Tools

---

Domains

• Health Check
• Top-level domains from ICANN
• Top-level domains from PublicSuffixList
• ICANN vs PublicSuffixList Top-level domains
• ICANN vs whoisserver-world Top-level domains
• Usable top-level domains
• Nice top-level domains
• Check the public suffix for a hostname
• Convert to/from punycode
• RDAP servers
• Domain Name Finder
• Expiration Check
• Tranco Rank

DNS

• DNSSEC Check
• DNS Lookup
• MX Check
• NS Check
• Open Resolvers
• Reverse DNS Lookup
• Which DNS server am I using?

HTTP

• HTTPS Certificate Check (Bulk)
• Headers: Mine (request), Server (response)
• Content-Type header values
• FLoC header opt-out check
• Redirection check
• URL encode/decode
• URL parser
• User Agent

TCP/IP

• ASN Lookup
• IP Geolocation
• Speed Test
• TCP Ports
• TLS Certificate Check (aka SSL)
• What's my IP? 3.135.190.107

Random Info

• Glossary
• Steps involved in getting a web page

Experimental

• Hash bytes/strings/files with multiple algorithms
• Heroku-style (Haikunator) names