Knowledge Base

Reference articles for every tool on MarinaDNS — what each check does, when to use it, and how to read the results.

DNS Records & Domain Lookups

DNS Lookup, Reverse DNS, WHOIS, and ASN Lookup — what each one shows and how to read it.

DNS Propagation, Health Check, DNSSEC, and Blacklist Check — is this domain actually healthy?

Mail Auth Check, SPF and DMARC Builders, Email Header Analyzer — how SPF, DKIM, and DMARC work together.

SSL Certificate, TLS Scanner, and CT Log Search — certificates, protocols, and issuance history.

HTTP Headers, Security Headers, CSP Builder, Status, Redirects, and robots.txt — one page each.

Ping, Traceroute, MTR, Port Check, and IP Reputation — diagnosing network problems step by step.

IP Lookup, Subnet Calculator, IP Range, and MAC Lookup — addressing at every layer.

Base64, URL Encode/Decode, JSON Formatter, MIME Type, and Timestamp — everyday conversions.

JWT Decoder, Regex Tester, Hash Generator, Password Generator, and Encoding Detector.