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
2010-02-16	410-449-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	SOLOMONS	MD
2010-02-12	410-891-4XXX	4000–4999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	COCKEYSVL	MD
2010-01-26	410-205-5XXX	5000–5999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	PIKESVILLE	MD
2010-01-26	410-205-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	PIKESVILLE	MD
2010-01-26	410-357-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	PARKTON	MD
2010-01-26	410-417-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	EDGEWOOD	MD
2010-01-26	410-429-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WORTHINGTN	MD
2010-01-26	410-575-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	FORK	MD
2010-01-26	410-635-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	NEWWINDSOR	MD
2010-01-26	410-656-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	NORTH EAST	MD
2010-01-26	410-774-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	CROFTON	MD
2010-01-26	410-775-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	UNION BDG	MD
2010-01-26	410-793-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	SEVERNA PK	MD
2010-01-26	410-871-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WESTMINSTR	MD
2010-01-26	410-881-3XXX	3000–3999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	SHERWD FOR	MD
2010-01-26	410-914-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	CHURCHVL	MD
2010-01-26	410-921-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	SEVERN	MD
2010-01-26	410-941-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	JARRETTSVL	MD
2010-01-05	410-635-7XXX	7000–7999	Assigned	PAETEC ITEL, LLC	829J	NEWWINDSOR	MD
2010-01-05	410-779-4XXX	4000–4999	Assigned	PAETEC ITEL, LLC	829J	BALTIMORE	MD
2009-12-23	410-317-6XXX	6000–6999	Assigned	PAETEC ITEL, LLC	829J	ARGRGBSNIS	MD
2009-12-23	410-604-5XXX	5000–5999	Assigned	PAETEC ITEL, LLC	829J	STEVENSVL	MD
2009-12-03	410-305-9XXX	9000–9999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	ODENTON	MD
2009-11-27	410-717-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	ELKRIDGE	MD
2009-11-27	410-717-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	ELKRIDGE	MD
2009-10-15	410-660-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	ELKRIDGE	MD
2009-10-15	410-660-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	ELKRIDGE	MD
2009-10-02	410-443-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	EASTON	MD
2009-09-30	410-858-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	ANNAPOLIS	MD
2009-09-29	410-305-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	ODENTON	MD
2009-09-29	410-696-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	ELLICOTTCY	MD
2009-09-15	410-680-6XXX	6000–6999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	ELLICOTTCY	MD
2009-09-15	410-885-8XXX	8000–8999	Assigned	PAETEC ITEL, LLC	829J	CHESAPKECY	MD
2009-09-14	410-929-8XXX	8000–8999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	BALTIMORE	MD
2009-09-14	410-929-9XXX	9000–9999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	BALTIMORE	MD
2009-09-09	410-957-8XXX	8000–8999	Assigned	PAETEC ITEL, LLC	829J	POCOMOKE	MD
2009-09-03	410-443-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	EASTON	MD
2009-08-28	410-205-2XXX	2000–2999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PIKESVILLE	MD
2009-08-10	410-702-6XXX	6000–6999	Assigned	PAETEC ITEL, LLC	829J	REISTERSTN	MD
2009-08-10	410-975-6XXX	6000–6999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	SEVERNA PK	MD
2009-08-05	410-929-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2009-08-03	410-690-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	EASTON	MD
2009-07-02	410-443-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	EASTON	MD
2009-06-11	410-390-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	OCEAN CITY	MD
2009-04-28	410-656-5XXX	5000–5999	Assigned	PAETEC ITEL, LLC	829J	NORTH EAST	MD
2009-04-10	410-565-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	ARBUTUS	MD
2009-04-02	410-701-6XXX	6000–6999	Assigned	PAETEC ITEL, LLC	829J	RANDALLSTN	MD
2009-03-12	410-214-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	RISING SUN	MD
2009-03-04	410-443-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	EASTON	MD
2009-02-25	410-870-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	PARKVILLE	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.