DNS Lookup
Query A, AAAA, CNAME, TXT, and other DNS records for a domain.
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DNS Tools
View categoryA Record Lookup
Check IPv4 A records for a domain or hostname.
AAAA Record Lookup
Check IPv6 AAAA records for a domain or hostname.
CNAME Lookup
Check CNAME alias records for a domain or hostname.
NS Lookup
Check authoritative name servers and delegation for a domain.
Delegation / Authoritative NS Check
Verify delegation and inspect the authoritative nameserver set for a domain.
Glue Record Check
Check whether in-bailiwick nameservers have the required glue A and AAAA records.
PTR / Reverse DNS Lookup
Check PTR records and reverse DNS hostnames for an IPv4 or IPv6 address.
DoH Endpoint Check
Test a DNS-over-HTTPS endpoint with a live JSON query and inspect the response.
DoT Endpoint Check
Review a DNS-over-TLS endpoint target and browser-safe preflight signals before deeper validation.
DoQ Endpoint Check
Review a DNS-over-QUIC resolver hostname with browser-safe preflight signals before deeper validation.
DDR / Designated Resolver Check
Inspect HTTPS and SVCB records that may be used for designated resolver discovery.
Resolver Information Check
Inspect which public recursive resolver answered a DNS query and review the returned record context.
DNSSEC Check
Validate whether a domain has DNSSEC configured correctly.
DNS Propagation Check
Verify whether recent DNS changes are visible across resolvers.
Email Tools
View categoryMX Lookup
Inspect mail exchange records and delivery destinations for a domain.
SPF Check
Review SPF records and authorized sending sources for a domain.
DKIM Check
Validate DKIM selectors and public keys for signed email.
DMARC Check
Inspect DMARC policy, alignment, and reporting configuration.
SMTP Test
Test SMTP connectivity and common mail transport responses.
IP & Network Tools
View categoryIP Lookup
Inspect basic ownership, reverse DNS, and network details for an IP.
Ping
Check whether a host responds and measure round-trip latency.
Traceroute
Trace the network path between a client and destination host.
Subnet Calculator
Calculate network ranges, masks, and host counts from CIDR blocks.
Routing & ASN Tools
View categoryWeb & TLS Tools
View categoryHTTP Check
Review HTTP response status, headers, and redirect behavior.
HTTPS Check
Verify HTTPS availability, response chain, and TLS handshake basics.
TLS Certificate Check
Inspect certificate validity, issuer chain, and expiry details.
Security Headers Check
Review common browser-facing security headers on a site.