A customized DNS relay server
Simple DNS proxy with DoH, DoT, DoQ and DNSCrypt support
Detects which DNS server is being used - https://which.nameserve.rs/
DNS stub resolver, proxy and router with support for DoT, DoH, DoQ, and DTLS
Puredns is a fast domain resolver and subdomain bruteforcing tool that can accurately filter out wildcard subdomains and DNS poisoned entries.
ASN / RPKI validity / BGP stats / IPv4v6 / Prefix / URL / ASPath / Organization / IP reputation and geolocation lookup tool / Traceroute server
DNSTake — A fast tool to check missing hosted DNS zones that can lead to subdomain takeover
CoreDNS is a DNS server that chains plugins