rdaptastic
WhoisAPI
DomainTools
JsonWhois.io
ICANN WHOIS
Active Whois Browser
WebCargo
EZwhois
digga
DNSChecker.org
ViewDNS.info
iamroot.tech
NsLookup.io
Whats My DNS
MxToolBox
What is my IP?
digga helps developers, security researchers, sysadmins and curious users understand the infrastructure behind any domain.
Instead of jumping between separate DNS, WHOIS, RDAP, subdomain and email security tools, digga combines the most important domain research data in one simple interface. Enter a domain, subdomain or URL and get a structured overview of registration data, nameservers, DNS records, subdomains, IP ownership, ASN information and email authentication signals such as SPF, DKIM, DMARC, MTA STS, TLS RPT and BIMI.
digga is useful for debugging deployments, checking domain setups, investigating infrastructure, reviewing email security and quickly understanding who operates the systems behind a domain.
The project is free to use, open source and does not require an account.
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WhoisAPI - WhoisAPI is the premier provider of freshly parsed whois data for domain names and IP addresses...
DNSChecker.org - Check DNS Propagation worldwide. DNS Checker provides name server propagation check instantly. Changed nameservers so do a DNS lookup and check if DNS and nameservers have propagated.
DomainTools - Domain name research, including comprehensive Whois Lookup, Reverse Whois Lookup and Whois History.
ViewDNS.info - Free DNS related tools including Reverse IP Lookup, DNS Propagation Checker, Chinese Firewall Test...
JsonWhois.io - JsonWhois is the leading cloud hosted Whois API.
iamroot.tech - Fast, ad-free toolbox for developers and sysadmins - DNS lookups, propagation checks, port scans, and more. Plus APIs and automated monitoring. Clean, simple, and powerful, with no ads, fluff, or compromise.