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
2016-02-10	803-373	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - SC	548E	BATH	SC
2016-02-10	857-477	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - MA	892D	JAMAICA PL	MA
2016-02-10	928-236	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - AZ	630E	SOMERTON	AZ
2016-02-10	949-301	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	SADLBK VLY	CA
2016-02-09	249-491	not yet reported which blocks →	Iristel Inc.	154E	Markstay	—
2016-02-09	249-492	not yet reported which blocks →	Iristel Inc.	154E	Midland	—
2016-02-09	343-340	not yet reported which blocks →	Iristel Inc.	154E	Merrickville	—
2016-02-09	425-553	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	KIRKLAND	WA
2016-02-09	509-417	0XXX2XXX4XXX7XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WA	6121	WARDEN	WA
2016-02-09	515-805	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IA	9877	DES MOINES	IA
2016-02-09	631-202	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	RONKONKOMA	NY
2016-02-09	631-977	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	PATCHOGUE	NY
2016-02-09	639-392	not yet reported which blocks →	Iristel Inc.	154E	Lumsden	—
2016-02-09	709-909	not yet reported which blocks →	Iristel Inc.	154E	Marystown	—
2016-02-09	717-696	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - PA	547E	LANCASTER	PA
2016-02-09	778-717	not yet reported which blocks →	Iristel Inc.	154E	Merritt	—
2016-02-09	782-822	not yet reported which blocks →	Iristel Inc.	154E	Middleton	—
2016-02-09	782-823	not yet reported which blocks →	Iristel Inc.	154E	Montague	—
2016-02-09	807-787	not yet reported which blocks →	Iristel Inc.	154E	Marathon	—
2016-02-09	873-734	not yet reported which blocks →	Iristel Inc.	154E	Maniwaki	—
2016-02-09	909-757	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	ONTARIO	CA
2016-02-08	226-286	not yet reported which blocks →	Iristel Inc.	154E	Leamington	—
2016-02-08	226-640	not yet reported which blocks →	Iristel Inc.	154E	Listowel	—
2016-02-08	251-250	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AL	604E	BAYMINETTE	AL
2016-02-08	317-342	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	ZIONSVILLE	IN
2016-02-08	475-245	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT	6388	NORWALK	CT
2016-02-08	571-459	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA	6827	WSNGTNZN19	VA
2016-02-08	579-791	not yet reported which blocks →	Iristel Inc.	154E	Lachute	—
2016-02-08	579-792	not yet reported which blocks →	Iristel Inc.	154E	Lanoraie	—
2016-02-08	587-871	not yet reported which blocks →	Iristel Inc.	154E	Langdon	—
2016-02-08	612-426	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MN	5256	TWINCITIES	MN
2016-02-08	631-201	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC- NY	384C	AMITYVILLE	NY
2016-02-08	639-391	not yet reported which blocks →	Iristel Inc.	154E	Langham	—
2016-02-08	778-784	not yet reported which blocks →	Iristel Inc.	154E	Lillooet	—
2016-02-08	782-414	not yet reported which blocks →	Bragg Communications Inc.	421G	Halifax	—
2016-02-08	782-821	not yet reported which blocks →	Iristel Inc.	154E	Liverpool	—
2016-02-08	818-214	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	RESEDA	CA
2016-02-08	873-732	not yet reported which blocks →	Iristel Inc.	154E	Lac-Megantic	—
2016-02-05	343-244	not yet reported which blocks →	ExaTEL Inc.	3147	Ottawa-Hull	—
2016-02-05	343-303	not yet reported which blocks →	Iristel Inc.	154E	Jockvale	—
2016-02-05	475-775	0–9 XXXall 10 · 7 holders which blocks →	ONVOY, LLC - CT	639C	MERIDEN	CT
2016-02-05	506-705	not yet reported which blocks →	Iristel Inc.	154E	Harvey Station	—
2016-02-05	562-203	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	WHITTIER	CA
2016-02-05	587-207	not yet reported which blocks →	Iristel Inc.	154E	Hanna	—
2016-02-05	587-208	not yet reported which blocks →	Iristel Inc.	154E	High River	—
2016-02-05	587-209	not yet reported which blocks →	Iristel Inc.	154E	Hinton	—
2016-02-05	587-870	not yet reported which blocks →	Iristel Inc.	154E	Jasper	—
2016-02-05	616-649	0–9 XXXall 10 · 7 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - MI	770E	GRAND RPDS	MI
2016-02-05	639-399	not yet reported which blocks →	Iristel Inc.	154E	Kipling	—
2016-02-05	778-608	not yet reported which blocks →	Iristel Inc.	154E	Hope	—

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.