Lookup domain:

  IPv4 IPv6
Web services (record for www.<domain>)
www.sibs.ac.cn
yes
Alternative record for web over IPv6
Mail services (MX record) yes yes
Support for SPF (Sender Policy Framework) no
DNS services (NS record) yes (since 2014-07-06)
Support for DNSSEC (DS record) no
Inserted into database 2012-08-03 13:38:41+00
Last update 2016-06-13 02:08:53+00

 

History for sibs.ac.cn

web altweb mx spf ns dnssec
first check v4only dual yes v4only
2012-11-26 v4only dual
2012-11-29 v4only dual yes v4only
2014-07-06 v4only dual yes dual
2014-07-06 v4only dual yes dual
2014-08-01 v4only dual yes v4only
2014-08-20 v4only dual yes v4only
2014-08-24 v4only dual yes v4only
2014-08-24 v4only dual yes v4only
2014-09-02 v4only dual yes dual
2014-09-16 v4only dual yes dual
2014-09-19 v4only dual yes dual
2014-10-16 v4only dual yes v4only
2014-10-30 v4only dual yes v4only
2015-03-30 v4only dual yes dual
2015-04-01 v4only dual yes dual
2015-04-01 v4only dual yes dual
2015-04-02 v4only dual yes dual
2016-06-13 v4only dual v6only
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