MarkosWebAI Agentic Readiness Directory

addthree.com

Seattle SEO & SEM Search Marketing Agency - Add3

Overview

addthree.com has been online since at least 2013 and last returned HTTP 301, with 48 recorded homepage checks. It runs on wordpress on Apache/2.2.22 (Unix) mod_ssl/2.2.22 OpenSSL/0.9.8m DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635.

First seen online2013-05-24 or earlier
Last seen online2025-09-08
Web presence12+ years
StatusHTTP 301
HTTPSno
Homepage titleSeattle SEO & SEM Search Marketing Agency - Add3
Meta descriptionAdd3 is a Seattle search marketing agency focused on PPC and SEO services.
Technologywordpress on Apache/2.2.22 (Unix) mod_ssl/2.2.22 OpenSSL/0.9.8m DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635

Profile

addthree.com has been online for at least 12 years - first seen on 24 May 2013 and most recently on 8 Sep 2025. The site may well be older; 2013 is simply our earliest record of it. Its homepage has been checked 48 times - about 4 per year - a level of activity typical of a modest but maintained site.

The most recent response was HTTP 301 (a redirect) over HTTP.

The homepage is titled "Seattle SEO & SEM Search Marketing Agency - Add3". It describes itself as: "Add3 is a Seattle search marketing agency focused on PPC and SEO services.". The site is built on wordpress on Apache/2.2.22 (Unix) mod_ssl/2.2.22 OpenSSL/0.9.8m DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635.

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Frequently asked

How long has addthree.com been online?
addthree.com has been online for at least 12 years - first seen on 24 May 2013, and possibly earlier.
Is addthree.com currently active?
At the last check (8 Sep 2025) addthree.com returned HTTP 301.
What technology does addthree.com use?
addthree.com runs on wordpress on Apache/2.2.22 (Unix) mod_ssl/2.2.22 OpenSSL/0.9.8m DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635.
How active is addthree.com?
Its homepage has been checked 48 times between 2013 and 2025 - about 4 per year.

This profile for addthree.com is compiled from public web data (methodology). Machine-readable: JSON. Updated .