ADDR.TOOLS. Domain Name System ADDR.TOOLS.
INDEX
[https://dnscheck.tools] - identifies your dns resolvers, checks dnssec validation, and more
[https://challenges.addr.tools] - dns-01 ACME challenge helper zone
[https://info.addr.tools] - explore identifying information for domain names and IP addresses
[https://ip.addr.tools] - construct domain names that resolve to any given IP address
CONTACT
On reddit, [u/dnschecktool]