Recent prefix assignments

352 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 31

ONVOY, LLC - CA 27

NEW CINGULAR WIRELESS PCS, LLC - IL 27

ONVOY, LLC - NJ 15

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
2011-10-14	681-245	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	CHRLSTNZN1	WV
2011-10-14	778-442	not yet reported which blocks →	Shaw Telecom Inc.	497E	Armstrong	—
2011-10-14	778-443	not yet reported which blocks →	Shaw Telecom Inc.	497E	Enderby	—
2011-10-14	832-562	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	SPRING	TX
2011-10-14	845-275	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NEWBURGH	NY
2011-10-14	910-889	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	ATKINSON	NC
2011-10-13	205-703	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	BIRMINGHAM	AL
2011-10-13	779-203	8XXX9XXX which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	ROCKFORD	IL
2011-10-13	917-525	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN15	NY
2011-10-13	917-746	0–9 XXXwhole prefix which blocks →	LEVEL 3 COMMUNICATIONS, LLC - NY	4006	NWYRCYZN01	NY
2011-10-12	331-203	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	AURORA	IL
2011-10-12	331-206	0XXX1XXX9XXX · 3 holders which blocks →	T-MOBILE USA, INC.	6529	AURORA	IL
2011-10-12	567-301	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	6025	FINDLAY	OH
2011-10-12	705-274	not yet reported which blocks →	TELUS Mobility	8303	Timmins	—
2011-10-12	708-208	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2011-10-12	708-504	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2011-10-12	902-812	not yet reported which blocks →	Iristel Inc.	154E	Charlottetown	—
2011-10-11	267-521	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	PHLDLPHZN2	PA
2011-10-11	289-786	not yet reported which blocks →	Primus Telecommunications Canada Inc.	201A	St. Catharines-Thorold	—
2011-10-11	313-338	0–9 XXXall 10 · 4 holders which blocks →	MICHIGAN BELL TEL CO	9323	DETROITZN1	MI
2011-10-11	438-896	not yet reported which blocks →	Distributel	083E	Montreal	—
2011-10-11	443-214	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ANNAPOLIS	MD
2011-10-11	479-219	0–9 XXXall 10 · 5 holders which blocks →	CSC VOICE, LLC	612K	RUSSELLVL	AR
2011-10-11	514-437	not yet reported which blocks →	Distributel	083E	Montreal	—
2011-10-11	516-272	0–9 XXXall 10 · 5 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	NASSAUZN05	NY
2011-10-11	587-773	not yet reported which blocks →	Distributel	081E	Edmonton	—
2011-10-11	587-774	not yet reported which blocks →	Distributel	081E	Calgary	—
2011-10-11	604-385	not yet reported which blocks →	Shaw Telecom Inc.	497E	White Rock	—
2011-10-11	604-674	not yet reported which blocks →	Distributel	081E	Vancouver	—
2011-10-11	647-793	not yet reported which blocks →	Distributel	082E	Toronto	—
2011-10-11	647-794	not yet reported which blocks →	Distributel	082E	Toronto	—
2011-10-11	647-795	not yet reported which blocks →	Distributel	082E	Toronto	—
2011-10-11	717-942	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	GLEN ROCK	PA
2011-10-11	862-214	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NJ	6623	NEWARK	NJ
2011-10-11	917-564	0–9 XXXall 10 · 2 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	NWYRCYZN03	NY
2011-10-11	917-688	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	NWYRCYZN03	NY
2011-10-11	917-792	0–9 XXXall 10 · 3 holders which blocks →	CSC VOICE, LLC	612K	NWYRCYZN03	NY
2011-10-11	929-220	0–9 XXXall 10 · 5 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	NWYRCYZN05	NY
2011-10-11	954-225	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	FTLAUDERDL	FL
2011-10-10	202-754	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC	6402	WSHNGTNZN1	DC
2011-10-10	209-225	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MODESTO	CA
2011-10-10	317-315	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN	6725	GREENFIELD	IN
2011-10-10	479-218	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	FORT SMITH	AR
2011-10-10	501-267	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	MALVERN	AR
2011-10-10	559-365	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	FRESNO	CA
2011-10-10	619-357	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - CA	8826	EL CAJON	CA
2011-10-10	631-417	0–9 XXXall 10 · 7 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	BABYLON	NY
2011-10-10	646-574	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	NWYRCYZN01	NY
2011-10-10	651-348	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 TELECOM OF MINNESOTA, LLC - MN	5312	TWINCITIES	MN
2011-10-10	903-304	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	BONHAM	TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.