Network & IP

Find your public IPv4 and IPv6 address with ISP, city, country, ASN, and timezone — loads instantly.

Test whether WebRTC exposes your real IP address behind a VPN — detects local and public IP leaks.

Look up the location, ISP, and network details for any IP address — city, country, timezone, ASN, and more.

Calculate network address, broadcast, host range, subnet mask, and wildcard from CIDR notation instantly.

Calculate how long a file download takes — enter file size and connection speed, get an instant estimate.

Generate random MAC addresses in bulk — configurable format, case, OUI flags, and unicast/multicast bits.

Query all DNS record types for any domain — A, AAAA, MX, TXT, CNAME, NS, SOA, CAA — via Cloudflare DoH.

Check what HTTP response headers any URL returns. Inspect security headers, follow redirect chains, and get a security grade.

Look up MX records for any domain — mail server priority, IP addresses, and email provider detection.

Check if an email address is valid — syntax, MX records, and disposable email detection.

Look up and validate DKIM records for any domain — public key, key type, and selector auto-detection.

Look up and analyse the DMARC record for any domain — policy, alignment, reporting, and configuration warnings.

Look up and validate SPF records — parse mechanisms, detect misconfigurations, and check email authentication.

Look up domain registration details — registrar, creation/expiry dates, nameservers, and DNSSEC — via RDAP.

Check SSL/TLS certificate validity, issuer, expiry, and SANs for any domain via Certificate Transparency logs.