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 337

IP HORIZON LLC 35

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
2024-04-05	337-218-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	JENNINGS	LA
2024-04-05	337-245-4XXX	4000–4999	Assigned	IP HORIZON LLC	515J	SWEET LAKE	LA
2024-04-05	337-341-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	STMARTINVL	LA
2024-04-05	337-343-2XXX	2000–2999	Assigned	IP HORIZON LLC	515J	DE RIDDER	LA
2024-04-05	337-352-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	NEW IBERIA	LA
2024-04-05	337-361-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	ERATH	LA
2024-04-05	337-397-6XXX	6000–6999	Assigned	IP HORIZON LLC	515J	LEESVILLE	LA
2024-04-05	337-471-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	FRANKLIN	LA
2024-04-05	337-539-5XXX	5000–5999	Assigned	IP HORIZON LLC	515J	GUEYDAN	LA
2024-04-05	337-548-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	LAKEARTHUR	LA
2024-04-05	337-566-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	KROTZ SPG	LA
2024-04-05	337-575-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	VINTON	LA
2024-04-05	337-576-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	EUNICE	LA
2024-04-05	337-586-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	WEEKS IS	LA
2024-04-05	337-613-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	MELVILLE	LA
2024-04-05	337-617-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	MERRYVILLE	LA
2024-04-05	337-634-5XXX	5000–5999	Assigned	IP HORIZON LLC	515J	LK CHARLES	LA
2024-04-05	337-637-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	RAYNE	LA
2024-04-05	337-674-7XXX	7000–7999	Assigned	IP HORIZON LLC	515J	SULPHUR	LA
2024-04-05	337-690-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	LEONVILLE	LA
2024-04-05	337-691-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	PORT BARRE	LA
2024-04-05	337-730-5XXX	5000–5999	Assigned	IP HORIZON LLC	515J	OPELOUSAS	LA
2024-04-05	337-748-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	WASHINGTON	LA
2024-04-05	337-766-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	LAWTELL	LA
2024-04-05	337-803-2XXX	2000–2999	Assigned	IP HORIZON LLC	515J	DUSON	LA
2024-04-05	337-846-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	JEANERETTE	LA
2024-04-05	337-858-3XXX	3000–3999	Assigned	IP HORIZON LLC	515J	YOUNGSVL	LA
2024-04-05	337-904-9XXX	9000–9999	Assigned	IP HORIZON LLC	515J	LOREAUVL	LA
2024-04-03	337-651-3XXX	3000–3999	Assigned	IP HORIZON LLC	515J	CROWLEY	LA
2024-03-29	337-757-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	CARENCRO	LA
2024-03-28	337-590-0XXX	0000–0999	Assigned	IP HORIZON LLC	515J	ABBEVILLE	LA
2024-03-28	337-742-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	BALDWIN	LA
2024-03-28	337-773-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	BROUSSARD	LA
2024-03-28	337-946-8XXX	8000–8999	Assigned	IP HORIZON LLC	515J	CENTERVL	LA
2021-04-02	337-554-1XXX	1000–1999	Assigned	IP HORIZON LLC	515J	LAFAYETTE	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.