Zone apex
Start of authority
Email
Serial
2511171675
Refresh
20m
Retry
2m 24s
Expire
21d
Negative cache TTL
2h
Question and response
Question
dig _spf.protonmail.ch. SOA
Answer
The response has no answer records.
Authority
protonmail.ch. 1200 SOA ns1.protonmail.ch. support.protonmail.ch. 2511171675 1200 144 1814400 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0