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
2014-10-03	608-416	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - WI	5489	MADISON	WI
2014-10-03	682-312	0–9 XXXall 10 · 3 holders which blocks →	AT&T ENTERPRISES, LLC	516C	FORT WORTH	TX
2014-10-03	702-863	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LAS VEGAS	NV
2014-10-03	747-242	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	CANOGAPARK	CA
2014-10-03	808-784	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	HONOLULU	HI
2014-10-03	818-318	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	AGOURA	CA
2014-10-03	843-888	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - SC	548E	MTPLEASANT	SC
2014-10-03	843-999	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - SC	077F	MYRTLE BCH	SC
2014-10-03	858-295	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LA JOLLA	CA
2014-10-03	864-999	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - SC	548E	GREENVILLE	SC
2014-10-03	872-814	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHICGOZN04	IL
2014-10-03	873-842	not yet reported which blocks →	Videotron Ltd.	328F	Rouyn-Noranda	—
2014-10-03	902-780	not yet reported which blocks →	Comwave Networks	160G	Sydney	—
2014-10-03	902-781	not yet reported which blocks →	Comwave Networks	160G	Charlottetown	—
2014-10-03	904-606	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	MIDDLEBURG	FL
2014-10-03	929-296	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN08	NY
2014-10-03	929-332	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN03	NY
2014-10-03	931-218	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TN	4806	CLARKSVL	TN
2014-10-03	959-999	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CT	639C	HARTFORD	CT
2014-10-03	980-309	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	CHARLOTTE	NC
2014-10-03	980-337	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NC	3235	CHARLOTTE	NC
2014-10-02	213-326	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	LSAN DA 01	CA
2014-10-02	289-504	not yet reported which blocks →	ExaTEL Inc.	3147	Newmarket	—
2014-10-02	289-506	not yet reported which blocks →	ExaTEL Inc.	3147	Richmond Hill	—
2014-10-02	289-507	not yet reported which blocks →	ExaTEL Inc.	3147	Markham	—
2014-10-02	385-255	0–9 XXXall 10 · 4 holders which blocks →	FIRSTDIGITAL TELECOM, LLC - UT	5727	MIDVALE	UT
2014-10-02	415-530	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	SNFC CNTRL	CA
2014-10-02	505-303	0–9 XXXall 10 · 8 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SANTA FE	NM
2014-10-02	561-510	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	JUPITER	FL
2014-10-02	720-503	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DENVER	CO
2014-10-02	720-705	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	DENVER	CO
2014-10-02	720-966	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FORTLUPTON	CO
2014-10-02	808-785	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	HILO	HI
2014-10-02	873-395	not yet reported which blocks →	TELUS Quebec	2243	Val-D'Or	—
2014-10-02	873-840	not yet reported which blocks →	Videotron Ltd.	328F	Amos	—
2014-10-02	873-841	not yet reported which blocks →	Videotron Ltd.	328F	Val-D'Or	—
2014-10-02	916-586	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	FOLSOM	CA
2014-10-02	916-621	0–9 XXXall 10 · 8 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SCRM NORTH	CA
2014-10-02	916-694	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SCRM MAIN	CA
2014-10-02	949-656	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	IRVINE	CA
2014-10-02	989-259	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MIDLAND	MI
2014-10-01	205-830	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	BESSEMER	AL
2014-10-01	208-997	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - ID	7558	MOSCOW	ID
2014-10-01	224-478	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	DESPLAINES	IL
2014-10-01	289-503	not yet reported which blocks →	ExaTEL Inc.	3147	Bolton	—
2014-10-01	402-906	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	OMAHA	NE
2014-10-01	424-372	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	W ANGELES	CA
2014-10-01	425-236	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	BOTHELL	WA
2014-10-01	438-349	not yet reported which blocks →	TELUS Mobility	8303	Montreal	—
2014-10-01	438-350	not yet reported which blocks →	TELUS Mobility	8303	Montreal	—

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.