a85.rackcdn.com.mdc.edgesuite.net has no NS records.
NS records for this zone are defined at edgesuite.net.
NS records for this zone are defined at edgesuite.net.
Question and response
Question
dig a87.dscg10.akamai.net. NS
Answer
The response has no answer records.
Authority
dscg10.akamai.net. 1000 SOA n0dscg10.akamai.net. hostmaster.akamai.com. 1773476138 1000 1000 1000 1800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0