sslproxy.us1.gigya.com has no NS records.
NS records for this zone are defined at gigya.com.
NS records for this zone are defined at gigya.com.
Question and response
Question
dig lb-cf.us1.gigya.com. NS
Answer
The response has no answer records.
Authority
gigya.com. 900 SOA ns-1877.awsdns-42.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0