Starting zone checks for giasuductri.edu.vn
Checking zone name
Resolving name-server address-> ns2.giasuductri.edu.vn. 360 IN A 112.78.6.32Checking existence of zone-> giasuductri.edu.vn. 86400 IN SOA ns1.digipowerdns.com. monitor.digipower.vn. ( 2011112901 ; Serial 86400 ; Refresh 7200 ; Retry 3600000 ; Expire 86400 ) ; Minimum TTLChecking NS records-> giasuductri.edu.vn. 86400 IN NS ns3.digipowerdns.com. -> giasuductri.edu.vn. 86400 IN NS ns4.digipowerdns.com. -> giasuductri.edu.vn. 86400 IN NS ns1.digipowerdns.com. -> giasuductri.edu.vn. 86400 IN NS ns2.digipowerdns.com.Checking nameserver authority and synchronization-> ns2.giasuductri.edu.vn. 360 IN A 112.78.6.32### Error: ns2.giasuductri.edu.vn (112.78.6.32) has no reverse record [see RFC1912:2.1 for details]
Probing name server ns2.giasuductri.edu.vn (112.78.6.32)-> giasuductri.edu.vn. 86400 IN SOA ns1.digipowerdns.com. monitor.digipower.vn. ( 2011112901 ; Serial 86400 ; Refresh 7200 ; Retry 3600000 ; Expire 86400 ) ; Minimum TTL -> giasuductri.edu.vn. 86400 IN NS ns3.digipowerdns.com. -> giasuductri.edu.vn. 86400 IN NS ns4.digipowerdns.com. -> giasuductri.edu.vn. 86400 IN NS ns1.digipowerdns.com. -> giasuductri.edu.vn. 86400 IN NS ns2.digipowerdns.com.### Error: Nameserver ns1.digipowerdns.com doesn't have any valid A records
### Error: Nameserver ns2.digipowerdns.com doesn't have any valid A records
### Error: Nameserver ns4.digipowerdns.com doesn't have any valid A records
### Error: Nameserver ns3.digipowerdns.com doesn't have any valid A records
Decided to use ns2.giasuductri.edu.vn (112.78.6.32) for zone check
Checking whether ns2.giasuductri.edu.vn knows an A record for its own name-> ns2.giasuductri.edu.vn. 360 IN A 112.78.6.32Checking whether ns2.giasuductri.edu.vn is able to reverse-map its own IP address
Checking connectivity with other nameservers
### Warning: ns2.giasuductri.edu.vn is unable to resolve www.ucw.cz (maybe it's non-recursive)
### Warning: ns2.giasuductri.edu.vn is unable to resolve atrey.karlin.mff.cuni.cz (maybe it's non-recursive)
### Warning: ns2.giasuductri.edu.vn is unable to resolve www.ibiblio.org (maybe it's non-recursive)
Checking mapping of localhost
### Warning: ns2.giasuductri.edu.vn is unable to resolve localhost [see RFC1912:4.1 for details]
### Warning: Reverse mapping of 127.0.0.1 at ns2.giasuductri.edu.vn doesn't work [see RFC1912:4.1 for details]
Checking consistency of zone records
Summary: 5 errors, 5 warnings