UglyTools
Fast, free network utilities — no signup required.
CIDR Calculator
Calculate network ranges, subnet masks, and host counts from CIDR notation.
DNS Lookup
Query DNS records for any domain — A, AAAA, MX, CNAME, TXT, and more.
Email Security
SPF, DKIM, and DMARC checkers plus DKIM key generation.
WHOIS Lookup
Look up domain registration details, expiry dates, and registrar info.
My IP
See your public IP address, geolocation, ISP, and connection details.
Encode & Convert
Base64, URL encode/decode, JWT decoder, timestamp converter, and hash generator.