Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 225

IP HORIZON LLC 21

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
2024-03-29	225-528-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	LUTCHER	LA
2024-03-28	225-393-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	TUNICA	LA
2024-03-27	225-233-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	DENHAM SPG	LA
2024-03-27	225-340-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	WILSON	LA
2024-03-27	225-345-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	JACKSON	LA
2024-03-27	225-370-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	PLAQUEMINE	LA
2024-03-27	225-375-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	ROUGON	LA
2024-03-27	225-466-4XXX	4000–4999	Assigned	IP HORIZON LLC	515J	STFRNCISVL	LA
2024-03-27	225-496-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	DONALDSNVL	LA
2024-03-27	225-509-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	WH CASTLE	LA
2024-03-27	225-514-3XXX	3000–3999	Assigned	IP HORIZON LLC	515J	LIVINGSTON	LA
2024-03-27	225-516-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	CONVENT	LA
2024-03-27	225-517-5XXX	5000–5999	Assigned	IP HORIZON LLC	515J	ST GABRIEL	LA
2024-03-27	225-524-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	CLINTON	LA
2024-03-27	225-531-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	SPRINGFLD	LA
2024-03-27	225-592-4XXX	4000–4999	Assigned	IP HORIZON LLC	515J	ZACHARY	LA
2024-03-27	225-624-3XXX	3000–3999	Assigned	IP HORIZON LLC	515J	VACHERIE	LA
2024-03-27	225-832-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	NEW ROADS	LA
2024-03-27	225-837-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	MORGANZA	LA
2024-03-22	225-519-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	ALBANY	LA
2021-04-02	225-409-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	BATONROUGE	LA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.