Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/23/2026

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, all time — NPA 410

IDT AMERICA, CORP. - MD 18

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
2012-06-11	410-755-0XXX	0000–0999	Assigned	IDT AMERICA, CORP. - MD	228C	WARWICK	MD
2012-05-02	410-634-4XXX	4000–4999	Assigned	IDT AMERICA, CORP. - MD	228C	RIDGELY	MD
2011-12-07	410-885-7XXX	7000–7999	Assigned	IDT AMERICA, CORP. - MD	228C	CHESAPKECY	MD
2011-11-09	410-618-2XXX	2000–2999	Assigned	IDT AMERICA, CORP. - MD	228C	PERRYVILLE	MD
2006-04-10	410-200-2XXX	2000–2999	Assigned	IDT AMERICA, CORP. - MD	228C	EASTON	MD
2006-04-10	410-226-1XXX	1000–1999	Assigned	IDT AMERICA, CORP. - MD	228C	OXFORD	MD
2006-04-10	410-348-3XXX	3000–3999	Assigned	IDT AMERICA, CORP. - MD	228C	STILL POND	MD
2006-04-10	410-364-3XXX	3000–3999	Assigned	IDT AMERICA, CORP. - MD	228C	HILLSBORO	MD
2006-04-10	410-438-6XXX	6000–6999	Assigned	IDT AMERICA, CORP. - MD	228C	SUDLERSVL	MD
2006-04-10	410-476-6XXX	6000–6999	Assigned	IDT AMERICA, CORP. - MD	228C	TRAPPE	MD
2006-04-10	410-482-3XXX	3000–3999	Assigned	IDT AMERICA, CORP. - MD	228C	GREENSBORO	MD
2006-04-10	410-556-2XXX	2000–2999	Assigned	IDT AMERICA, CORP. - MD	228C	CHURCHHILL	MD
2006-04-10	410-639-4XXX	4000–4999	Assigned	IDT AMERICA, CORP. - MD	228C	ROCK HALL	MD
2006-04-10	410-648-1XXX	1000–1999	Assigned	IDT AMERICA, CORP. - MD	228C	GALENA	MD
2006-04-10	410-745-8XXX	8000–8999	Assigned	IDT AMERICA, CORP. - MD	228C	STMICHAELS	MD
2006-04-10	410-886-1XXX	1000–1999	Assigned	IDT AMERICA, CORP. - MD	228C	TILGHMAN	MD
2006-04-10	410-928-2XXX	2000–2999	Assigned	IDT AMERICA, CORP. - MD	228C	MILLINGTON	MD
2006-04-05	410-304-2XXX	2000–2999	Assigned	IDT AMERICA, CORP. - MD	228C	QUEENSTOWN	MD

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.