WebDataCentre.com has a bad bot which does not obey robots.txt file telling them to stay off our web sites. The user agent looks like this:
Mozilla/5.0 (compatible; WebDataCentreBot/1.0; +http://WebDataCentre.com/)
The network is an old favorite which seems to be full of suspiciousness:
OrgName: SoftLayer Technologies Inc.
OrgID: SOFTL
Address: 1950 N Stemmons Freeway
City: Dallas
StateProv: TX
PostalCode: 75207
Country: US
ReferralServer: rwhois://rwhois.softlayer.com:4321
NetRange: 67.228.0.0 - 67.228.255.255