www.equinix.com has no NS records.
NS records for this zone are defined at equinix.com.
NS records for this zone are defined at equinix.com.
Question and response
Question
dig e13414.b.akamaiedge.net. NS
Answer
The response has no answer records.
Authority
b.akamaiedge.net. 1000 SOA n0b.akamaiedge.net. hostmaster.akamai.com. 1773248898 1000 1000 1000 1800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0