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
2019-10-25	785-600	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	TOPEKA	KS
2019-10-25	867-344	not yet reported which blocks →	Bell Mobility	6574	Kugaaruk	—
2019-10-25	867-345	not yet reported which blocks →	Bell Mobility	6574	Taloyoak	—
2019-10-25	867-346	not yet reported which blocks →	Bell Mobility	6574	Gjoa Haven	—
2019-10-25	867-347	not yet reported which blocks →	Bell Mobility	6574	Pangnirtung	—
2019-10-25	909-778	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ONTARIO	CA
2019-10-25	909-813	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	ONTARIO	CA
2019-10-25	915-710	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	EL PASO	TX
2019-10-25	937-930	0–9 XXXall 10 · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	DAYTON	OH
2019-10-25	956-710	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	HARLINGEN	TX
2019-10-24	206-514	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA	5812	SEATTLE	WA
2019-10-24	231-254	0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC	2964	PETOSKEY	MI
2019-10-24	314-789	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	CREVECOEUR	MO
2019-10-24	458-241	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OR	750E	ECHO	OR
2019-10-24	458-242	0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks →	ONVOY, LLC - OR	750E	IMBLER	OR
2019-10-24	458-243	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - OR	750E	GLENDALE	OR
2019-10-24	458-244	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OR	750E	MYRTLE CRK	OR
2019-10-24	480-601	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ	6572	PHOENIX	AZ
2019-10-24	516-820	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NASSAUZN02	NY
2019-10-24	531-710	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	OMAHA	NE
2019-10-24	581-408	not yet reported which blocks →	Iristel Inc.	346J	Rimouski	—
2019-10-24	581-409	not yet reported which blocks →	Iristel Inc.	346J	Baie-Comeau	—
2019-10-24	636-732	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	GRAYSUMMIT	MO
2019-10-24	681-226	0XXX1XXX3XXX4XXX5XXX6XXX · 3 holders which blocks →	FRACTEL, LLC	965H	WHELNGZON2	WV
2019-10-24	681-348	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	WEIRTON	WV
2019-10-24	689-710	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	WINTERPARK	FL
2019-10-24	707-626	0XXX1XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	BOONVILLE	CA
2019-10-24	725-710	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	LAS VEGAS	NV
2019-10-24	825-477	not yet reported which blocks →	Iristel Inc.	346J	Edmonton	—
2019-10-24	825-577	not yet reported which blocks →	Iristel Inc.	346J	Calgary	—
2019-10-24	904-544	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	JACKSONVL	FL
2019-10-24	971-364	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	ONVOY, LLC - OR	750E	CHARBONNEU	OR
2019-10-24	971-365	1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - OR	750E	DETROIT	OR
2019-10-24	971-366	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OR	750E	BEAVER	OR
2019-10-24	971-367	0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OR	750E	HOOD LAND	OR
2019-10-23	224-319	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IL	984E	DESPLAINES	IL
2019-10-23	250-948	not yet reported which blocks →	TELUS Mobility	8301	100 Mile House	—
2019-10-23	307-310	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CHEYENNE	WY
2019-10-23	309-810	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	PEORIA	IL
2019-10-23	380-710	0–9 XXXall 10 · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	COLUMBUS	OH
2019-10-23	414-710	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	MILWAUKZN1	WI
2019-10-23	434-424	0–9 XXXall 10 · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CHARLOTSVL	VA
2019-10-23	657-403	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2019-10-23	708-685	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2019-10-23	757-910	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	NRFOLKZON2	VA
2019-10-23	802-900	0XXX9XXX · 2 holders which blocks →	COMMIO, LLC	939H	BURLINGTON	VT
2019-10-23	825-286	not yet reported which blocks →	Bell West Inc.	2933	La Crete	—
2019-10-23	825-287	not yet reported which blocks →	Bell West Inc.	2933	Red Earth	—
2019-10-23	901-479	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - TN	525E	MEMPHIS	TN
2019-10-23	910-710	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	FAYETTEVL	NC

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.