Today we've enhanced the Web Interface page with a new checkbox to enable ASN lookups on queries. This new feature will show you the ASN name, provider and country for the IP Addresses you're querying and it does so with a subtle hover tooltip as shown below.

We know you'll find this addition to the web interface useful as we ourselves make many manual queries to the API to get country and provider information for IP Addresses so this feature will be something we make heavy use of ourselves.