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
2018-06-13	667-238-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	PRESTON	MD
2018-06-13	667-241-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	RIDGELY	MD
2018-06-13	667-241-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	RIDGELY	MD
2018-06-13	667-241-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	RIDGELY	MD
2018-06-13	667-242-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ROCK HALL	MD
2018-06-13	667-242-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ROCK HALL	MD
2018-06-13	667-242-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ROCK HALL	MD
2018-06-13	667-244-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	STILL POND	MD
2018-06-13	667-244-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	STILL POND	MD
2018-06-13	667-244-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	STILL POND	MD
2018-06-13	667-245-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CECILTON	MD
2018-06-13	667-245-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CECILTON	MD
2018-06-13	667-245-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CECILTON	MD
2018-06-13	667-246-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CENTREVL	MD
2018-06-13	667-246-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CENTREVL	MD
2018-06-13	667-246-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CENTREVL	MD
2018-06-13	667-247-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CHESAPKECY	MD
2018-06-13	667-247-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CHESAPKECY	MD
2018-06-13	667-247-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CHESAPKECY	MD
2018-06-13	667-248-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	DENTON	MD
2018-06-13	667-248-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	DENTON	MD
2018-06-13	667-248-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	DENTON	MD
2018-06-13	667-249-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	GALENA	MD
2018-06-13	667-249-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	GALENA	MD
2018-06-13	667-249-2XXX	2000–2999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	GALENA	MD
2018-06-13	667-777-3XXX	3000–3999	Assigned	METROPCS, INC.	5562	SEVERNA PK	MD
2018-06-06	667-243-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	OXFORD	MD
2018-06-06	667-243-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	OXFORD	MD
2018-06-06	667-243-7XXX	7000–7999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	OXFORD	MD
2018-06-06	667-345-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CATONSVL	MD
2018-06-06	667-345-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CATONSVL	MD
2018-06-06	667-345-6XXX	6000–6999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	CATONSVL	MD
2018-06-06	667-364-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	STEVENSVL	MD
2018-06-06	667-364-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	STEVENSVL	MD
2018-06-06	667-364-4XXX	4000–4999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	STEVENSVL	MD
2018-06-06	667-866-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	DARLINGTON	MD
2018-06-06	667-866-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	DARLINGTON	MD
2018-06-06	667-866-4XXX	4000–4999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	DARLINGTON	MD
2018-06-05	667-300-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	COLUMBIA	MD
2018-06-05	667-300-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	COLUMBIA	MD
2018-06-05	667-300-3XXX	3000–3999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	COLUMBIA	MD
2018-06-04	667-235-0XXX	0000–0999	Assigned	VONAGE AMERICA LLC	197D	SALISBURY	MD
2018-06-04	667-336-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	BEL AIR	MD
2018-06-04	667-336-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	BEL AIR	MD
2018-06-04	667-336-8XXX	8000–8999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	BEL AIR	MD
2018-06-04	667-500-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-06-04	667-500-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-06-04	667-500-5XXX	5000–5999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	ANNAPOLIS	MD
2018-06-01	667-277-0XXX	0000–0999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	SHERWD FOR	MD
2018-06-01	667-277-1XXX	1000–1999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	SHERWD FOR	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.