DNS Lookup, Security Headers and Webhook Generator stop returning demo data and start doing the work — real resolvers, real TLS chains, real requests.
Fixed
DNS Lookup — every record type, custom nameservers and reverse lookups through a real resolver, plus WHOIS over port 43 with IANA referral following.
Security Headers — fetches the headers of the URL you give it and grades those.
Webhook Generator — sends the request you built.
Certificate Inspector — pulls a live TLS chain for a domain and checks hostname and expiry against the bundled root store. The deliberately broken example certificate is now a valid self-signed one.