	ELIZABTHTN	KY
2019-10-08	608-668	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	LA CROSSE	WI
2019-10-08	659-333	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	GUIN	AL
2019-10-08	682-299	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GLENDALE	TX
2019-10-08	725-228	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NV	4805	LAS VEGAS	NV
2019-10-08	727-293	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - FL	937C	CLEARWATER	FL
2019-10-08	737-261	0–9 XXXall 10 · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7138	AUSTIN	TX
2019-10-08	754-249	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	FTLAUDERDL	FL
2019-10-08	779-265	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	MCHENRY	IL
2019-10-08	786-726	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MIAMI	FL
2019-10-08	813-710	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	TAMPACEN	FL
2019-10-08	816-791	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MO	6123	KANSASCITY	MO
2019-10-08	850-828	0XXX2XXX3XXX6XXX8XXX · 3 holders which blocks →	ONVOY, LLC - FL	937C	WALNUTHILL	FL
2019-10-08	954-737	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - FL	937C	FTLAUDERDL	FL
2019-10-07	267-846	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	PHLDLPHZN1	PA
2019-10-07	303-529	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - CO	026D	DENVER	CO
2019-10-07	320-425	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BRAHAM	MN
2019-10-07	325-710	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SAN ANGELO	TX
2019-10-07	430-264	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - TX	903C	NEW LONDON	TX
2019-10-07	438-389	not yet reported which blocks →	Videotron Ltd.	328F	Montreal	—
2019-10-07	438-506	not yet reported which blocks →	Videotron Ltd.	328F	Montreal	—
2019-10-07	469-739	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	GRANDPRARI	TX
2019-10-07	478-877	0–9 XXXall 10 · 2 holders which blocks →	TERRA NOVA TELECOM INC.	145J	MACON	GA
2019-10-07	507-730	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WINONA	MN
2019-10-07	579-957	not yet reported which blocks →	Videotron Ltd.	328F	Longueuil	—
2019-10-07	581-978	not yet reported which blocks →	Videotron Ltd.	328F	Quebec	—
2019-10-07	681-510	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BLUEFIELD	WV
2019-10-07	681-710	0–9 XXXall 10 · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CHRLSTNZN1	WV
2019-10-07	681-810	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CLARKSBURG	WV
2019-10-07	682-298	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ARLINGTON	TX
2019-10-07	707-828	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	BENICIA	CA
2019-10-07	708-676	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FOREST	IL
2019-10-07	715-515	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	ONVOY, LLC - WI	225C	LINDSEY	WI
2019-10-07	715-910	0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 6 holders which blocks →	ONVOY, LLC - WI	225C	PITTSVILLE	WI
2019-10-07	719-516	0–9 XXXwhole prefix which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	COLORDOSPG	CO
2019-10-07	774-403	0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 4 holders which blocks →	AIRUS, INC. - MA	428H	MEDFIELD	MA
2019-10-07	779-264	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	KANKAKEE	IL
2019-10-07	857-355	0–9 XXXall 10 · 5 holders which blocks →	AIRUS, INC. - MA	428H	EVERETT	MA
2019-10-07	873-554	not yet reported which blocks →	Videotron Ltd.	328F	Sherbrooke	—
2019-10-07	873-559	not yet reported which blocks →	Videotron Ltd.	328F	Trois-Rivieres	—
2019-10-07	989-294	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MIDLAND	MI
2019-10-04	585-710	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	ROCHESTER	NY
2019-10-04	628-272	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CA	649C	POINTREYES	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.