## DNS Calculator Do simple mathematical operations using DNS queries. $ dig @ns.dus.kyouma.net +short txt 1-a-4-m-50-d-250.calc.emily.cat "1.8" $ dig +short txt calc.help.emily.cat "operators are a (add), s (subtract), m (multiply), and d (divide)." "separate tokens with '-' or '.'" It should work on every DNS server but sometimes it’s buggy. If you don’t get a result try to specify ns.dus.kyouma.net as nameserver.