🌐 IP Address

216.73.216.94

IPv6: …

🌍 Geolocation
  • Country: US United States
  • Region: Ohio
  • City: Columbus
  • Coords: 39.9587, -82.9987

🔌 ASN / Network
📡 Anycast PoP

Which anycast point-of-presence your network reaches for popular providers. Probed client-side; nothing is sent to this server.

🔎 DNS & DNSSEC

Resolver seen by Google's o-o.myaddr.l.google.com: not yet probed

⚪ validating…

⏱️ Timing

Server handling time: 36.5ms (time spent on the server, excludes network)

🔗 Connection Protocol

Connected via HTTP/2 over TLSv1.3 ALPN: h2

📋 Session history

IPs seen across your visits, stored in your browser's localStorage only — never sent to the server.

  1. No history yet.

🛰️ Traceroute
📋 Request inspection
Headers seen by the server
  • Method: GET
  • Path: /
  • Scheme: http
  • Direct client (pre-proxy): 100.64.5.1
  • Forwarded proto: https
host: secure.cptv.cz
x-base-domain: cptv.cz
x-forwarded-for: 216.73.216.94
x-forwarded-proto: https
x-forwarded-http-version: HTTP/2.0
x-forwarded-tls-version: TLSv1.3
x-forwarded-tls-cipher: TLS_AES_256_GCM_SHA384
x-forwarded-alpn: h2
accept: */*
user-agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
accept-encoding: gzip, br, zstd, deflate
Response headers cptv sends back
  • X-Response-Time-Ms — server-side handling time
  • Access-Control-Allow-Origin: * — set on /ip, /ipv4, /ipv6 and their aliases so the browser dual-stack probe can read them
  • X-Traceroute-Cached / X-Traceroute-Cache-Age / X-Traceroute-Refreshes-In — set on every /traceroute* response
  • Cache-Control: no-store — set on the IP echo endpoints so dual-stack results are always fresh

Inspect them yourself with curl -I cptv.cz/ip.