SOA
Start of Authority
Primary NS
Mailbox
sa.dudns.com
Serial
2018080154
Refresh
3600
Retry
300
Expire
2592000
Minimum TTL
120
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
1ff390c5ddfb3199093ab81d77f13c09
v=spf1 include:spf.163.com -all
A
IPv4 Addresses
CNAME