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
2018-12-12	667-843-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	DEALISLAND	MD
2018-12-12	667-843-8XXX	8000–8999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	DEALISLAND	MD
2018-11-26	667-281-9XXX	9000–9999	Assigned	PEERLESS NETWORK OF MARYLAND, LLC	568G	SALISBURY	MD
2018-11-15	667-257-0XXX	0000–0999	Assigned	VONAGE AMERICA LLC	197D	COLUMBIA	MD
2018-11-15	667-257-1XXX	1000–1999	Assigned	VONAGE AMERICA LLC	197D	COLUMBIA	MD
2018-11-15	667-257-2XXX	2000–2999	Assigned	VONAGE AMERICA LLC	197D	COLUMBIA	MD
2018-11-15	667-257-3XXX	3000–3999	Assigned	VONAGE AMERICA LLC	197D	COLUMBIA	MD
2018-11-15	667-258-0XXX	0000–0999	Assigned	AIRESPRING, INC.	996H	BALTIMORE	MD
2018-11-12	667-300-2XXX	2000–2999	Assigned	VONAGE AMERICA LLC	197D	COLUMBIA	MD
2018-11-12	667-300-4XXX	4000–4999	Assigned	VONAGE AMERICA LLC	197D	COLUMBIA	MD
2018-11-12	667-300-5XXX	5000–5999	Assigned	VONAGE AMERICA LLC	197D	COLUMBIA	MD
2018-11-12	667-300-6XXX	6000–6999	Assigned	VONAGE AMERICA LLC	197D	COLUMBIA	MD
2018-11-12	667-300-7XXX	7000–7999	Assigned	VONAGE AMERICA LLC	197D	COLUMBIA	MD
2018-11-05	667-312-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD	7228	BALTIMORE	MD
2018-10-24	667-267-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-267-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-267-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-267-3XXX	3000–3999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-267-4XXX	4000–4999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-267-5XXX	5000–5999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-267-6XXX	6000–6999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-267-7XXX	7000–7999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-267-8XXX	8000–8999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-267-9XXX	9000–9999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-24	667-500-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD	6395	ANNAPOLIS	MD
2018-10-22	667-364-2XXX	2000–2999	Assigned	PEERLESS NETWORK OF MARYLAND, LLC	568G	STEVENSVL	MD
2018-10-19	667-295-2XXX	2000–2999	Assigned	PEERLESS NETWORK OF MARYLAND, LLC	568G	CROFTON	MD
2018-10-19	667-362-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-362-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-362-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-362-3XXX	3000–3999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-362-4XXX	4000–4999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-362-5XXX	5000–5999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-362-6XXX	6000–6999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-362-7XXX	7000–7999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-362-8XXX	8000–8999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-362-9XXX	9000–9999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-473-2XXX	2000–2999	Assigned	PEERLESS NETWORK OF MARYLAND, LLC	568G	SOLOMONS	MD
2018-10-19	667-627-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-627-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-627-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-627-3XXX	3000–3999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-627-4XXX	4000–4999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-627-5XXX	5000–5999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-627-6XXX	6000–6999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-627-7XXX	7000–7999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-627-8XXX	8000–8999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-627-9XXX	9000–9999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-10-19	667-686-6XXX	6000–6999	Assigned	PEERLESS NETWORK OF MARYLAND, LLC	568G	ELLICOTTCY	MD
2018-10-19	667-876-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	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.