What this tool does
Enter a domain and pick a record type, and SYNAPSE queries it from both Google and Cloudflare public resolvers. You get every matching record with its TTL, whether the two resolvers agree, and whether the response is DNSSEC-authenticated. It's the quick online equivalent of dig or nslookup, with no client to install.
Frequently asked questions
Which record types can I look up?
A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, and PTR. Pick the type from the dropdown and SYNAPSE resolves it for you.
Why query two resolvers?
Different resolvers can have different cached answers, especially right after a change. Comparing Google and Cloudflare shows whether the record is consistent everywhere or still propagating.
What is TTL?
Time to live is how long a resolver caches a record before re-fetching it. Lower TTLs propagate changes faster; higher TTLs reduce DNS traffic but slow updates.