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
2020-07-01	513-676	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	BETHANY	OH
2020-07-01	539-348	0–9 XXXall 10 · 8 holders which blocks →	FRACTEL, LLC	965H	SO CHETOPA	OK
2020-07-01	719-501	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CO	078F	PUEBLO	CO
2020-07-01	726-200	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	SANANTONIO	TX
2020-07-01	743-529	0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	HAYS	NC
2020-07-01	913-386	0–9 XXXall 10 · 3 holders which blocks →	NUSO, LLC	478J	KANSASCITY	KS
2020-07-01	980-758	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	MONROE	NC
2020-07-01	980-766	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	CHARLOTTE	NC
2020-07-01	980-946	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	MOORESVL	NC
2020-06-30	220-600	0XXX1XXX6XXX which blocks →	FRACTEL, LLC	965H	SCIO	OH
2020-06-30	314-847	0–9 XXXwhole prefix which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7432	LADUE	MO
2020-06-30	316-400	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	WICHITA	KS
2020-06-30	334-729	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	PINE HILL	AL
2020-06-30	437-324	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2020-06-30	470-614	0–9 XXXall 10 · 2 holders which blocks →	ASSURANCE TELECOM, LLC	518J	ATLANTA	GA
2020-06-30	507-737	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANKATO	MN
2020-06-30	579-564	not yet reported which blocks →	9164-3122 Quebec inc	843D	St-Zephirin	—
2020-06-30	620-677	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 8 holders which blocks →	FRACTEL, LLC	965H	PLAINS	KS
2020-06-30	620-788	0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 6 holders which blocks →	FRACTEL, LLC	965H	MOLINE	KS
2020-06-30	620-833	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 8 holders which blocks →	FRACTEL, LLC	965H	HUTCHINSON	KS
2020-06-30	620-844	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	FRACTEL, LLC	965H	HAMILTON	KS
2020-06-30	620-977	0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks →	FRACTEL, LLC	965H	MINNEOLA	KS
2020-06-30	657-446	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SANTA ANA	CA
2020-06-30	747-295	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	NO HOLLYWD	CA
2020-06-30	913-500	0XXX1XXX3XXX5XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	MOUND CITY	KS
2020-06-30	913-600	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	OLATHE	KS
2020-06-30	913-842	5XXX6XXX · 2 holders which blocks →	FRACTEL, LLC	965H	WINCHESTER	KS
2020-06-30	959-216	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CT	199F	SOUTHINGTN	CT
2020-06-29	202-428	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WSHNGTNZN1	DC
2020-06-29	442-320	0–9 XXXall 10 · 5 holders which blocks →	VONAGE AMERICA LLC	197D	ENCINITAS	CA
2020-06-29	470-613	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - GA	067D	TEMPLE	GA
2020-06-29	531-247	0–9 XXXall 10 · 5 holders which blocks →	CSC WIRELESS, LLC	425J	OMAHA	NE
2020-06-29	561-519	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	BOCA RATON	FL
2020-06-29	659-658	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - AL	604E	PELL CITY	AL
2020-06-29	682-842	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	SPRINGTOWN	TX
2020-06-29	785-758	0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 4 holders which blocks →	FRACTEL, LLC	965H	BELLEVILLE	KS
2020-06-29	785-788	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 7 holders which blocks →	FRACTEL, LLC	965H	SCANDIA	KS
2020-06-29	816-815	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - MO	093F	BLUE SPG	MO
2020-06-29	816-917	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - MO	093F	BUCKNER	MO
2020-06-29	831-243	0–9 XXXall 10 · 4 holders which blocks →	CSC WIRELESS, LLC	425J	SALINAS	CA
2020-06-29	850-829	0–9 XXXall 10 · 3 holders which blocks →	CSC WIRELESS, LLC	425J	PANAMACITY	FL
2020-06-29	934-300	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	AMITYVILLE	NY
2020-06-29	934-348	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	BAYPORT	NY
2020-06-29	934-529	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	SELDEN	NY
2020-06-29	936-758	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	CHIRENO	TX
2020-06-29	980-809	2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - NC	638E	WINGATE	NC
2020-06-29	980-990	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NC	638E	BELMONT	NC
2020-06-26	239-327	0–9 XXXall 10 · 6 holders which blocks →	CSC WIRELESS, LLC	425J	FORT MYERS	FL
2020-06-26	239-329	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - FL	937C	BONITA SPG	FL
2020-06-26	240-799	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	BRANDYWINE	MD

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.