ASN Information

What is this tool?

Enter a valid ASN or IP address. This tool will discover important information about about an IP address' ASN (Autonomous System Number). It will display which AS the IP belongs to, the maximum range of the AS, and which IP registrar issued the ASN. The tool will also display how many connections within that AS have connected to DNSstuff.

How do the results help me?

  • IP administration
  • Spam Prevention
  • Fighting Spam

Use this tool to query the IP registrar's database for information about a block of IPs, complete with contact information. Useful for escalating a spam complaint or verifying the status of one's own IP block.