Zone apex
Start of authority
Email
Serial
2013012202
Refresh
2h
Retry
1h
Expire
7d
Negative cache TTL
1d
Question and response
Question
dig sub128.124.253.145.in-addr.arpa. SOA
Answer
sub128.124.253.145.in-addr.arpa. 300 SOA ns4.sophos.com. hostmaster.sophos.com. 2013012202 7200 3600 604800 86400
Authority
sub128.124.253.145.in-addr.arpa. 3600 NS ns2.sophos.com.
sub128.124.253.145.in-addr.arpa. 3600 NS ns4.sophos.com.
Additional
ns2.sophos.com. 300 A 198.144.101.29
ns4.sophos.com. 300 A 195.171.192.165
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0