Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 830

LEVEL 3 COMMUNICATIONS, LLC - TX 25

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 NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2023-09-12	830-412	1XXX2XXX8XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	KERRVILLE	TX
2021-01-11	830-247	1XXX2XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	TARPLEY	TX
2020-09-03	830-288	2XXX6XXX8XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	CENTER PT	TX
2020-09-03	830-314	1XXX2XXX6XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	COMFORT	TX
2003-11-05	830-246	1XXX2XXX6XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	MEDINA	TX
2002-04-22	830-299	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	KENEDY	TX
2002-04-22	830-428	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	BOERNE	TX
2002-03-28	830-255	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	CARRIZOSPG	TX
2002-03-28	830-261	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	UVALDE	TX
2002-03-28	830-265	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	MARBLE FLS	TX
2002-03-28	830-266	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	LYTLE	TX
2002-03-28	830-267	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	PEARSALL	TX
2002-03-28	830-268	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	PLEASANTON	TX
2002-03-28	830-443	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	BOERNE	TX
2002-03-28	830-455	0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	DEVINE	TX
2002-03-28	830-483	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	COTULLA	TX
2002-03-28	830-522	0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	BANDERA	TX
2002-03-28	830-584	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	HONDO	TX
2001-06-20	830-461	0–9 XXXall 10 · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	DEL RIO	TX
2001-05-11	830-715	1XXX2XXX4XXX5XXX7XXX8XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	LACOSTE	TX
—	830-355	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	CASTROVL	TX
—	830-392	0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	BLANCO	TX
—	830-515	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	NEWBRANFLS	TX
—	830-541	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	DEVINE	TX
—	830-549	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	SEGUIN	TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.