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Tools

WHOIS

Gives who announces the address block.

  • Range and CIDR
  • Owner and abuse contact
  • Raw response in sight

Format this tool expects

8.8.8.8

One address per line. The lookup asks the block registry who is responsible for it.

0 / 10

Result

Ready to run. What comes out here:

  • The range of the address
  • The network name and the owner
  • The abuse contact
  • The raw WHOIS server response

How to read the result

The owner and the abuse contact are the most useful fields: that is where an unfair block gets reported. The range shows how many addresses come from the same block — handy when a neighbour in the range causes trouble.

Limits of this tool

Up to ten lines per run, with a few seconds per check. Nothing you paste is kept: the list exists only while the check runs.

Next tools

Locate IPGives the country of each address.
BlocklistsCounts how many public lists the address appears on.
RouteLists the hops to the address.
AnonymityShows the country a server sees for that address.

Guides for this tool

Reading a WHOIS result

The record says who answers for the block, not who is using the address.

The reputation of an address

A blocklist is a signal, not a verdict.

Common questions

What does the abuse contact solve?

Formal unblock requests. Keep the address shown here: it is the right path when a site refuses without reason.

Why is the raw response hidden?

Because it is long and technical. It is one click away, to check any field the summary does not show.