Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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 540

CORETEL VIRGINIA, LLC - VA 20

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
2019-03-07	540-500	0–9 XXXall 10 · 7 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	LOUISA	VA
2019-03-05	540-766	1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	NATURALBDG	VA
2018-06-26	540-281	0–9 XXXall 10 · 4 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	BLUEMONT	VA
2018-06-26	540-306	0–9 XXXall 10 · 4 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	BOYCE	VA
2018-06-26	540-472	0–9 XXXall 10 · 4 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	BROKENBURG	VA
2018-06-26	540-501	0–9 XXXall 10 · 3 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	CRIGLERSVL	VA
2018-06-26	540-502	0–9 XXXall 10 · 2 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	GAINESBORO	VA
2018-06-26	540-503	0–9 XXXall 10 · 3 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	GORE	VA
2018-06-26	540-506	0–9 XXXall 10 · 2 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	MARSHALL	VA
2018-06-26	540-513	0–9 XXXall 10 · 6 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	ORANGE	VA
2018-06-26	540-516	0–9 XXXall 10 · 2 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	SHENANDHPK	VA
2018-06-26	540-517	0–9 XXXall 10 · 3 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	SPERRYVL	VA
2018-06-26	540-528	0–9 XXXwhole prefix which blocks →	CORETEL VIRGINIA, LLC - VA	5832	THE PLAINS	VA
2018-06-26	540-530	0–9 XXXall 10 · 2 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	UPPERVILLE	VA
2009-03-20	540-218	0–9 XXXall 10 · 5 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	SHENANDOAH	VA
2009-03-20	540-395	0–9 XXXall 10 · 4 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	ORANGE	VA
2004-09-20	540-322	0–9 XXXall 10 · 6 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	FREDECKSBG	VA
—	540-452	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	LURAY	VA
—	540-715	0–9 XXXall 10 · 5 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	UNIONVILLE	VA
—	540-738	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	CORETEL VIRGINIA, LLC - VA	5832	MADISON	VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.