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
2020-08-10	743-216	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC	6324	WINSTN SAL	NC
2020-08-10	873-964	not yet reported which blocks →	SSi Micro Ltd.	940G	Waskaganish	—
2020-08-07	437-690	not yet reported which blocks →	Comwave Networks	160G	Toronto	—
2020-08-07	445-465	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	PHLDLPHZN4	PA
2020-08-07	445-529	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	PHPHSBZN43	PA
2020-08-07	513-694	0–9 XXXall 10 · 2 holders which blocks →	CSC WIRELESS, LLC	425J	CINCINNATI	OH
2020-08-07	614-660	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	CANALWHSTR	OH
2020-08-07	672-984	not yet reported which blocks →	TELUS Mobility	8301	Ganges	—
2020-08-07	681-336	2XXX8XXX · 2 holders which blocks →	FRACTEL, LLC	965H	SMITHVILLE	WV
2020-08-07	681-346	0XXX3XXX6XXX7XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	MASON	WV
2020-08-07	681-899	2XXX9XXX · 2 holders which blocks →	FRACTEL, LLC	965H	ROCKPORT	WV
2020-08-07	681-946	0XXX3XXX4XXX6XXX8XXX · 4 holders which blocks →	FRACTEL, LLC	965H	IAEGER	WV
2020-08-07	681-966	2XXX6XXX · 2 holders which blocks →	FRACTEL, LLC	965H	LAWFORD	WV
2020-08-07	873-263	not yet reported which blocks →	ISP Telecom Inc.	4727	St-Boniface-de-Shawinigan	—
2020-08-07	873-264	not yet reported which blocks →	ISP Telecom Inc.	4727	St-Mathieu	—
2020-08-07	909-836	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	REDLANDS	CA
2020-08-07	949-593	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	LAGUNA BCH	CA
2020-08-06	224-786	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	HIGHLANDPK	IL
2020-08-06	224-966	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	PISTAKHLDS	IL
2020-08-06	365-681	not yet reported which blocks →	Fibernetics Corporation	464D	Claremont	—
2020-08-06	365-682	not yet reported which blocks →	Fibernetics Corporation	464D	Mount Albert	—
2020-08-06	380-400	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	GAHANNA	OH
2020-08-06	385-357	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	AMERCNFORK	UT
2020-08-06	437-272	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2020-08-06	437-391	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2020-08-06	445-234	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	PHLDLPHZN1	PA
2020-08-06	445-345	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	PHLDLPHZN2	PA
2020-08-06	716-764	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	DFT LOCAL SERVICE CORP. DBA DFT SELECT ONE-NY	5367	ANGOLA	NY
2020-08-06	737-272	0–9 XXXall 10 · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7138	AUSTIN	TX
2020-08-06	873-261	not yet reported which blocks →	ISP Telecom Inc.	4727	Shawinigan	—
2020-08-06	873-262	not yet reported which blocks →	ISP Telecom Inc.	4727	Grand'Mere	—
2020-08-06	909-834	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	HIGHLAND	CA
2020-08-06	913-389	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	KANSASCITY	KS
2020-08-05	209-506	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MERCED	CA
2020-08-05	218-799	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	BRIMSON	MN
2020-08-05	218-922	0XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	BIG FALLS	MN
2020-08-05	251-346	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	EVERGREEN	AL
2020-08-05	320-724	6XXX which blocks →	FRACTEL, LLC	965H	WATKINS	MN
2020-08-05	346-895	0–9 XXXall 10 · 2 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	HOUSTON	TX
2020-08-05	414-644	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	MILWAUKZN1	WI
2020-08-05	480-701	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AZ	587F	PHOENIX	AZ
2020-08-05	507-719	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANKATO	MN
2020-08-05	540-690	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WARRENTON	VA
2020-08-05	561-593	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	WPALMBEACH	FL
2020-08-05	562-514	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LONG BEACH	CA
2020-08-05	563-290	2XXX3XXX5XXX9XXX · 3 holders which blocks →	HAWKEYE INTERCONNECT COMPANY - IA	429J	WAUCOMA	IA
2020-08-05	609-899	0–9 XXXall 10 · 7 holders which blocks →	FRACTEL, LLC	965H	WILDWOOD	NJ
2020-08-05	641-277	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OTTUMWA	IA
2020-08-05	657-449	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SILVERADO	CA
2020-08-05	737-895	0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	AUSTIN	TX

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.