Recent thousands-block assignments

17 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 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
2007-02-06	443-977-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-02-06	443-977-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-02-02	443-559-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ESSEX	MD
2007-01-23	443-303-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	ABERDEEN	MD
2007-01-19	443-248-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-01-19	443-477-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	CAMBRIDGE	MD
2007-01-12	443-406-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ELKTON	MD
2007-01-12	443-406-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ELKTON	MD
2007-01-12	443-489-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	CHASE	MD
2007-01-10	443-535-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	COLUMBIA	MD
2007-01-10	443-627-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2007-01-10	443-627-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2007-01-10	443-627-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2007-01-10	443-929-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	PIKESVILLE	MD
2007-01-10	443-964-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	NORTHBEACH	MD
2007-01-09	443-542-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	COLUMBIA	MD
2007-01-09	443-609-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	SYKESVILLE	MD
2007-01-09	443-627-2XXX	2000–2999	Assigned	PAETEC ITEL, LLC	829J	BALTIMORE	MD
2007-01-09	443-671-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	NEWWINDSOR	MD
2007-01-09	443-732-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	SILVER RUN	MD
2007-01-09	443-820-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	ELKRIDGE	MD
2007-01-09	443-918-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	TANEYTOWN	MD
2007-01-09	443-937-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	UNION BDG	MD
2007-01-09	443-975-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	PRINCEFRCK	MD
2007-01-08	443-204-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PIKESVILLE	MD
2007-01-08	443-204-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PIKESVILLE	MD
2007-01-04	443-542-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	COLUMBIA	MD
2007-01-04	443-617-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	FALLSTON	MD
2007-01-04	443-847-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	TOWSON	MD
2007-01-04	443-944-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	SALISBURY	MD
2007-01-04	443-974-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	WESTMINSTR	MD
2006-12-28	443-944-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	SALISBURY	MD
2006-12-28	443-944-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	SALISBURY	MD
2006-12-20	443-627-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2006-12-20	443-682-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2006-12-20	443-822-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ANNAPOLIS	MD
2006-12-20	443-852-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ANNAPOLIS	MD
2006-12-19	443-572-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	GLENBURNIE	MD
2006-12-19	443-597-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	SEVERNA PK	MD
2006-12-19	443-597-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	SEVERNA PK	MD
2006-12-19	443-597-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	SEVERNA PK	MD
2006-12-19	443-597-7XXX	7000–7999	Assigned	METROPCS, INC.	5562	SEVERNA PK	MD
2006-12-19	443-789-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	WESTMINSTR	MD
2006-12-19	443-789-7XXX	7000–7999	Assigned	METROPCS, INC.	5562	WESTMINSTR	MD
2006-12-19	443-825-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2006-12-19	443-825-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2006-12-18	443-926-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	ANNAPOLIS	MD
2006-12-15	443-752-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BEL AIR	MD
2006-12-15	443-881-2XXX	2000–2999	Assigned	PAETEC ITEL, LLC	829J	REISTERSTN	MD
2006-12-14	443-825-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	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.