ns6.hpe.com has no NS records.
NS records for this zone are defined at hpe.com.
NS records for this zone are defined at hpe.com.
Question and response
Question
dig ns6.hpe.com. NS
Answer
The response has no answer records.
Authority
hpe.com. 900 SOA cha08hpeibdns0a.ams.hpecore.net. ddi-hostmaster.groups.ext.hpe.com. 443244095 3600 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0