mrbodnsmaster101.nss.crowncastle.com has no NS records.
NS records for this zone are defined at crowncastle.com.
NS records for this zone are defined at crowncastle.com.
Question and response
Question
dig mrbodnsmaster101.nss.crowncastle.com. NS
Answer
The response has no answer records.
Authority
crowncastle.com. 900 SOA ns-757.awsdns-30.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0