Recent thousands-block assignments

2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 410

ONVOY, LLC - MD 2

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 thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2006-06-20	410-400-7XXX	7000–7999	Assigned	PAETEC ITEL, LLC	829J	BALTIMORE	MD
2006-06-20	410-400-8XXX	8000–8999	Assigned	PAETEC ITEL, LLC	829J	BALTIMORE	MD
2006-06-20	410-400-9XXX	9000–9999	Assigned	PAETEC ITEL, LLC	829J	BALTIMORE	MD
2006-06-20	410-482-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	GREENSBORO	MD
2006-06-20	410-621-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	PRINCEANNE	MD
2006-06-20	410-634-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	RIDGELY	MD
2006-06-20	410-648-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	GALENA	MD
2006-06-20	410-673-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	PRESTON	MD
2006-06-20	410-784-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	DEALISLAND	MD
2006-06-20	410-943-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	HURLOCK	MD
2006-06-14	410-512-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	TOWSON	MD
2006-06-14	410-517-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	REISTERSTN	MD
2006-05-31	410-648-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	GALENA	MD
2006-05-31	410-874-2XXX	2000–2999	Assigned	PAETEC ITEL, LLC	829J	ODENTON	MD
2006-05-31	410-885-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	CHESAPKECY	MD
2006-05-22	410-870-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	PARKVILLE	MD
2006-05-22	410-870-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	PARKVILLE	MD
2006-05-19	410-941-0XXX	0000–0999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	JARRETTSVL	MD
2006-05-03	410-406-3XXX	3000–3999	Assigned	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	7591	ESSEX	MD
2006-05-03	410-645-5XXX	5000–5999	Assigned	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	7591	WOODLAWN	MD
2006-05-03	410-650-7XXX	7000–7999	Assigned	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	7591	DUNDALK	MD
2006-05-01	410-300-0XXX	0000–0999	Assigned	METROPCS, INC.	5562	ELKRIDGE	MD
2006-05-01	410-514-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	SEVERN	MD
2006-05-01	410-782-1XXX	1000–1999	Assigned	METROPCS, INC.	5562	ELKRIDGE	MD
2006-05-01	410-782-5XXX	5000–5999	Assigned	METROPCS, INC.	5562	ELKRIDGE	MD
2006-04-28	410-600-0XXX	0000–0999	Assigned	MCC TELEPHONY OF THE MID-ATLANTIC, LLC - MD	861F	BERLIN	MD
2006-04-20	410-690-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	EASTON	MD
2006-04-17	410-557-5XXX	5000–5999	Assigned	BALTIMORE-WASHINGTON TELEPHONE (BWT)	8697	FORK	MD
2006-04-17	410-781-2XXX	2000–2999	Assigned	BALTIMORE-WASHINGTON TELEPHONE (BWT)	8697	ELLICOTTCY	MD
2006-04-17	410-794-5XXX	5000–5999	Assigned	BALTIMORE-WASHINGTON TELEPHONE (BWT)	8697	COLUMBIA	MD
2006-04-17	410-807-4XXX	4000–4999	Assigned	BALTIMORE-WASHINGTON TELEPHONE (BWT)	8697	CATONSVL	MD
2006-04-17	410-861-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WESTMINSTR	MD
2006-04-14	410-861-4XXX	4000–4999	Assigned	PAETEC ITEL, LLC	829J	WESTMINSTR	MD
2006-04-13	410-650-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	DUNDALK	MD
2006-04-13	410-670-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	EDGEWOOD	MD
2006-04-13	410-773-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	COCKEYSVL	MD
2006-04-12	410-775-3XXX	3000–3999	Assigned	BALTIMORE-WASHINGTON TELEPHONE (BWT)	8697	UNION BDG	MD
2006-04-10	410-200-2XXX	2000–2999	Assigned	IDT AMERICA, CORP. - MD	228C	EASTON	MD
2006-04-10	410-226-1XXX	1000–1999	Assigned	IDT AMERICA, CORP. - MD	228C	OXFORD	MD
2006-04-10	410-348-3XXX	3000–3999	Assigned	IDT AMERICA, CORP. - MD	228C	STILL POND	MD
2006-04-10	410-364-3XXX	3000–3999	Assigned	IDT AMERICA, CORP. - MD	228C	HILLSBORO	MD
2006-04-10	410-438-6XXX	6000–6999	Assigned	IDT AMERICA, CORP. - MD	228C	SUDLERSVL	MD
2006-04-10	410-476-6XXX	6000–6999	Assigned	IDT AMERICA, CORP. - MD	228C	TRAPPE	MD
2006-04-10	410-482-3XXX	3000–3999	Assigned	IDT AMERICA, CORP. - MD	228C	GREENSBORO	MD
2006-04-10	410-556-2XXX	2000–2999	Assigned	IDT AMERICA, CORP. - MD	228C	CHURCHHILL	MD
2006-04-10	410-639-4XXX	4000–4999	Assigned	IDT AMERICA, CORP. - MD	228C	ROCK HALL	MD
2006-04-10	410-648-1XXX	1000–1999	Assigned	IDT AMERICA, CORP. - MD	228C	GALENA	MD
2006-04-10	410-745-8XXX	8000–8999	Assigned	IDT AMERICA, CORP. - MD	228C	STMICHAELS	MD
2006-04-10	410-886-1XXX	1000–1999	Assigned	IDT AMERICA, CORP. - MD	228C	TILGHMAN	MD
2006-04-10	410-928-2XXX	2000–2999	Assigned	IDT AMERICA, CORP. - MD	228C	MILLINGTON	MD

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.