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
2008-09-02	443-630-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-09-02	443-630-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-09-02	443-630-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-08-29	443-654-0XXX	0000–0999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-29	443-654-1XXX	1000–1999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-29	443-654-2XXX	2000–2999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-29	443-654-3XXX	3000–3999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-29	443-654-4XXX	4000–4999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-29	443-654-5XXX	5000–5999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-29	443-654-6XXX	6000–6999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-29	443-654-7XXX	7000–7999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-29	443-654-8XXX	8000–8999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-29	443-654-9XXX	9000–9999	Assigned	VERIZON MARYLAND, INC.	9212	WATERLO236	MD
2008-08-27	443-291-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	HAMPSTEAD	MD
2008-08-27	443-578-8XXX	8000–8999	Assigned	PAETEC ITEL, LLC	829J	COCKEYSVL	MD
2008-08-26	443-702-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	ARGRGBSNIS	MD
2008-08-21	443-761-6XXX	6000–6999	Assigned	PAETEC ITEL, LLC	829J	TOWSON	MD
2008-08-21	443-767-7XXX	7000–7999	Assigned	PAETEC ITEL, LLC	829J	WORTHINGTN	MD
2008-08-15	443-412-2XXX	2000–2999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	CHURCHVL	MD
2008-08-15	443-412-3XXX	3000–3999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	CHURCHVL	MD
2008-08-14	443-805-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	GLENBURNIE	MD
2008-08-14	443-805-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	GLENBURNIE	MD
2008-08-11	443-424-0XXX	0000–0999	Assigned	ARMSTRONG TELECOMMUNICATIONS, INC. - MD	420C	CARDIFF	MD
2008-08-11	443-640-6XXX	6000–6999	Assigned	ARMSTRONG TELECOMMUNICATIONS, INC. - MD	420C	BEL AIR	MD
2008-08-11	443-686-3XXX	3000–3999	Assigned	ARMSTRONG TELECOMMUNICATIONS, INC. - MD	420C	FALLSTON	MD
2008-08-04	443-510-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	ANNAPOLIS	MD
2008-08-04	443-859-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	SALISBURY	MD
2008-08-01	443-417-1XXX	1000–1999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	FALLSTON	MD
2008-07-25	443-805-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	GLENBURNIE	MD
2008-07-23	443-529-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-23	443-529-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-23	443-529-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-23	443-529-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-23	443-529-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-23	443-529-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-22	443-492-6XXX	6000–6999	Assigned	PAETEC ITEL, LLC	829J	ELKRIDGE	MD
2008-07-21	443-470-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	TOWSON	MD
2008-07-21	443-630-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-21	443-630-2XXX	2000–2999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-21	443-743-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-21	443-743-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-21	443-743-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-21	443-743-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-21	443-743-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2008-07-17	443-856-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	OCEAN CITY	MD
2008-07-11	443-716-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	ANNAPOLIS	MD
2008-07-08	443-743-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2008-07-08	443-743-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2008-07-03	443-477-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	CAMBRIDGE	MD
2008-07-03	443-510-4XXX	4000–4999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	ANNAPOLIS	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.