Network & DNS
Follow your public connection, resolve records and examine domain trust.
A tool for each question.
12 focused tools. Choose a module and follow the evidence.
DNS records & domain policy
Explore public DNS records, DNSSEC evidence, domain names, CAA and cache lifetimes.
DNS record explorer
Query A, AAAA, MX, TXT, CAA and other DNS records with TTLs and resolver status.
DNSSEC inspector
Read a validating resolver’s AD flag and inspect DS, DNSKEY and signed answer records.
Domain name inspector
Inspect ASCII domain labels, IDN conversion and hostname length without performing a DNS lookup.
CAA record analyser
Inspect CAA flags, issuer authorisations and reporting properties from pasted record values.
DNS TTL calculator
Convert a TTL in seconds to readable units and an illustrative cache expiry time.
IP addresses & networking
Check a public IP, calculate IPv4 subnets and understand IPv6 address notation.
Public IP & connection
Find the public IP seen by an external service and inspect your connection’s browser signals.
IPv4 subnet calculator
Calculate an IPv4 CIDR network, mask, broadcast address and usable host range.
IPv6 address inspector
Expand and compress an IPv6 address and identify common address scopes.
Email authentication
Inspect email DNS and understand SPF, DKIM and DMARC policies.
Email domain security
Inspect MX, SPF, DMARC and a chosen DKIM selector with configuration-specific findings.
SPF policy analyser
Parse a pasted SPF policy, identify qualifiers and count direct DNS-using terms.
DMARC policy analyser
Read a pasted DMARC record and review policy, alignment, reporting and percentage tags.
DKIM public key inspector
Inspect a pasted DKIM key record, its key type, flags and public-key size.
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