Question and response
Question
dig sap. NS
Answer
sap. 86400 NS anycast24.irondns.net.
sap. 86400 NS anycast10.irondns.net.
sap. 86400 NS anycast23.irondns.net.
sap. 86400 NS anycast9.irondns.net.
Authority
sap. 86400 SOA anycast9.irondns.net. dnsmaster.irondns.net. 2602231119 7200 7200 604800 7200
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0