Question and response
Question
dig mail.obtelecom.ru. NS
Answer
mail.obtelecom.ru. 5 CNAME ghs.google.com.
Authority
google.com. 60 SOA ns1.google.com. dns-admin.google.com. 879012124 900 900 1800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0