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
2006-08-14	443-225-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	CAMBRIDGE	MD
2006-08-14	443-763-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	GLENBURNIE	MD
2006-08-09	443-249-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	STEVENSVL	MD
2006-08-04	443-539-4XXX	4000–4999	Assigned	PAETEC ITEL, LLC	829J	COLUMBIA	MD
2006-08-04	443-935-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-08-04	443-935-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-08-03	443-988-8XXX	8000–8999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	CENTREVL	MD
2006-08-02	443-597-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	SEVERNA PK	MD
2006-07-28	443-965-2XXX	2000–2999	Assigned	VERIZON MARYLAND, INC.	9212	BALTIMORE	MD
2006-07-26	443-231-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ESSEX	MD
2006-07-25	443-200-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	WOODLAWN	MD
2006-07-25	443-200-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	WOODLAWN	MD
2006-07-25	443-567-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	BEL AIR	MD
2006-07-25	443-567-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	BEL AIR	MD
2006-07-21	443-763-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	GLENBURNIE	MD
2006-07-21	443-824-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-07-21	443-824-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-07-21	443-824-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-07-21	443-824-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOWSON	MD
2006-07-19	443-609-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	SYKESVILLE	MD
2006-07-18	443-224-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2006-07-17	443-404-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	SOLOMONS	MD
2006-07-17	443-823-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	TOWSON	MD
2006-07-17	443-876-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BEL AIR	MD
2006-07-17	443-986-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2006-07-11	443-213-1XXX	1000–1999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PIKESVILLE	MD
2006-07-11	443-218-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WORTHINGTN	MD
2006-07-06	443-205-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	CAMBRIDGE	MD
2006-07-06	443-388-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2006-07-06	443-388-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2006-07-06	443-605-7XXX	7000–7999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	WESTMINSTR	MD
2006-07-06	443-624-6XXX	6000–6999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	PRINCEFRCK	MD
2006-07-06	443-624-9XXX	9000–9999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	PRINCEFRCK	MD
2006-07-06	443-869-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	BALTIMORE	MD
2006-07-06	443-883-0XXX	0000–0999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	GLENBURNIE	MD
2006-07-05	443-292-1XXX	1000–1999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	CROFTON	MD
2006-07-05	443-295-2XXX	2000–2999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	PRINCEFRCK	MD
2006-07-05	443-964-2XXX	2000–2999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	NORTHBEACH	MD
2006-07-03	443-293-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	WESTMINSTR	MD
2006-07-03	443-968-3XXX	3000–3999	Assigned	PAETEC ITEL, LLC	829J	PRINCEFRCK	MD
2006-06-30	443-949-0XXX	0000–0999	Assigned	COMCAST IP PHONE, LLC	318J	ANNAPOLIS	MD
2006-06-26	443-388-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2006-06-26	443-388-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2006-06-26	443-388-9XXX	9000–9999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2006-06-22	443-965-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2006-06-21	443-224-2XXX	2000–2999	Assigned	PAETEC ITEL, LLC	829J	BALTIMORE	MD
2006-06-20	443-225-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	CAMBRIDGE	MD
2006-06-20	443-234-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	SNOW HILL	MD
2006-06-20	443-323-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	SHARPTOWN	MD
2006-06-20	443-359-5XXX	5000–5999	Assigned	COMCAST IP PHONE, LLC	318J	DELMAR	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.