Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 708

ONVOY, LLC 1

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
2008-10-08	708-582	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	LA GRANGE	IL
2008-10-06	708-328	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2008-08-12	708-374	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	CHICAGOHTS	IL
2008-07-10	708-629	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	BLUEISLAND	IL
2008-05-19	708-928	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2008-03-19	708-953	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	HARVEY	IL
2007-10-11	708-890	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICAGOHTS	IL
2007-07-12	708-872	0–9 XXXall 10 · 6 holders which blocks →	RCN TELECOM SERVICES OF ILLINIOS, INC. - IL	8702	LANSING	IL
2007-07-10	708-674	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2007-07-06	708-595	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2007-03-28	708-262	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2007-02-21	708-446	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	LA GRANGE	IL
2007-02-20	708-527	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	HARVEY	IL
2007-01-24	708-548	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2006-10-25	708-529	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	OAK LAWN	IL
2006-09-19	708-663	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	CHICAGOHTS	IL
2006-09-08	708-979	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2006-08-22	708-522	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL	6333	LA GRANGE	IL
2006-06-23	708-949	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	ORLAND	IL
2006-06-21	708-248	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	CHICAGOHTS	IL
2006-06-21	708-407	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2006-06-21	708-885	0–9 XXXall 10 · 7 holders which blocks →	PAETEC ITEL, LLC	829J	MONEE	IL
2006-06-21	708-966	0–9 XXXall 10 · 6 holders which blocks →	PAETEC ITEL, LLC	829J	ORLAND	IL
2006-06-06	708-543	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	CHICAGOHTS	IL
2006-04-27	708-634	0–9 XXXall 10 · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	OAK LAWN	IL
2006-04-27	708-665	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	OAK PARK	IL
2005-12-21	708-414	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	CRETE	IL
2005-11-21	708-620	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2005-09-28	708-833	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	CHICAGOHTS	IL
2005-04-22	708-969	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2005-03-02	708-336	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	TINLEYPARK	IL
2005-02-22	708-577	0–9 XXXall 10 · 7 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BLUEISLAND	IL
2005-02-10	708-377	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	BLUEISLAND	IL
2004-09-29	708-213	0–9 XXXall 10 · 4 holders which blocks →	ILLINOIS BELL TEL CO	9329	HOMEWOOD	IL
2004-09-24	708-245	0–9 XXXwhole prefix which blocks →	ILLINOIS BELL TEL CO	9329	LA GRANGE	IL
2004-05-24	708-468	0–9 XXXall 10 · 5 holders which blocks →	FIRST COMMUNICATIONS, LLC	460K	TINLEYPARK	IL
2003-03-05	708-299	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2003-01-15	708-701	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	SUMMIT	IL
2002-10-16	708-691	5XXX6XXX7XXX8XXX which blocks →	T-MOBILE USA, INC.	6529	ORLAND	IL
2002-06-19	708-670	none assigned yet which blocks →	METROPCS, INC.	5562	SUMMIT	IL
2002-06-17	708-704	0XXX6XXX7XXX8XXX9XXX which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BLUEISLAND	IL
2002-06-10	708-743	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2002-05-21	708-699	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	LA GRANGE	IL
2002-04-25	708-792	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	PEOTONE	IL
2002-03-13	708-717	7XXX which blocks →	T-MOBILE USA, INC.	6529	ORLAND	IL
2002-02-22	708-310	3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LA GRANGE	IL
2002-02-13	708-769	not yet reported which blocks →	T-MOBILE USA, INC.	6529	CHICAGOHTS	IL
2002-02-11	708-307	7XXX8XXX which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2002-02-11	708-439	5XXX7XXX8XXX which blocks →	T-MOBILE USA, INC.	6529	HARVEY	IL
2001-11-15	708-932	none assigned yet which blocks →	T-MOBILE USA, INC.	6529	HARVEY	IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.