DNS Tools
DNS lookups, propagation checks, record auditing, and domain diagnostics.
Featured
DNS & Name Resolution
-
DNS Query Tool
Full DNS query with answer, authority, and additional sections.
-
Domain Name Lookup
Simple forward and reverse DNS lookups.
-
Quick DNS Lookup
Concise single-line DNS lookups.
-
DNSSEC Query Tool
DNS lookups with DNSSEC validation status.
-
Whois
Look up domain registration, IP allocation, or ASN ownership.
-
DNSSEC Validator
Validate a domain's DNSSEC chain via a validating resolver; show DS / DNSKEY / RRSIG at every zone cut.
-
Reverse IP
Find other domains hosted on the same IP via a passive-DNS provider (Hackertarget free tier).
-
DNS Resolver
Look up DNS records for any hostname against a choice of public resolvers. Switch record type with the tabs.
-
IPv4 Address Lookup
IPv4 address (A record) lookup.
-
MX Lookup
Mail exchanger (MX) record lookup.
-
All DNS Records
Query A, AAAA, MX, NS, TXT, CAA, SOA in parallel.
-
DMARC Record Checker
Look up and parse a domain's DMARC TXT record at _dmarc.<domain>.
-
DKIM Record Checker
Look up a domain's DKIM TXT record(s) at <selector>._domainkey.<domain>.
-
TLS-RPT Checker
Look up and parse a domain's SMTP TLS Reporting (TLS-RPT) record at _smtp._tls.<domain>.
-
BIMI Record Checker
Look up a domain's BIMI record at <selector>._bimi.<domain> and validate its logo (SVG) and VMC certificate.
-
MTA-STS Policy Checker
Look up the _mta-sts TXT record and the HTTPS policy file, then cross-check the policy's mx patterns against the domain's real MX hosts.
-
DNS Check
Audit a domain's delegation: parent/child NS agreement, glue, per-nameserver reachability and authority, SOA serial convergence, and open recursion.
CDN & DNS Propagation
-
DNS Propagation / CDN Check
Query a hostname against 34 public resolvers across multiple countries in parallel; reveals geo-DNS, anycast, and split-horizon behavior.
-
DNS Load Tester login
Sustained-load DNS performance benchmarking tool.
-
DNS Capacity Tester login
Ramps DNS query rate until a resolver loses packets.