lost extension: whois/dns checker

[igns]

Hello, and please excuses if this question goes in the wrong group.

I had some time ago a nice firebird extension thad add a toolbar from wich I was able to do whois searchs, dns checks and that sort of things. Sadly I start a new app/profile clean install recently, and just don´t can find now where this extension come from. I look at the extensions listed by djst, without luck.
Any idea ?

thanks in advance