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