Zone apex
Start of authority
Email
Serial
2026021901
Refresh
10m
Retry
10m
Expire
7d
Negative cache TTL
10m
Question and response
Question
dig smtp-3.sys.kth.se. SOA
Answer
The response has no answer records.
Authority
sys.kth.se. 600 SOA a.ns.kth.se. hostmaster.kth.se. 2026021901 600 600 604800 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0