Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 231

COMMIO, LLC 14

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 thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2022-11-04	231-390-1XXX	1000–1999	Assigned	COMMIO, LLC	939H	BIG RAPIDS	MI
2022-11-04	231-410-0XXX	0000–0999	Assigned	COMMIO, LLC	939H	MANISTEE	MI
2022-11-02	231-364-1XXX	1000–1999	Assigned	COMMIO, LLC	939H	NORTHPORT	MI
2022-10-07	231-338-0XXX	0000–0999	Assigned	COMMIO, LLC	939H	BALDWIN	MI
2021-10-15	231-324-0XXX	0000–0999	Assigned	COMMIO, LLC	939H	HARBOR SPG	MI
2021-10-15	231-324-1XXX	1000–1999	Assigned	COMMIO, LLC	939H	HARBOR SPG	MI
2021-09-09	231-627-0XXX	0000–0999	Assigned	COMMIO, LLC	939H	CHEBOYGAN	MI
2021-09-09	231-880-1XXX	1000–1999	Assigned	COMMIO, LLC	939H	MUSKEGON	MI
2021-09-09	231-880-8XXX	8000–8999	Assigned	COMMIO, LLC	939H	MUSKEGON	MI
2021-09-09	231-880-9XXX	9000–9999	Assigned	COMMIO, LLC	939H	MUSKEGON	MI
2021-08-17	231-786-0XXX	0000–0999	Assigned	COMMIO, LLC	939H	TRAVERSECY	MI
2021-08-17	231-786-1XXX	1000–1999	Assigned	COMMIO, LLC	939H	TRAVERSECY	MI
2021-08-17	231-786-3XXX	3000–3999	Assigned	COMMIO, LLC	939H	TRAVERSECY	MI
2021-08-17	231-786-9XXX	9000–9999	Assigned	COMMIO, LLC	939H	TRAVERSECY	MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.