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
2020-07-24	249-863	not yet reported which blocks →	TELUS Mobility	8303	New Liskeard	—
2020-07-24	249-864	not yet reported which blocks →	TELUS Mobility	8303	Sudbury	—
2020-07-24	316-368	0–9 XXXall 10 · 5 holders which blocks →	HD CARRIER LLC	321J	WICHITA	KS
2020-07-24	401-355	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	CENTREDALE	RI
2020-07-24	401-955	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	PAWTUCKET	RI
2020-07-24	463-236	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IN	7314	PLAINFIELD	IN
2020-07-24	559-599	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	CLOVIS	CA
2020-07-24	585-540	0–9 XXXall 10 · 3 holders which blocks →	HD CARRIER LLC	321J	ROCHESTER	NY
2020-07-24	659-203	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - AL	8271	BIRMINGHAM	AL
2020-07-24	689-221	0–9 XXXall 10 · 2 holders which blocks →	HD CARRIER LLC	321J	ORLANDO	FL
2020-07-24	774-395	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	ROCHESTER	MA
2020-07-24	831-830	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - CA	649C	KING CITY	CA
2020-07-24	862-477	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	SUCCASUNNA	NJ
2020-07-24	862-529	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	CALDWELL	NJ
2020-07-24	862-688	0XXX1XXX6XXX8XXX · 4 holders which blocks →	FRACTEL, LLC	965H	VERNON	NJ
2020-07-24	862-946	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	LITTLE FLS	NJ
2020-07-24	862-977	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	NEWFOUNDLD	NJ
2020-07-24	863-252	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	AVON PARK	FL
2020-07-24	865-370	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	KNOXVILLE	TN
2020-07-24	867-687	not yet reported which blocks →	TELUS Mobility	8303	Whitehorse	—
2020-07-24	904-643	0–9 XXXall 10 · 3 holders which blocks →	HD CARRIER LLC	321J	JACKSONVL	FL
2020-07-23	207-306	0–9 XXXall 10 · 6 holders which blocks →	BELL ATLANTIC MOBILE, INC	6386	BELFAST	ME
2020-07-23	207-830	0–9 XXXall 10 · 6 holders which blocks →	BELL ATLANTIC MOBILE, INC	6386	WATERVILLE	ME
2020-07-23	249-394	not yet reported which blocks →	Fibernetics Corporation	464D	Pointe Au Baril	—
2020-07-23	249-395	not yet reported which blocks →	Fibernetics Corporation	464D	Port Carling	—
2020-07-23	249-396	not yet reported which blocks →	Fibernetics Corporation	464D	Rosseau	—
2020-07-23	249-397	not yet reported which blocks →	Fibernetics Corporation	464D	Sundridge	—
2020-07-23	249-398	not yet reported which blocks →	Fibernetics Corporation	464D	Windermere	—
2020-07-23	249-865	not yet reported which blocks →	TELUS Mobility	8303	Sault Ste. Marie	—
2020-07-23	319-304	0–9 XXXall 10 · 5 holders which blocks →	CSC WIRELESS, LLC	425J	CEDAR RPDS	IA
2020-07-23	343-515	not yet reported which blocks →	ISP Telecom Inc.	4727	Arnprior	—
2020-07-23	343-516	not yet reported which blocks →	ISP Telecom Inc.	4727	Carp	—
2020-07-23	343-517	not yet reported which blocks →	ISP Telecom Inc.	4727	Constance Bay	—
2020-07-23	343-519	not yet reported which blocks →	ISP Telecom Inc.	4727	Kemptville	—
2020-07-23	413-688	0XXX1XXX2XXX6XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	MONSON	MA
2020-07-23	509-508	0–9 XXXall 10 · 5 holders which blocks →	CSC WIRELESS, LLC	425J	SPOKANE	WA
2020-07-23	534-200	0–9 XXXall 10 · 3 holders which blocks →	CSC WIRELESS, LLC	425J	EAU CLAIRE	WI
2020-07-23	548-232	not yet reported which blocks →	ISP Telecom Inc.	4727	Bright's Grove	—
2020-07-23	548-233	not yet reported which blocks →	ISP Telecom Inc.	4727	Petrolia	—
2020-07-23	563-296	0–9 XXXall 10 · 4 holders which blocks →	CSC WIRELESS, LLC	425J	DAVENPORT	IA
2020-07-23	579-330	not yet reported which blocks →	ISP Telecom Inc.	4727	Marieville	—
2020-07-23	579-331	not yet reported which blocks →	ISP Telecom Inc.	4727	Vercheres	—
2020-07-23	579-332	not yet reported which blocks →	ISP Telecom Inc.	4727	Howick	—
2020-07-23	581-206	not yet reported which blocks →	ISP Telecom Inc.	4727	Stoneham	—
2020-07-23	581-207	not yet reported which blocks →	ISP Telecom Inc.	4727	Valcartier	—
2020-07-23	651-899	0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	SCANDIMRIN	MN
2020-07-23	657-442	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	HUNTITNBCH	CA
2020-07-23	661-655	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	ARVIN	CA
2020-07-23	661-732	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	DELANO	CA
2020-07-23	712-685	0–9 XXXall 10 · 2 holders which blocks →	CSC WIRELESS, LLC	425J	SIOUX CITY	IA

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.