a7-65.akam.net has no NS records.
NS records for this zone are defined at akam.net.
NS records for this zone are defined at akam.net.
Question and response
Question
dig a7-65.akam.net. NS
Answer
The response has no answer records.
Authority
akam.net. 180 SOA internal.akam.net. hostmaster.akamai.com. 1712081400 90000 90000 90000 180
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0