Free DNS & Domain Tools

DNS lookups, WHOIS, SSL checks, email deliverability, blacklists, and more — no signup required.

15

Tools

5

Client-side

0

Data stored

DNS Tools

DNS Record LookupQuery any DNS record type for a domain in real time.

Reverse DNS LookupConvert an IP address to its hostname via PTR record lookup.

Email Deliverability TesterCheck MX, SPF, DKIM, and DMARC records for any domain.

Domain Tools

WHOIS LookupView domain registration details, expiry date, and registrar.

Domain Availability CheckerCheck if a domain name is available to register.

Blacklist CheckerCheck if an IP or domain is listed on spam blacklists.

SSL & Web

SSL Certificate CheckerCheck SSL certificate details, expiry date, and issuer.

HTTP Headers CheckerView all HTTP response headers returned by any URL.

Redirect TracerFollow and visualize the full redirect chain for any URL.

Website Speed TestMeasure website response time and TTFB from Cloudflare's edge.

Network Tools

IP Address ConverterConvert IP addresses between decimal, hex, binary, and IPv6.

Subnet CalculatorCalculate IP ranges, netmask, and host count from CIDR notation.

Encoding & Parsing

URL ParserDecompose any URL into protocol, host, path, query params, and fragment.

Base64 URL EncoderEncode or decode URL-safe Base64 (RFC 4648) in your browser.

Punycode ConverterConvert internationalized domain names to Punycode and back.