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
2016-05-05	639-771	not yet reported which blocks →	Bell Mobility	6574	Nokomis	—
2016-05-05	639-772	not yet reported which blocks →	Bell Mobility	6574	Punnichy	—
2016-05-05	639-773	not yet reported which blocks →	Bell Mobility	6574	Qu'Appelle	—
2016-05-05	639-774	not yet reported which blocks →	Bell Mobility	6574	Lumsden	—
2016-05-05	639-775	not yet reported which blocks →	Bell Mobility	6574	Maryfield	—
2016-05-05	639-776	not yet reported which blocks →	Bell Mobility	6574	Milestone	—
2016-05-05	639-777	not yet reported which blocks →	Bell Mobility	6574	Strasbourg	—
2016-05-05	639-778	not yet reported which blocks →	Bell Mobility	6574	Wolseley	—
2016-05-05	639-779	not yet reported which blocks →	Bell Mobility	6574	Raymore	—
2016-05-05	660-865	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BOONVILLE	MO
2016-05-05	701-415	0–9 XXXall 10 · 5 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BISMARCK	ND
2016-05-05	816-317	0–9 XXXall 10 · 3 holders which blocks →	SOUTHWESTERN BELL	9533	LEESSUMMIT	MO
2016-05-05	870-360	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	PINE BLUFF	AR
2016-05-04	206-565	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WA	483E	BAINBDG IS	WA
2016-05-04	312-586	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC	224C	CHICGOZN01	IL
2016-05-04	346-236	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	TOMBALL	TX
2016-05-04	407-837	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	KISSIMMEE	FL
2016-05-04	425-215	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - WA	483E	BOTHELL	WA
2016-05-04	431-451	not yet reported which blocks →	Fibernetics Corporation	464D	Winnipeg	—
2016-05-04	442-287	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 TELECOM OF CALIFORNIA, LP - CA	7718	OCSD CRLS	CA
2016-05-04	469-527	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	PALMER	TX
2016-05-04	510-462	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - CA	649C	FRNK GRNLF	CA
2016-05-04	727-221	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL	6502	CLEARWATER	FL
2016-05-04	778-670	not yet reported which blocks →	TELUS	8086	Pitt Meadows	—
2016-05-04	782-461	not yet reported which blocks →	Bragg Communications Inc.	4878	Canning	—
2016-05-04	867-341	not yet reported which blocks →	Bell Mobility	6574	Arviat	—
2016-05-04	902-418	not yet reported which blocks →	Fibernetics Corporation	464D	Halifax	—
2016-05-04	914-687	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	BIRCHWOOD	NY
2016-05-04	970-786	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO	6567	LOVELAND	CO
2016-05-03	315-860	0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC- NY	384C	BARNEVELD	NY
2016-05-03	740-737	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - OH	4863	NELSONVL	OH
2016-05-03	813-291	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	TAMPACEN	FL
2016-05-02	224-539	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	PALATINE	IL
2016-05-02	236-364	not yet reported which blocks →	Distributel	081E	Chetwynd	—
2016-05-02	236-365	not yet reported which blocks →	Distributel	081E	Fort St. John	—
2016-05-02	236-366	not yet reported which blocks →	Distributel	081E	Tumbler Ridge	—
2016-05-02	236-367	not yet reported which blocks →	Distributel	081E	East Pine	—
2016-05-02	236-368	not yet reported which blocks →	Distributel	081E	Flatrock	—
2016-05-02	236-369	not yet reported which blocks →	Distributel	081E	Hudson's Hope	—
2016-05-02	236-370	not yet reported which blocks →	Distributel	081E	Montney	—
2016-05-02	236-371	not yet reported which blocks →	Distributel	081E	Pouce Coupe	—
2016-05-02	236-372	not yet reported which blocks →	Distributel	081E	Prespatou	—
2016-05-02	236-373	not yet reported which blocks →	Distributel	081E	Rolla	—
2016-05-02	236-374	not yet reported which blocks →	Distributel	081E	Taylor	—
2016-05-02	236-375	not yet reported which blocks →	Distributel	081E	Willowbrook	—
2016-05-02	470-308	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	ATLANTA NW	GA
2016-05-02	518-559	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC- NY	384C	CAMBRIDGE	NY
2016-05-02	518-709	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	SCHENCTADY	NY
2016-05-02	518-715	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	GALWAY	NY
2016-05-02	585-390	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC- NY	384C	BYRON	NY

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.