Network tools that explain the result
Your IP address, DNS records, email authentication, SSL certificates and website checks. Each result starts with a plain-English answer, with the raw data underneath. No sign-up, and what you check isn't stored.
Check a domain, an IP or a link
All tools
Grouped by what you want to check.
IP and privacy5 tools
- What is my IPYour public IPv4 and IPv6 address, internet provider, network (ASN) and approximate location, with how sure each part is.
- IP lookupWho owns any IP address: network, organisation, country, abuse contact and reverse DNS, from the registries' own records.
- WebRTC leak testChecks whether your browser shows a different IP over WebRTC than through your VPN or proxy, with a plain yes or no.
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DNS and domains3 tools
- DNS lookupA, AAAA, CNAME, MX, TXT, NS, SOA, CAA and more for any domain, from the resolver you pick, with TTLs explained.
- DNS propagation checkerThe same record from several public resolvers side by side, a match against the value you expect, and when the old value expires.
- WHOIS lookupRegistrar, creation and expiry dates, status codes and name servers of a domain, from the registry's RDAP service.
Email records4 tools
- MX lookupThe mail servers of a domain in priority order, their IP addresses and which email provider runs them.
- SPF checkerReads a domain's SPF record, counts the DNS lookups against the limit of 10 and flags the mistakes that send mail to spam.
- DKIM checkerFinds the DKIM key for a selector, shows the key type and length, and tries the selectors common providers use.
Website checks4 tools
- Is it down?Checks a website from Cloudflare's network right now: up or down, status code, response time, plus how many people report it down.
- SSL checkerWhether a site's HTTPS works, who issued its certificate, when it expires and which names it covers, from public certificate logs.
- HTTP headers checkerEvery response header of a page, with the security headers graded and each one explained in one line.
Network tools2 tools
Why another network tools site?
Most IP and DNS sites give you raw output, or wrap it in VPN offers and warnings meant to scare. Here each result starts with one sentence that says what it means ("No WebRTC leak", "SPF has errors: 12 DNS lookups, the limit is 10"), then shows the data it's based on, so you can check it or paste it into a ticket with Copy as text.
Every answer comes from a public source at the moment you ask: DNS resolvers, the official domain and IP registries, certificate logs or a live request from Cloudflare's network. How our tools work explains each one and its limits.
What this site doesn't do
- No logs of what you check. Lookups go to the public source and the answer comes back; nothing is kept about you or your queries.
- No scanning of other people's systems. The port checker tests your own connection only, and private network addresses are refused everywhere.
- No fake warnings and no VPN pop-ups. If something is wrong, the result says what and how to fix it.
Results come from public DNS, registry and certificate data and from checks run from Cloudflare's network at the moment you ask. They can differ from what another network sees. How our tools work · Terms of use.