a1-192.akamaiedge.net has no NS records.
NS records for this zone are defined at akamaiedge.net.
NS records for this zone are defined at akamaiedge.net.
Question and response
Question
dig a1-192.akamaiedge.net. NS
Answer
The response has no answer records.
Authority
akamaiedge.net. 180 SOA internal.akamaiedge.net. hostmaster.akamai.com. 1559044082 90000 90000 90000 180
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0