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
2006-12-14	443-825-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2006-12-05	443-823-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	TOWSON	MD
2006-12-05	443-883-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	GLENBURNIE	MD
2006-12-05	443-896-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	COLUMBIA	MD
2006-12-05	443-944-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	SALISBURY	MD
2006-12-05	443-974-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	WESTMINSTR	MD
2006-12-05	443-977-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2006-12-05	443-988-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	CENTREVL	MD
2006-11-30	443-292-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	CROFTON	MD
2006-11-30	443-825-9XXX	9000–9999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2006-11-29	443-725-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	PARKVILLE	MD
2006-11-29	443-725-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	PARKVILLE	MD
2006-11-29	443-969-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	ESSEX	MD
2006-11-29	443-969-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	ESSEX	MD
2006-11-28	443-303-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	ABERDEEN	MD
2006-11-28	443-532-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	PRINCEFRCK	MD
2006-11-16	443-607-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	WEST RIVER	MD
2006-11-16	443-708-0XXX	0000–0999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2006-11-16	443-708-1XXX	1000–1999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2006-11-16	443-708-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2006-11-16	443-708-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2006-11-16	443-708-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2006-11-16	443-708-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2006-11-16	443-817-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	ARGRGBSNIS	MD
2006-11-15	443-860-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	CATONSVL	MD
2006-11-14	443-922-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	EDGEWOOD	MD
2006-11-14	443-922-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	EDGEWOOD	MD
2006-11-14	443-949-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	ANNAPOLIS	MD
2006-11-14	443-949-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	ANNAPOLIS	MD
2006-11-14	443-949-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	ANNAPOLIS	MD
2006-11-13	443-642-2XXX	2000–2999	Assigned	VERIZON MARYLAND, INC.	9212	BALTIMORE	MD
2006-11-13	443-642-3XXX	3000–3999	Assigned	VERIZON MARYLAND, INC.	9212	BALTIMORE	MD
2006-11-13	443-642-4XXX	4000–4999	Assigned	VERIZON MARYLAND, INC.	9212	BALTIMORE	MD
2006-11-13	443-642-5XXX	5000–5999	Assigned	VERIZON MARYLAND, INC.	9212	BALTIMORE	MD
2006-11-13	443-642-6XXX	6000–6999	Assigned	VERIZON MARYLAND, INC.	9212	BALTIMORE	MD
2006-11-10	443-642-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2006-11-09	443-977-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2006-11-09	443-977-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2006-11-03	443-909-7XXX	7000–7999	Assigned	PAETEC ITEL, LLC	829J	BALTIMORE	MD
2006-11-01	443-823-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-11-01	443-823-3XXX	3000–3999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-11-01	443-823-4XXX	4000–4999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-11-01	443-823-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-11-01	443-823-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-10-17	443-847-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	TOWSON	MD
2006-10-17	443-977-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2006-10-12	443-575-4XXX	4000–4999	Assigned	PAETEC ITEL, LLC	829J	ARBUTUS	MD
2006-10-06	443-986-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2006-10-05	443-482-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	ANNAPOLIS	MD
2006-10-05	443-482-6XXX	6000–6999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	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.