ad8.ad.ucla.edu has no NS records.
NS records for this zone are defined at ad.ucla.edu.
NS records for this zone are defined at ad.ucla.edu.
Question and response
Question
dig ad8.ad.ucla.edu. NS
Answer
The response has no answer records.
Authority
ad.ucla.edu. 3600 SOA ad9.ad.ucla.edu. hostmaster.ad.ucla.edu. 211401 900 600 86400 3600
Additional
. 0 OPT ; payload 1224, xrcode 0, version 0, flags 0