dns.google SOA records

SOA Start of authority
6h
Zone apex
Start of authority
Email
[email protected]
Serial
1
Refresh
6h
Retry
1h
Expire
3d
Negative cache TTL
5m

Question and response

Question

dig dns.google. SOA

Answer

dns.google. 21600 SOA ns1.zdns.google. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300

Authority

dns.google. 21600 NS ns2.zdns.google. dns.google. 21600 NS ns3.zdns.google. dns.google. 21600 NS ns1.zdns.google. dns.google. 21600 NS ns4.zdns.google.

Additional

. 0 OPT ; payload 512, xrcode 0, version 0, flags 0