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  IPv4 IPv6
Web services (record for www.<domain>)
www.fdfz.cn
yes (since 2014-12-29)
Alternative record for web over IPv6
Mail services (MX record) yes (since 2015-01-07) yes (since 2014-12-24)
Support for SPF (Sender Policy Framework) yes (since 2015-01-07)
DNS services (NS record) yes (since 2016-06-13)
Support for DNSSEC (DS record) no
Inserted into database 2014-12-17 00:44:25+00
Last update 2016-06-13 13:36:31+00

 

History for fdfz.cn

web altweb mx spf ns dnssec
first check yes v4only
2014-12-24 v6only yes v4only
2014-12-29 v4only yes
2015-01-02 v4only
2015-01-07 v4only v4only yes v4only
2015-01-13 dual yes
2015-01-21 v4only dual yes v4only
2015-01-22 v4only dual yes v4only
2015-01-29 v4only v4only yes
2015-02-04 v4only dual yes
2015-02-05 dual yes v4only
2015-02-11 v4only dual yes v4only
2015-02-12 yes v4only
2015-02-18 v4only dual yes v4only
2015-02-19 v4only dual yes v4only
2015-02-26 v4only v4only yes v4only
2015-03-01 v4only v6only yes v4only
2015-03-10 v4only v4only
2015-03-11 v4only v4only yes
2015-03-13 v4only
2015-03-22 v4only dual
2015-03-24 v4only v4only
2015-03-31 v4only yes
2016-06-13 v4only dual yes v6only
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