Zone apex
Start of authority
Email
Serial
2022897802
Refresh
3h
Retry
1h
Expire
30d
Negative cache TTL
15m
Question and response
Question
dig _s0.caltech.edu. SOA
Answer
The response has no answer records.
Authority
caltech.edu. 900 SOA ns0090.secondary.cloudflare.com. hostmaster.caltech.edu. 2022897802 10800 3600 2592000 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0