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Check connection

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Network tools that keep what they see to themselves.

IP geolocation by DB-IP

ToolsIP Address Lookup DNS Leak Test HTTP Headers Ping WHOIS Lookup SSL/TLS Checker

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IP lookup
DNS leak test
HTTP headers
Ping
WHOIS
SSL checker

Who answers your
DNS queries?

Your browser resolves ten random names that only our own nameserver can answer. We list every resolver that asked, then the test is gone after ten minutes.

Takes about five seconds. Includes the WebRTC check.

What the test checks

1The address you connect from and the network it belongs to.
2Ten test names only our nameserver knows, and every resolver that asks it for them.
3Which addresses your browser gives away through WebRTC.

What we pass on

Nothing.

The test names were answered by our own nameserver.

skyping.chown
*.leak.skyping.chown
stun.skyping.chown

From your terminal

$ curl skyping.ch/dns

About this check

The full test needs a browser: curl only shows the address you connect from.
Only test IDs our server handed out are recorded, each for ten minutes.
Resolvers often sit in another city than you. What counts is whose network they are in.
Some resolvers pass the first part of your address (ECS) to every site's name server. Google does, Cloudflare and Quad9 do not.