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 226

Fibernetics Corporation 55

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
2021-01-21	226-742	not yet reported which blocks →	Fibernetics Corporation	464D	Galt	—
2021-01-21	226-743	not yet reported which blocks →	Fibernetics Corporation	464D	Hespeler	—
2021-01-12	226-725	not yet reported which blocks →	Fibernetics Corporation	464D	Brantford	—
2021-01-12	226-768	not yet reported which blocks →	Fibernetics Corporation	464D	Chatham	—
2020-06-08	226-541	not yet reported which blocks →	Fibernetics Corporation	464D	Guelph	—
2020-06-08	226-547	not yet reported which blocks →	Fibernetics Corporation	464D	Woodstock	—
2020-05-11	226-554	not yet reported which blocks →	Fibernetics Corporation	464D	Hillsburgh	—
2020-05-11	226-612	not yet reported which blocks →	Fibernetics Corporation	464D	Caledon	—
2020-05-11	226-613	not yet reported which blocks →	Fibernetics Corporation	464D	Elora	—
2020-05-11	226-614	not yet reported which blocks →	Fibernetics Corporation	464D	Erin	—
2020-05-11	226-615	not yet reported which blocks →	Fibernetics Corporation	464D	Shelburne	—
2020-04-24	226-564	not yet reported which blocks →	Fibernetics Corporation	464D	London	—
2019-02-13	226-553	not yet reported which blocks →	Fibernetics Corporation	464D	Tillsonburg	—
2019-02-12	226-557	not yet reported which blocks →	Fibernetics Corporation	464D	Woodstock	—
2016-01-28	226-449	not yet reported which blocks →	Fibernetics Corporation	464D	Fergus	—
2015-11-10	226-532	not yet reported which blocks →	Fibernetics Corporation	464D	Clinton	—
2015-11-10	226-534	not yet reported which blocks →	Fibernetics Corporation	464D	Simcoe	—
2013-12-20	226-259	not yet reported which blocks →	Fibernetics Corporation	464D	Orangeville	—
2013-01-07	226-667	not yet reported which blocks →	Fibernetics Corporation	464D	London	—
2012-11-19	226-766	not yet reported which blocks →	Fibernetics Corporation	464D	Stratford	—
2012-11-19	226-767	not yet reported which blocks →	Fibernetics Corporation	464D	Listowel	—
2012-11-13	226-256	not yet reported which blocks →	Fibernetics Corporation	464D	Owen Sound	—
2012-11-13	226-257	not yet reported which blocks →	Fibernetics Corporation	464D	Walkerton	—
2012-11-13	226-258	not yet reported which blocks →	Fibernetics Corporation	464D	Durham	—
2012-07-17	226-726	not yet reported which blocks →	Fibernetics Corporation	464D	Strathroy	—
2012-05-15	226-666	not yet reported which blocks →	Fibernetics Corporation	464D	Kitchener-Waterloo	—
2012-03-22	226-526	not yet reported which blocks →	Fibernetics Corporation	464D	Windsor	—
2012-01-24	226-884	not yet reported which blocks →	Fibernetics Corporation	464D	London	—
2011-11-21	226-336	not yet reported which blocks →	Fibernetics Corporation	464D	Kitchener-Waterloo	—
2009-08-19	226-776	not yet reported which blocks →	Fibernetics Corporation	464D	Sarnia	—
2009-08-19	226-996	not yet reported which blocks →	Fibernetics Corporation	464D	Chatham	—
2009-07-24	226-446	not yet reported which blocks →	Fibernetics Corporation	464D	Ohsweken	—
2009-05-22	226-225	not yet reported which blocks →	Fibernetics Corporation	464D	Paris	—
2009-05-21	226-828	not yet reported which blocks →	Fibernetics Corporation	464D	Acton	—
2009-05-21	226-838	not yet reported which blocks →	Fibernetics Corporation	464D	Rockwood	—
2009-05-07	226-227	not yet reported which blocks →	Fibernetics Corporation	464D	Brantford	—
2009-05-04	226-706	not yet reported which blocks →	Fibernetics Corporation	464D	Guelph	—
2008-09-12	226-223	not yet reported which blocks →	Fibernetics Corporation	464D	Drayton	—
2008-09-12	226-233	not yet reported which blocks →	Fibernetics Corporation	464D	Linwood	—
2008-09-12	226-244	not yet reported which blocks →	Fibernetics Corporation	464D	Wellesley	—
2008-09-12	226-255	not yet reported which blocks →	Fibernetics Corporation	464D	St. Clements	—
2008-09-12	226-266	not yet reported which blocks →	Fibernetics Corporation	464D	Elmira	—
2008-09-12	226-288	not yet reported which blocks →	Fibernetics Corporation	464D	St. Jacobs	—
2008-09-12	226-333	not yet reported which blocks →	Fibernetics Corporation	464D	New Hamburg	—
2008-09-12	226-353	not yet reported which blocks →	Fibernetics Corporation	464D	Plattsville	—
2008-09-12	226-355	not yet reported which blocks →	Fibernetics Corporation	464D	Baden	—
2008-09-12	226-366	not yet reported which blocks →	Fibernetics Corporation	464D	Breslau	—
2008-09-12	226-556	not yet reported which blocks →	Fibernetics Corporation	464D	Ayr	—
2008-09-12	226-565	not yet reported which blocks →	Fibernetics Corporation	464D	New Dundee	—
2008-09-12	226-566	not yet reported which blocks →	Fibernetics Corporation	464D	Hespeler	—

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.