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 773

ONVOY, LLC 16

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
2026-08-19	773-460	0XXX which blocks →	ONVOY, LLC	224C	CHICGOZN05	IL
2025-10-15	773-448	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC	224C	CHICGOZN07	IL
2025-08-14	773-903	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC	224C	CHICGOZN06	IL
2025-08-12	773-740	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC	224C	CHICGOZN02	IL
2023-06-15	773-300	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC	224C	CHICGOZN05	IL
2023-06-15	773-500	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC	224C	CHICGOZN10	IL
2023-06-08	773-872	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC	224C	CHICGOZN04	IL
2021-07-01	773-352	0–9 XXXwhole prefix which blocks →	ONVOY, LLC	224C	CHICGOZN03	IL
2020-02-05	773-232	0–9 XXXwhole prefix which blocks →	ONVOY, LLC	224C	CHICGOZN10	IL
2019-08-07	773-207	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC	224C	CHICGOZN10	IL
2019-01-31	773-692	0–9 XXXwhole prefix which blocks →	ONVOY, LLC	224C	CHICGOZN04	IL
2015-11-23	773-839	0–9 XXXwhole prefix which blocks →	ONVOY, LLC	224C	CHICGOZN04	IL
—	773-340	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC	224C	CHICGOZN08	IL
—	773-599	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC	224C	CHICGOZN08	IL
—	773-609	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC	224C	CHICGOZN10	IL
—	773-819	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC	224C	CHICGOZN07	IL

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.