sample info from one of his addresses

IP address: 84.64.197.68
Reverse DNS: user-1348.wfd78a.dsl.pol.co.uk.
Reverse DNS authenticity: [Verified]
ASN: 5388
ASN Name: ENERGIS-AS (Energis UK)
IP range connectivity: 5
Registrar (per ASN): RIPE
Country (per IP registrar): GB [United Kingdom]
Country Currency: GBP [United Kingdom Pounds]
Country IP Range: 84.64.0.0 to 84.71.255.255
Country fraud profile: Normal
City (per outside source): Unknown
Private (internal) IP? No
IP address registrar: whois.ripe.net
Known Proxy? No

none are anonymous and all are traceable back to his ISP