Recent thousands-block assignments

70 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 667

NEW CINGULAR WIRELESS PCS, LLC - DC 38

ONVOY, LLC - MD 18

BANDWIDTH.COM CLEC, LLC - MD 6

METROPCS, INC. 2

INTRADO COMMUNICATIONS, LLC 2

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
2014-04-17	667-208-1XXX	1000–1999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-17	667-208-2XXX	2000–2999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-17	667-208-3XXX	3000–3999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-17	667-208-4XXX	4000–4999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-17	667-208-5XXX	5000–5999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-17	667-208-8XXX	8000–8999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-17	667-208-9XXX	9000–9999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-17	667-401-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2014-04-16	667-205-4XXX	4000–4999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-16	667-205-5XXX	5000–5999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-16	667-205-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-16	667-205-7XXX	7000–7999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-16	667-205-8XXX	8000–8999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-04-02	667-303-3XXX	3000–3999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2014-02-25	667-214-1XXX	1000–1999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	BALTIMORE	MD
2014-02-20	667-309-6XXX	6000–6999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2014-02-20	667-309-7XXX	7000–7999	Assigned	COMCAST IP PHONE, LLC	318J	BALTIMORE	MD
2014-01-29	667-208-6XXX	6000–6999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-01-29	667-208-7XXX	7000–7999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MD	7325	BALTIMORE	MD
2014-01-29	667-401-0XXX	0000–0999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2014-01-13	667-231-6XXX	6000–6999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ABERDEEN	MD
2014-01-13	667-231-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ABERDEEN	MD
2014-01-07	667-303-2XXX	2000–2999	Assigned	NUSO, LLC	551G	BALTIMORE	MD
2013-11-27	667-206-8XXX	8000–8999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	TOWSON	MD
2013-11-27	667-207-1XXX	1000–1999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2013-11-27	667-207-3XXX	3000–3999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2013-11-27	667-207-4XXX	4000–4999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2013-11-27	667-207-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	BALTIMORE	MD
2013-11-22	667-205-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	BALTIMORE	MD
2013-10-22	667-307-4XXX	4000–4999	Assigned	COMCAST IP PHONE, LLC	318J	CROFTON	MD
2013-09-06	667-207-2XXX	2000–2999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2013-08-23	667-206-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	TOWSON	MD
2013-08-21	667-231-0XXX	0000–0999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ABERDEEN	MD
2013-08-21	667-231-5XXX	5000–5999	Assigned	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	ABERDEEN	MD
2013-08-20	667-803-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	SOLOMONS	MD
2013-08-12	667-308-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	TOWSON	MD
2013-08-07	667-231-7XXX	7000–7999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	ABERDEEN	MD
2013-08-07	667-309-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	BALTIMORE	MD
2013-08-05	667-207-7XXX	7000–7999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	BALTIMORE	MD
2013-08-05	667-308-7XXX	7000–7999	Assigned	CENTURYLINK COMMUNICATIONS, LLC	508J	TOWSON	MD
2013-07-19	667-206-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	TOWSON	MD
2013-07-12	667-308-2XXX	2000–2999	Assigned	COMCAST IP PHONE, LLC	318J	TOWSON	MD
2013-07-02	667-308-4XXX	4000–4999	Assigned	METROPCS, INC.	5562	TOWSON	MD
2013-07-02	667-308-5XXX	5000–5999	Assigned	METROPCS, INC.	5562	TOWSON	MD
2013-07-02	667-308-6XXX	6000–6999	Assigned	METROPCS, INC.	5562	TOWSON	MD
2013-06-21	667-401-8XXX	8000–8999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MD	6119	BALTIMORE	MD
2013-05-15	667-305-1XXX	1000–1999	Assigned	NUSO, LLC	551G	PIKESVILLE	MD
2013-04-12	667-307-0XXX	0000–0999	Assigned	PEERLESS NETWORK OF MARYLAND, LLC	568G	CROFTON	MD
2013-04-12	667-307-1XXX	1000–1999	Assigned	PEERLESS NETWORK OF MARYLAND, LLC	568G	CROFTON	MD
2013-03-13	667-253-1XXX	1000–1999	Assigned	NUSO, LLC	551G	SALISBURY	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.