Zone apex
Start of authority
Email
Serial
76
Refresh
3h
Retry
1h
Expire
28d
Negative cache TTL
15m
Question and response
Question
dig host.ucla.edu. SOA
Answer
host.ucla.edu. 28800 SOA ib00f2.csb1.ucla.net. hostmaster.ucla.edu. 76 10800 3600 2419200 900
Authority
host.ucla.edu. 28800 NS ns1.dns.ucla.edu.
host.ucla.edu. 28800 NS ns3.dns.ucla.edu.
host.ucla.edu. 28800 NS ns4.dns.ucla.edu.
host.ucla.edu. 28800 NS ns2.dns.ucla.edu.
Additional
ns3.dns.ucla.edu. 28800 A 54.236.209.157
ns4.dns.ucla.edu. 28800 A 3.104.50.254
ns1.dns.ucla.edu. 28800 A 192.35.225.7
ns2.dns.ucla.edu. 28800 A 54.201.38.106
ns3.dns.ucla.edu. 28800 AAAA 2600:1f18:21d4:e000:0:0:0:53
ns4.dns.ucla.edu. 28800 AAAA 2406:da1c:e21:8600:0:0:0:53
ns1.dns.ucla.edu. 28800 AAAA 2607:f010:3fe:12:0:ff:fe01:35
ns2.dns.ucla.edu. 28800 AAAA 2600:1f14:793:a600:0:0:0:53
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0