DNS Fetcher

Choose a tool

• Resolve / Reverse Lookup Forward-resolve a hostname to its addresses, or reverse-resolve an IP to its PTR name.
• DNS Records Query A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records in one sweep.
• WHOIS / RDAP Registration details for a domain or IP range, via RDAP with a WHOIS fallback.
• Email Auth (SPF/DKIM/DMARC) Check the DNS records that decide whether your mail is trusted or filtered.
• TLS Certificate Issuer, validity window, SANs and protocol for a host's TLS certificate.
• HTTP Path Trace Follow the redirect chain hop by hop, with timing and a security-header review.
• Port Check Test whether a TCP port accepts connections.
• TCP Ping Measure round-trip time using TCP handshakes. Not ICMP — see the note in the results.

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