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
2013-04-09	226-686	not yet reported which blocks →	Comwave Networks	160G	Kitchener-Waterloo	—
2013-04-09	226-696	not yet reported which blocks →	Comwave Networks	160G	Hespeler	—
2013-04-09	240-503	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF MARYLAND, LLC	568G	TOMPKINSVL	MD
2013-04-09	267-928	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	PHLDLPHZN1	PA
2013-04-09	530-338	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	REDDING	CA
2013-04-09	579-266	not yet reported which blocks →	Comwave Networks	160G	St-Lambert	—
2013-04-09	579-859	not yet reported which blocks →	Comwave Networks	160G	Marieville	—
2013-04-09	579-869	not yet reported which blocks →	Comwave Networks	160G	Laprairie	—
2013-04-09	579-949	not yet reported which blocks →	Comwave Networks	160G	Beloeil	—
2013-04-09	614-721	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OH	001F	COLUMBUS	OH
2013-04-09	631-250	0–9 XXXall 10 · 5 holders which blocks →	CSC VOICE, LLC	612K	ST JAMES	NY
2013-04-09	651-412	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF MINNESOTA, LLC - MN	107F	WABASHA	MN
2013-04-09	667-307	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF MARYLAND, LLC	568G	CROFTON	MD
2013-04-09	708-864	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	TINLEYPARK	IL
2013-04-09	754-307	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	POMPANOBCH	FL
2013-04-09	778-302	not yet reported which blocks →	Videotron Ltd.	787G	Vancouver	—
2013-04-09	779-213	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	OGLESBY	IL
2013-04-09	779-215	0XXX which blocks →	IP HORIZON LLC	515J	TONICA	IL
2013-04-09	779-216	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	FRANKFORT	IL
2013-04-09	779-218	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF ILLINOIS, LLC - IL	063E	WATSEKA	IL
2013-04-08	269-222	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - MI	991E	WATERVLIET	MI
2013-04-08	404-670	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2013-04-08	405-696	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - OK	119F	EDMOND	OK
2013-04-08	469-506	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	GRANDPRARI	TX
2013-04-08	469-606	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	PLANO	TX
2013-04-08	470-625	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF GEORGIA, LLC - GA	909E	GRANTVILLE	GA
2013-04-08	678-203	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF GEORGIA, LLC - GA	909E	CLERMONT	GA
2013-04-08	832-905	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	LEAGUECITY	TX
2013-04-08	832-952	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	CYPRESS	TX
2013-04-08	860-785	0–9 XXXall 10 · 5 holders which blocks →	NUSO, LLC	551G	HARTFORD	CT
2013-04-08	909-325	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	CHINO	CA
2013-04-08	909-372	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF CALIFORNIA, LLC - CA	373F	CALIMESA	CA
2013-04-08	951-374	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - CA	981E	RIVERSIDE	CA
2013-04-08	985-216	not yet reported which blocks →	ADVANCED TEL., INC. - LA	8839	GALLIANO	LA
2013-04-08	985-301	not yet reported which blocks →	ADVANCED TEL., INC. - LA	8839	GOLDEN MDW	LA
2013-04-05	248-268	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	ROYAL OAK	MI
2013-04-05	575-404	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	ALAMOGORDO	NM
2013-04-04	302-440	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF DELAWARE, LLC - DE	349F	DELAWARECY	DE
2013-04-04	314-736	0–9 XXXall 10 · 4 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	LADUE	MO
2013-04-04	440-340	0–9 XXXall 10 · 7 holders which blocks →	PEERLESS NETWORK OF OHIO, LLC - OH	284F	VICTORY	OH
2013-04-04	440-455	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF OHIO, LLC - OH	284F	TRINITY	OH
2013-04-04	440-630	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF OHIO, LLC - OH	284F	BRECKSVL	OH
2013-04-04	469-812	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF TEXAS, LLC - TX	177F	FARMERSVL	TX
2013-04-04	505-373	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	ALBUQURQUE	NM
2013-04-04	541-209	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - OR	750E	JEFFERSON	OR
2013-04-04	607-383	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	CAMPBELL	NY
2013-04-04	607-463	0–9 XXXall 10 · 8 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	CORNING	NY
2013-04-04	607-536	0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	SAVONA	NY
2013-04-04	631-268	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF NEW YORK, LLC - NY	155E	SOUTHAMPTN	NY
2013-04-04	646-795	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	NWYRCYZN01	NY

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.