Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 812

AT&T ENTERPRISES, LLC 11

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
2011-08-17	812-286	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	NEWWSHNGTN	IN
2011-08-12	812-370	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	ST JOSEPH	IN
2011-03-02	812-807	0–9 XXXall 10 · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	HELTONVL	IN
2010-09-17	812-646	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	BOONVILLE	IN
2009-12-23	812-728	0–9 XXXall 10 · 3 holders which blocks →	AT&T ENTERPRISES, LLC	516C	GALENA	IN
2009-12-23	812-924	0–9 XXXall 10 · 8 holders which blocks →	AT&T ENTERPRISES, LLC	516C	NEW ALBANY	IN
2009-12-07	812-792	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	AT&T ENTERPRISES, LLC	516C	BLOOMFIELD	IN
2006-01-12	812-790	0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks →	AT&T ENTERPRISES, LLC	516C	VINCENNES	IN
2005-07-19	812-329	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	BEDFORD	IN
2005-04-06	812-550	0–9 XXXall 10 · 3 holders which blocks →	AT&T ENTERPRISES, LLC	516C	EVANSVILLE	IN
2001-05-07	812-503	0–9 XXXall 10 · 6 holders which blocks →	AT&T ENTERPRISES, LLC	516C	CHARLESTN	IN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.