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
2021-05-10	346-566	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	WESTFIELD	TX
2021-05-10	346-588	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	CYPRESS	TX
2021-05-10	346-599	0–9 XXXall 10 · 2 holders which blocks →	FRACTEL, LLC	965H	HOUSTON	TX
2021-05-10	346-688	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	MANVEL	TX
2021-05-10	346-699	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	HSTNSUBURB	TX
2021-05-10	346-866	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	VLY LODGE	TX
2021-05-10	346-966	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	PORTER	TX
2021-05-10	409-399	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	HEMPHILL	TX
2021-05-10	409-788	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	MAURICEVL	TX
2021-05-10	430-388	0XXX1XXX2XXX3XXX7XXX8XXX · 5 holders which blocks →	FRACTEL, LLC	965H	VAN	TX
2021-05-10	430-588	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	MARSHALL	TX
2021-05-10	430-688	1XXX2XXX4XXX5XXX6XXX8XXX · 4 holders which blocks →	FRACTEL, LLC	965H	LINDEN	TX
2021-05-10	430-788	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	BIG SANDY	TX
2021-05-10	432-313	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks →	TELNYX LLC	073H	TERMINAL	TX
2021-05-10	440-780	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	AVON	OH
2021-05-10	440-790	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	GENEVA	OH
2021-05-10	440-820	0XXX2XXX3XXX8XXX9XXX · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	HUNTSBURG	OH
2021-05-10	440-844	0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY SPECTRUM, LLC	624H	MADISON	OH
2021-05-10	440-890	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	MENTOR	OH
2021-05-10	445-209	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHLDLPHZN2	PA
2021-05-10	445-210	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	PHPHSBZN39	PA
2021-05-10	563-842	2XXX5XXX6XXX · 3 holders which blocks →	FRACTEL, LLC	965H	HOLY CROSS	IA
2021-05-10	573-804	0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	TELNYX LLC	073H	SENATH	MO
2021-05-10	574-374	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	GOSHEN	IN
2021-05-10	616-898	2XXX3XXX6XXX7XXX8XXX · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	ALTO	MI
2021-05-10	626-612	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	COVINA	CA
2021-05-10	680-247	6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	LYSANDER	NY
2021-05-10	725-247	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LAS VEGAS	NV
2021-05-10	737-288	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	AUSTIN	TX
2021-05-10	737-688	0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	FRACTEL, LLC	965H	COUPLAND	TX
2021-05-10	774-476	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	BARNSTABLE	MA
2021-05-10	785-895	8XXX which blocks →	TWILIO INTERNATIONAL, INC.	506J	TOPEKA	KS
2021-05-10	808-869	0–9 XXXwhole prefix which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	HONOLULU	HI
2021-05-10	816-696	0XXX6XXX · 2 holders which blocks →	TELNYX LLC	073H	STEWARTSVL	MO
2021-05-10	825-897	not yet reported which blocks →	ISP Telecom Inc.	4727	High River	—
2021-05-10	825-898	not yet reported which blocks →	ISP Telecom Inc.	4727	Morley	—
2021-05-10	825-899	not yet reported which blocks →	ISP Telecom Inc.	4727	Strathmore	—
2021-05-10	830-599	1XXX3XXX4XXX5XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	LA PRYOR	TX
2021-05-10	830-946	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	NEWBRANFLS	TX
2021-05-10	856-398	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	MOORESTOWN	NJ
2021-05-10	914-599	9XXX which blocks →	FRACTEL, LLC	965H	LAKELAND	NY
2021-05-10	914-622	2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	LEWISBORO	NY
2021-05-10	914-877	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	OSSINING	NY
2021-05-10	916-909	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LINCOLN	CA
2021-05-10	934-758	0–9 XXXall 10 · 7 holders which blocks →	FRACTEL, LLC	965H	ISLIP	NY
2021-05-10	936-388	2XXX3XXX6XXX7XXX8XXX · 3 holders which blocks →	FRACTEL, LLC	965H	SHIRO	TX
2021-05-10	956-822	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	BROWNSVL	TX
2021-05-10	956-855	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	MCALLEN	TX
2021-05-10	956-922	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	LA FERIA	TX
2021-05-10	979-789	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	BAY CITY	TX

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.