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
2007-09-10	443-708-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2007-09-05	443-477-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	CAMBRIDGE	MD
2007-09-05	443-487-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	WESTMINSTR	MD
2007-09-05	443-686-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	FALLSTON	MD
2007-09-04	443-615-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-09-04	443-615-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-08-29	443-352-0XXX	0000–0999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	PIKESVILLE	MD
2007-08-28	443-602-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2007-08-22	443-466-2XXX	2000–2999	Assigned	METROPCS, INC.	5562	ELKTON	MD
2007-08-14	443-683-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2007-08-14	443-683-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2007-08-14	443-683-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2007-08-14	443-683-7XXX	7000–7999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2007-08-14	443-798-7XXX	7000–7999	Assigned	PAETEC ITEL, LLC	829J	TOWSON	MD
2007-08-14	443-929-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	PIKESVILLE	MD
2007-08-10	443-536-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	WESTMINSTR	MD
2007-08-10	443-536-7XXX	7000–7999	Assigned	METROPCS, INC.	5562	WESTMINSTR	MD
2007-08-10	443-938-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-08-10	443-938-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-08-10	443-938-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-08-10	443-938-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-08-02	443-542-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	COLUMBIA	MD
2007-08-02	443-566-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	CHESAPKECY	MD
2007-08-02	443-683-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-08-02	443-683-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-08-02	443-683-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2007-08-02	443-752-5XXX	5000–5999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BEL AIR	MD
2007-08-02	443-752-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BEL AIR	MD
2007-08-02	443-752-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BEL AIR	MD
2007-08-02	443-875-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	ANNAPOLIS	MD
2007-08-01	443-275-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	TOWSON	MD
2007-08-01	443-352-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	PIKESVILLE	MD
2007-08-01	443-352-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	PIKESVILLE	MD
2007-08-01	443-376-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DUNDALK	MD
2007-08-01	443-458-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	ANNAPOLIS	MD
2007-08-01	443-636-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	CATONSVL	MD
2007-08-01	443-859-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	SALISBURY	MD
2007-07-31	443-546-2XXX	2000–2999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	COLUMBIA	MD
2007-07-27	443-232-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	WILLARDS	MD
2007-07-27	443-233-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	VIENNA	MD
2007-07-27	443-281-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	COCKEYSVL	MD
2007-07-27	443-727-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	BISHOPVL	MD
2007-07-26	443-471-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PIKESVILLE	MD
2007-07-26	443-480-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CHESTERTN	MD
2007-07-25	443-895-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2007-07-25	443-895-3XXX	3000–3999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2007-07-25	443-895-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2007-07-25	443-895-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2007-07-25	443-895-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2007-07-25	443-895-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	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.