Diagnose. Verify. Understand.

01 Featured HTTP protection Get a clear grade for HSTS, CSP, X-Frame-Options and X-Content-Type-Options. → 02 Featured DNSSEC Verify your domain’s DNSKEY, DS and RRSIG chain of trust. → 03 Featured Email security Review MX, SPF, DMARC, DKIM, MTA-STS and TLS-RPT in one guided view. → 04 Featured security.txt Validate the contact, expiry and RFC 9116 file location. → 05 Full DNS lookup Query A, AAAA, MX, NS, TXT, CNAME and SOA records. → 06 WHOIS & domain Review registrar, dates and name servers. → 07 Website IP Resolve a domain to its public IPv4 and IPv6 addresses. → 08 Domain age Find creation, update and expiry dates. → 09 TLS certificate Check certificate validity, hostname matching and expiry. → 10 HTTP headers Review the response and security headers returned by a server. → 11 Port check Check one authorised public port without network scanning. → 12 Availability Check response code and delay from Belgium. → 13 IP reputation Check the local snapshot of the IBCSC DNSBL zone. → 14 Short-link decoder Inspect the declared destination without opening its content. → 15 CAA records Read the CAA authorisations published directly on the domain name. → 16 TLS session Inspect the negotiated protocol and cipher together with the presented certificate. → 17 Redirect chain Follow every URL hop and spot domain or protocol changes. → 18 Cookie audit Check Secure, HttpOnly, SameSite, lifetime and scope on observed cookies. → 19 Web application firewall Identify public signals of a WAF or upstream protection service. → 20 Social preview Preview the Open Graph and Twitter metadata shown when a page is shared. → 21 Web footprint Estimate transferred page weight and its indicative environmental impact. → 22 Email check Check address syntax and the presence of MX servers. → 23 SPF generator Compose a readable SPF policy for authorised servers. → 24 DKIM generator Generate an RSA pair and related DNS record locally. → 25 My IP address Show your public IP, provider and approximate location. → 26 Connection speed Measure latency and download throughput to IBCSC infrastructure. → 27 Privacy signals Review visible privacy signals and the possible presence of a relay. → 28 Browser information Identify the browser, system, language and exposed capabilities. → 29 IP calculator Calculate network, mask, broadcast and usable IPv4 range. → 30 Password generator Create a random password locally in your browser. → 31 Password strength Estimate length, diversity and entropy locally. → 32 Punycode Convert an internationalised domain to ASCII. → 33 Hash & encoding Calculate SHA-256, SHA-384 or SHA-512 without transmitting the text. → 34 Base64 Encode or decode UTF-8 text directly in your browser. → 35 Download time Estimate transfer time from file size and throughput. → 36 Compromised password Look for a password in known breaches using a k-anonymity query. →