What Gets Checked
Malware & Blacklist Detection
Checks the domain and IP address against the public Spamhaus, SURBL, SpamCop, Barracuda, and SORBS blacklists
Security Check
HTTPS support, security headers (HSTS, CSP, X-Frame-Options, etc.), cookie attributes, version disclosure
Server Certificate
Validation level (Free / DV, OV, EV), issuer, expiry and days remaining, covered hostnames (SAN), signature algorithm, key length, TLS version, cipher suite
Domain Information (WHOIS)
Registrar, registration date, last updated, expiry date, status, nameservers
Server Location & Owner
Country/region/city with a map, reverse DNS hostname, assigned organization, address range, AS number and operator, network provider
DNS & HTTP Headers
A, AAAA, MX, NS, TXT, SOA, and CNAME records, plus the full list of HTTP response headers returned by the server
* This lookup only performs DNS queries, WHOIS, RDAP, a TLS handshake, and an HTTP fetch. No port scanning or vulnerability testing is performed against the target server.