Recent thousands-block assignments

17 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 443

ONVOY, LLC - MD 8

NEW CINGULAR WIRELESS PCS, LLC - DC 4

VERSATEL LLC 1

OPENTACT INC. 1

LEVEL 3 COMMUNICATIONS, LLC - MD 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 thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2010-08-06	443-360-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ABERDEEN	MD
2010-08-06	443-764-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	GLENBURNIE	MD
2010-08-06	443-764-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	GLENBURNIE	MD
2010-08-05	443-218-3XXX	3000–3999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WORTHINGTN	MD
2010-08-05	443-261-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	SEVERNA PK	MD
2010-08-05	443-292-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	CROFTON	MD
2010-08-05	443-297-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	ARBUTUS	MD
2010-08-05	443-345-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	ABERDEEN	MD
2010-08-05	443-375-3XXX	3000–3999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	HAMPSTEAD	MD
2010-08-05	443-380-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WOODLAWN	MD
2010-08-05	443-684-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	PRINCEFRCK	MD
2010-08-05	443-712-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	REISTERSTN	MD
2010-08-04	443-300-7XXX	7000–7999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	SYKESVILLE	MD
2010-08-04	443-351-4XXX	4000–4999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	ODENTON	MD
2010-08-04	443-487-6XXX	6000–6999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WESTMINSTR	MD
2010-08-03	443-764-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	GLENBURNIE	MD
2010-07-30	443-379-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PIKESVILLE	MD
2010-07-30	443-692-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2010-07-28	443-853-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2010-07-26	443-261-2XXX	2000–2999	Assigned	PAETEC ITEL, LLC	829J	SEVERNA PK	MD
2010-07-22	443-515-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	CAMBRIDGE	MD
2010-07-21	443-750-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2010-07-21	443-750-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2010-07-19	443-440-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	ANNAPOLIS	MD
2010-07-16	443-832-3XXX	3000–3999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	COLUMBIA	MD
2010-07-16	443-965-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2010-07-14	443-821-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	WESTMINSTR	MD
2010-07-14	443-821-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	WESTMINSTR	MD
2010-07-08	443-221-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	ANNAPOLIS	MD
2010-07-08	443-225-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	CAMBRIDGE	MD
2010-07-07	443-547-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	WESTMINSTR	MD
2010-07-07	443-835-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2010-07-06	443-769-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-769-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-769-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-769-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-769-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-769-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-769-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-769-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-810-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-810-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-810-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-814-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-814-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-814-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-814-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-814-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-814-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2010-07-06	443-876-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BEL AIR	MD

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.