Question and response
Question
dig mail5.nrw.net. NS
Answer
mail5.nrw.net. 5 CNAME mail5.server.csl.de.
Authority
csl.de. 300 SOA a.ns.nrw.net. hostmaster.joker.com. 2026030648 14400 3600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0