Playing around with some Google stuff I found a cool little way to gather info on the ASN (Autonomous Systems Number) info of a domain and some incite as to what others are hosted in its network

Autonomous Systems are routable networks within the public Internet, administered by the local RIRs and assigned to owners of networks. Autonomous System Number (ASN) such as: IP owner, registration date, issuing registrar and the max range of the AS with total IPs.

Using Google’s Safe Browsing diagnostic data I can look up a domain and where it’s hosted and drill down to locate other hosts. The purpose of “Safe Browsing” is made to provide details on hosts that have been known to distribute malware.

The URL format to use to check a domain is:

You will be returned info about the domain you look up and the ASN included. This is where you can drill down and obtain some info on others domains listed on that network block location.  Cool huh?  I thought so; and this is why I am sharing.

Hope you find a good use for this, for now its fun via exploration for me.