I know that gsa-crawler is Google Search Appliance, but what I found interesting was the IP it came from: 8.6.48.249 So I checked http://8.6.48.249/ Interesting. Search: public content public and secure content Powered by Google Search Appliance Any ideas of what this index is/might be? I get a limited number of results returned for the searches I performed. Checking the whois: Search results for: 8.6.48.249 Level 3 Communications, Inc. LVLT-ORG-8-8 (NET-8-0-0-0-1) 8.0.0.0 - 8.255.255.255 Google Incorporated LVLT-GOOGL-1-8-6-48 (NET-8-6-48-0-1) 8.6.48.0 - 8.6.55.255 # ARIN WHOIS database, last updated 2006-07-09 19:10 # Enter ? for additional hints on searching ARIN's WHOIS database. Search results for: ! NET-8-6-48-0-1 OrgName: Google Incorporated OrgID: GOOGL-1 Address: Google Information Technology Address: 1600 Amphitheatre Parkway City: Mountain View StateProv: CA PostalCode: 94043 Country: US NetRange: 8.6.48.0 - 8.6.55.255 CIDR: 8.6.48.0/21 NetName: LVLT-GOOGL-1-8-6-48 NetHandle: NET-8-6-48-0-1 Parent: NET-8-0-0-0-1 NetType: Reassigned Comment: RegDate: 2006-05-16 Updated: 2006-05-16 OrgTechHandle: MAX1-ARIN OrgTechName: removed OrgTechPhone: +1-removed OrgTechEmail: removed # ARIN WHOIS database, last updated 2006-07-09 19:10 # Enter ? for additional hints on searching ARIN's WHOIS database. Log File: 8.6.48.249 "GET /robots.txt HTTP/1.0" 200 2690 "-" "gsa-crawler (Enterprise; S4-E9LJ2B82FJJAA; me@mycompany.com)" 8.6.48.249 "GET / HTTP/1.0" 200 5348 "-" "gsa-crawler (Enterprise; S4-E9LJ2B82FJJAA; me@mycompany.com)"