IPconf

Network Tools

Eleven server-side tools for diagnosing IP, DNS, TLS, routing, and HTTP issues. No signup. Each runs from our infrastructure, so the result reflects what the public internet sees — not your local resolver or trust store.

Connectivity & Routing

Is the host reachable? Where does the path slow down?

📡

Ping Test

Check host reachability and measure round-trip latency.

 🗺️

Traceroute

Trace the network path and per-hop latency to a destination.

 🔌

Port Scan

Probe common TCP ports on a host to see which services are listening.

DNS

Resolve domains, verify changes, and validate your VPN.

🔍

DNS Lookup

Query DNS records (A, AAAA, MX, TXT, CNAME, NS) for any domain.

 🛡️

DNS Leak Test

See which DNS resolver actually handles your queries.

HTTPS & Security

Certificate health, response headers, IP reputation.

🔒

SSL Check

Inspect SSL/TLS certificate details and expiry for any domain.

 📋

HTTP Headers

Fetch and inspect HTTP response headers (security, caching, CDN).

 🚫

Blacklist Check

Check if an IP appears on spam or abuse DNSBL blacklists.

Identity & Ownership

Who runs this network? What CDN is in front?

📝

WHOIS

Look up domain or IP registration and ownership information.

 🌐

ASN Lookup

Get AS number, organization, country, and announced prefixes.

 ☁️

CDN Check

Detect whether a hostname is served through a CDN and which.

Which tool when?

  • "My site is slow / down for some users" — start with Ping from our edge to confirm reachability, then Traceroute to find where latency or packet loss enters the path. CDN Check tells you which provider is in front, narrowing which support page to read.
  • "Email isn't being delivered" — DNS Lookup for MX / SPF / DKIM / DMARC records, then Blacklist Check to see if your sending IP is listed.
  • "Browser says the certificate is invalid" — SSL Check shows the cert details and chain from outside your local trust store; HTTP Headers reveals whether mixed-content or HSTS issues are at play.
  • "Is my VPN really working?" — DNS Leak Test for resolver leaks; the main homepage shows whether the IP geolocation matches your VPN exit; see the geolocation tutorial for limits.
  • "Who runs this network?" — WHOIS for the registration record, ASN Lookup for the network-layer owner. Combine when one isn't enough.
  • "What's exposed on my server?" — Port Scan shows which common ports respond. Pair with HTTP Headers for the running services.

API access

Every tool here has a matching POST /api/tools/<name> endpoint, plus free no-auth IP and geolocation endpoints. See the API documentation for the full reference.