What’s my IP

What the internet sees when you connect. No ads, no tracking, no third-party lookups.

216.73.216.201

IP version: IPv4
Network: Anthropic, PBC
ASN: AS16509
Country: US
Region: Ohio
City: Columbus
Timezone: America/New_York
Edge location: CMH
Protocol: HTTP/2
TLS: TLSv1.3
Cipher: AEAD-AES256-GCM-SHA384
User agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

From the command line

curl satools.dev/api/ip
curl satools.dev/api/ip?format=json

Returns the bare address and a newline — safe to pipe straight into a variable.

INFO3 findings · 4ms

No problems found. Everything checked here is configured correctly.

3 informational findings collapsedshow

info
You connected over IPv4
Your network reached this site using IPv4. If your ISP offered IPv6, your browser would normally have preferred it.
FixAsk your ISP whether IPv6 is available, or check whether it is disabled on your router.
info
No reverse DNS for your address
No PTR record is published for this IP. That is normal for a residential connection, but a mail server without reverse DNS will have its messages rejected.
FixIf this address sends email, ask your provider to publish a PTR record matching its hostname.
info
Your request carried proxy headers
The request included x-forwarded-proto, x-real-ip, which usually means a proxy, VPN gateway or corporate egress sits in the path.

▸raw data