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
2008-03-05	443-510-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	ANNAPOLIS	MD
2008-03-05	443-545-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	COLUMBIA	MD
2008-03-05	443-987-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BEL AIR	MD
2008-03-03	443-365-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	SALISBURY	MD
2008-03-03	443-460-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ESSEX	MD
2008-03-03	443-636-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	CATONSVL	MD
2008-02-28	443-912-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2008-02-26	443-964-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	NORTHBEACH	MD
2008-02-19	443-302-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	CROFTON	MD
2008-02-15	443-898-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	PIKESVILLE	MD
2008-02-14	443-274-0XXX	0000–0999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	SEVERN	MD
2008-02-13	443-669-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	DELMAR	MD
2008-02-13	443-669-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	DELMAR	MD
2008-02-11	443-293-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	WESTMINSTR	MD
2008-02-11	443-942-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	SEVERNA PK	MD
2008-02-08	443-823-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2008-02-08	443-823-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2008-02-05	443-477-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	CAMBRIDGE	MD
2008-02-05	443-487-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	WESTMINSTR	MD
2008-02-05	443-752-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BEL AIR	MD
2008-02-05	443-859-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	SALISBURY	MD
2008-02-05	443-859-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	SALISBURY	MD
2008-02-05	443-934-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2008-02-05	443-934-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2008-02-05	443-934-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2008-02-05	443-934-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2008-02-05	443-934-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2008-02-05	443-934-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2008-02-05	443-934-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2008-02-05	443-945-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	ELKTON	MD
2008-02-05	443-962-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	GLENBURNIE	MD
2008-02-05	443-975-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	PRINCEFRCK	MD
2008-02-05	443-988-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	CENTREVL	MD
2008-02-01	443-275-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	TOWSON	MD
2008-02-01	443-295-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	PRINCEFRCK	MD
2008-02-01	443-486-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	PRINCEFRCK	MD
2008-02-01	443-539-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	COLUMBIA	MD
2008-02-01	443-962-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	GLENBURNIE	MD
2008-01-31	443-302-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	CROFTON	MD
2008-01-31	443-492-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	ELKRIDGE	MD
2008-01-31	443-492-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	ELKRIDGE	MD
2008-01-30	443-312-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	BRYNPKLNCM	MD
2008-01-30	443-616-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BEL AIR	MD
2008-01-29	443-759-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2008-01-22	443-316-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	WOODLAWN	MD
2008-01-22	443-371-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BEL AIR	MD
2008-01-22	443-759-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2008-01-22	443-759-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2008-01-22	443-759-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2008-01-22	443-759-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	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.