Whoisology is a massive, searchable database that provides an in-depth view of domain name ownership through its cross-referenced domain name whois records. The tool's priority is on reverse whois, to assist with security, cyber crime investigation, research and other business endeavors. Our appreciation for this recommendation goes to crashdodson. Source: over 1 year ago

It looks like the domain was registered in 2006 (info from https://whoisrequest.com/history/), and went offline in 2018. A long shot, but if the person who registered the site didn't hide behind a privacy option, you might be able to dig up their email address from looking into the historical WHOIS data via a site like https://whoisology.com/, or https://www.domainiq.com/. Source: almost 2 years ago

More then just reverse lookups on emails, Whoisology https://whoisology.com/#advanced Website analytics, Traffic, location, Overview etc http://www.statscrop.com/www/inteltechniques.com Youtube Video meta Data Viewer, GPS, Keywords etc http://www.amnestyusa.org/citizenevidence/. - Source: dev.to / about 3 years ago

Yeah I search for a domain using this. I only search through Namecheap if I'm actually buying the domain right then and there. Haven't had a problem yet with the 3rd party site. Source: about 1 year ago

Instantdomainsearch.com also namecheckr for socials. Source: over 1 year ago

So if I was in your shoes I'd consider purchasing the domain (if that's an option), if it is for sale it will say so here, consider the ccTLD (.us or wherever you're from), see if you can abbreviate the company name taconsulting.com, or depending on the name of the firm you could probably add a shorter keyword. Source: over 1 year ago

I like this one: https://instantdomainsearch.com/. Source: almost 2 years ago

I just tried the site. In Firefox I searched for "led lighting" and this is the page I saw:... - Source: Hacker News / about 2 years ago