IP, DNS & domain tools
Look up your public IP, check DNS records and explore domains. Live lookups use public providers; validation runs on your device.
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IP, DNS & domain tools25
What Is My IP?
Find the public IPv4 or IPv6 address used by this browser, plus approximate location and network information. Refresh, copy or download the result.
IP Location Lookup
Look up approximate country, city, region and ASN for public IPv4 and IPv6 addresses. Check multiple IPs and export results.
DNS Lookup
Check A, AAAA, MX, TXT, NS, SOA, CAA and CNAME records together. See resolver responses, TTL values and DNSSEC authentication status.
DNS Resolver Comparison
Compare the same DNS record using Google Public DNS and Cloudflare. View differences and TTLs without claiming worldwide propagation coverage.
A Record Lookup
Look up IPv4 addresses with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
AAAA Record Lookup
Look up IPv6 addresses with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
CNAME Record Lookup
Look up canonical aliases with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
MX Record Lookup
Look up mail exchangers and priorities with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
TXT Record Lookup
Look up text and verification records with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
NS Record Lookup
Look up authoritative nameservers with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
SOA Record Lookup
Look up zone serial and timing values with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
CAA Record Lookup
Look up certificate-authority permissions with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
SRV Record Lookup
Look up service priorities, ports and targets with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
DS Record Lookup
Look up delegation signer records with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
DNSKEY Record Lookup
Look up published DNSSEC keys with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
HTTPS Record Lookup
Look up HTTPS service bindings with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
SVCB Record Lookup
Look up service bindings with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
TLSA Record Lookup
Look up TLS certificate associations with Google or Cloudflare DNS. Check multiple domains, inspect TTLs, copy records and export JSON.
SPF Record Lookup
Find published SPF policies in domain TXT records. View the full policy and detect multiple SPF records; this does not simulate mail delivery.
DMARC Record Lookup
Query the _dmarc TXT record for a domain and inspect its published policy. View records, TTLs and resolver status.
DKIM Record Lookup
Look up a domain's published DKIM key using your selector. Inspect the TXT record without uploading email or private keys.
Reverse DNS Lookup
Convert IPv4 or IPv6 addresses into reverse DNS names and query their PTR records. Copy names, view TTLs and export results.
IPv4 Subnet Calculator
Calculate network, subnet mask, broadcast, address count and usable host range from CIDR notation. Includes /31 and /32 handling.
IP Address Validator
Validate IPv4 and IPv6 syntax, normalize IPv6 addresses and generate reverse DNS names locally. Supports batches without network requests.
Domain Name Parser
Normalize a domain or URL to its DNS hostname and ASCII IDN form. Inspect DNS labels and lengths locally without contacting the domain.