mail4.dllstx09.us.to.gin.ntt.net has no NS records.
NS records for this zone are defined at dllstx09.us.to.gin.ntt.net.
NS records for this zone are defined at dllstx09.us.to.gin.ntt.net.
Question and response
Question
dig mail4.dllstx09.us.to.gin.ntt.net. NS
Answer
The response has no answer records.
Authority
dllstx09.us.to.gin.ntt.net. 3600 SOA ipam01.dllstx09.us.to.gin.ntt.net. dns-tech.gin.ntt.net. 2021011230 86400 3600 2592000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0