SOA
Start of Authority
Primary NS
Mailbox
tech.key-systems.net
Serial
2026033102
Refresh
10800
Retry
3600
Expire
604800
Minimum TTL
28800
TXT
TXT Records
v=spf1 include:_spf.protonmail.ch ~all
protonmail-verification=85393f0920b4dee7f1213e0c69b360dac0505389