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 317

ONVOY, LLC - IN 17

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
2026-05-07	317-303	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - IN	097D	PLAINFIELD	IN
2024-06-06	317-907	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	INDIANAPLS	IN
2023-07-25	317-812	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - IN	097D	FRANKLIN	IN
2023-07-25	317-930	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - IN	097D	WHITELAND	IN
2023-05-22	317-463	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - IN	097D	INDIANAPLS	IN
2017-12-07	317-792	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - IN	097D	FISHERS	IN
2016-05-06	317-676	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - IN	097D	MARIETTA	IN
2016-02-08	317-342	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	ZIONSVILLE	IN
2015-12-08	317-794	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - IN	097D	INDIANAPLS	IN
2015-11-20	317-854	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - IN	097D	INDIANAPLS	IN
2014-12-18	317-943	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - IN	097D	DANVILLE	IN
2014-12-18	317-953	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	NEWPALSTIN	IN
2010-03-29	317-759	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - IN	097D	INDIANAPLS	IN
2008-01-11	317-641	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - IN	097D	INDIANAPLS	IN
2005-03-28	317-644	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - IN	097D	INDIANAPLS	IN
—	317-599	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	INDIANAPLS	IN
—	317-666	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - IN	097D	FAIRLAND	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.