Question and response
Question
dig login.microsoftonline.com. NS
Answer
login.microsoftonline.com. 5 CNAME login.mso.msidentity.com.
login.mso.msidentity.com. 5 CNAME ak.privatelink.msidentity.com.
ak.privatelink.msidentity.com. 5 CNAME www.tm.a.prd.aadg.akadns.net.
Authority
akadns.net. 161 SOA internal.akadns.net. hostmaster.akamai.com. 1741200000 90000 90000 90000 180
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0