Thousands-blocks in 410-824

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 410-824 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 410 blocks

Most active assignees, all time — NPA 410

CORE COMMUNICATIONS, INC.- MD 2

YMAX COMMUNICATIONS CORP. - MD 1

TELNYX LLC 1

PAETEC ITEL, LLC 1

ONVOY, 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
2020-12-21	410-824-0XXX	0000–0999	Assigned	NUSO, LLC	478J	WATERLO236	MD
2010-08-04	410-824-1XXX	1000–1999	Assigned	BANDWIDTH.COM CLEC, LLC - MD	071F	WATERLO236	MD
2006-09-14	410-824-2XXX	2000–2999	Assigned	PAETEC ITEL, LLC	829J	WATERLO236	MD
2019-04-12	410-824-3XXX	3000–3999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	WATERLO236	MD
2009-01-05	410-824-4XXX	4000–4999	Assigned	YMAX COMMUNICATIONS CORP. - MD	281E	WATERLO236	MD
2022-09-21	410-824-5XXX	5000–5999	Assigned	ONVOY, LLC - MD	876D	WATERLO236	MD
2019-04-12	410-824-6XXX	6000–6999	Assigned	CORE COMMUNICATIONS, INC.- MD	2593	WATERLO236	MD
—	410-824-7XXX	7000–7999	Reserved	LEVEL 3 TELECOM OF MARYLAND, LLC - MD	7591	WATERLO236	MD
2011-12-01	410-824-8XXX	8000–8999	Assigned	COMCAST IP PHONE, LLC	318J	WATERLO236	MD
2023-07-14	410-824-9XXX	9000–9999	Assigned	TELNYX LLC	073H	WATERLO236	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.