ecs.dnsp.co

Whether your resolver told us part of your address.

What it does

EDNS Client Subnet lets a resolver pass a piece of your address to authoritative servers so they can answer with something geographically nearer. It also means that prefix is visible to every authoritative server you ever query, not only to us.

Example

$ dig @dnsp.co ecs.dnsp.co TXT +short

"client-subnet: 198.51.100.0/24"

Reading the answer

no client subnet

The private answer. Nothing about your address was passed along.

a /24 prefix

Your network block is disclosed to every authoritative server your resolver contacts.

a /32 prefix

Your exact address is being shared, which is unusually revealing.

Notes

Large public resolvers differ: some send a prefix by default, some never do.
Run the browser probe too. Your browser may use a different resolver than your terminal.