a3-193.akamaitech.net has no NS records.
NS records for this zone are defined at akamaitech.net.
NS records for this zone are defined at akamaitech.net.
Question and response
Question
dig a3-193.akamaitech.net. NS
Answer
The response has no answer records.
Authority
akamaitech.net. 180 SOA internal.akamaitech.net. hostmaster.akamai.com. 1698937200 90000 90000 90000 180
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0