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
2021-05-04	727-955	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	HUDSON	FL
2021-05-04	754-667	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	FTLAUDERDL	FL
2021-05-04	769-895	0–9 XXXall 10 · 2 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	JACKSON	MS
2021-05-04	786-822	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	MIAMI	FL
2021-05-04	786-944	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	NORTH DADE	FL
2021-05-04	804-770	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CUMBERLAND	VA
2021-05-04	804-844	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CHARLES CY	VA
2021-05-04	804-846	0XXX1XXX3XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	DISPUTANTA	VA
2021-05-04	804-860	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	HANOVER	VA
2021-05-04	804-948	0–9 XXXall 10 · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	GLOUCESTER	VA
2021-05-04	805-859	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	ATASCADERO	CA
2021-05-04	848-308	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	METUCHEN	NJ
2021-05-04	863-788	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	POINCIANA	FL
2021-05-04	865-864	0XXX1XXX3XXX7XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	WESTSWEETW	TN
2021-05-04	873-678	not yet reported which blocks →	ISP Telecom Inc.	4727	Buckingham	—
2021-05-04	873-679	not yet reported which blocks →	ISP Telecom Inc.	4727	Luskville	—
2021-05-04	873-680	not yet reported which blocks →	ISP Telecom Inc.	4727	Perkins	—
2021-05-04	916-818	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ELK GROVE	CA
2021-05-04	928-405	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FLAGSTAFF	AZ
2021-05-04	941-844	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	PUNTAGORDA	FL
2021-05-04	941-977	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	ENGLEWOOD	FL
2021-05-03	234-895	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	ELIVERPOOL	OH
2021-05-03	276-476	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - VA	138E	MEADOWSDAN	VA
2021-05-03	316-391	0–9 XXXall 10 · 4 holders which blocks →	IP HORIZON LLC	515J	WICHITA	KS
2021-05-03	414-279	0–9 XXXall 10 · 3 holders which blocks →	IP HORIZON LLC	515J	MILWAUKZN1	WI
2021-05-03	424-678	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7139	EL SEGUNDO	CA
2021-05-03	445-206	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHLDLPHZN2	PA
2021-05-03	531-268	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NE	3233	ATKINSON	NE
2021-05-03	579-334	not yet reported which blocks →	ISP Telecom Inc.	4727	St-Cesaire	—
2021-05-03	579-336	not yet reported which blocks →	ISP Telecom Inc.	4727	Waterloo	—
2021-05-03	579-551	not yet reported which blocks →	ISP Telecom Inc.	4727	Mirabel-St-Augustin	—
2021-05-03	608-673	0–9 XXXall 10 · 4 holders which blocks →	IP HORIZON LLC	515J	MADISON	WI
2021-05-03	814-984	0XXX2XXX4XXX5XXX7XXX9XXX · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	GENESEE	PA
2021-05-03	920-480	0–9 XXXall 10 · 5 holders which blocks →	IP HORIZON LLC	515J	GREEN BAY	WI
2021-04-30	228-250	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	BILOXI	MS
2021-04-30	272-275	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	MILTON	PA
2021-04-30	276-256	1XXX2XXX4XXX5XXX6XXX7XXX · 5 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	FIELDALE	VA
2021-04-30	276-272	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	DAVENPORT	VA
2021-04-30	309-630	0XXX6XXX9XXX · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	NOHENDERSN	IL
2021-04-30	309-910	0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC	224C	EDGINGTON	IL
2021-04-30	385-392	0–9 XXXall 10 · 4 holders which blocks →	IP HORIZON LLC	515J	PROVO	UT
2021-04-30	434-387	0XXX1XXX3XXX4XXX8XXX · 3 holders which blocks →	ONVOY, LLC - VA	138E	SCHUYLER	VA
2021-04-30	505-477	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NM	5470	SANTA FE	NM
2021-04-30	540-861	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	SALEM	VA
2021-04-30	571-615	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - VA	138E	INDENDNTHL	VA
2021-04-30	602-805	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AZ	3285	PHOENIX	AZ
2021-04-30	769-260	0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - MS	719E	BOLTON	MS
2021-04-30	769-269	0XXX1XXX7XXX · 3 holders which blocks →	ONVOY, LLC - MS	719E	HEIDELBERG	MS
2021-04-30	769-369	0XXX1XXX2XXX · 3 holders which blocks →	ONVOY, LLC - MS	719E	RICHTON	MS
2021-04-30	769-469	0XXX1XXX3XXX8XXX · 4 holders which blocks →	ONVOY, LLC - MS	719E	SUMRALL	MS

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.