Wikipedia:ISP contact information
Appearance
List of Internet service providers
[edit]Regional WHOIS sources
[edit]- ARIN IPs only. Note: If an IP belongs to an entity outside of the North American region, ARIN will tell you what RIR to consult.
Abuse reporting
[edit]- abuse.net URLs only. Note: If there is nothing in their database, they offer the default postmaster@URL address.
- spamcop.net URLs and IPs, requires free registration (or use BugMeNot)