Starting zone checks for tvb.org
Checking zone name
Resolving name-server address-> ns1.xo.com. 245 IN A 207.155.248.16Checking existence of zone-> tvb.org. 10800 IN SOA ns1.xo.com. hostmaster.xo.com. ( 2012022025 ; Serial 10800 ; Refresh 3600 ; Retry 604800 ; Expire 300 ) ; Minimum TTLChecking NS records-> tvb.org. 10800 IN NS ns1.xo.com. -> tvb.org. 10800 IN NS ns2.xo.com. -> tvb.org. 10800 IN NS ns3.xo.com.Checking nameserver authority and synchronization-> ns1.xo.com. 245 IN A 207.155.248.16 -> 16.248.155.207.in-addr.arpa. 10800 IN PTR ns1.xo.com.Probing name server ns1.xo.com (207.155.248.16)-> tvb.org. 10800 IN SOA ns1.xo.com. hostmaster.xo.com. ( 2012022025 ; Serial 10800 ; Refresh 3600 ; Retry 604800 ; Expire 300 ) ; Minimum TTL -> tvb.org. 10800 IN NS ns1.xo.com. -> tvb.org. 10800 IN NS ns2.xo.com. -> tvb.org. 10800 IN NS ns3.xo.com. -> ns3.xo.com. 10800 IN A 207.88.20.31 -> 31.20.88.207.in-addr.arpa. 10800 IN PTR ns3.xo.com. -> 31.20.88.207.in-addr.arpa. 10800 IN PTR ns3.xo.com. -> ns3.xo.com. 10800 IN A 207.88.20.31Probing name server ns3.xo.com (207.88.20.31)-> tvb.org. 10800 IN SOA ns1.xo.com. hostmaster.xo.com. ( 2012022025 ; Serial 10800 ; Refresh 3600 ; Retry 604800 ; Expire 300 ) ; Minimum TTL -> tvb.org. 10800 IN NS ns1.xo.com. -> tvb.org. 10800 IN NS ns2.xo.com. -> tvb.org. 10800 IN NS ns3.xo.com. -> ns2.xo.com. 10800 IN A 207.155.252.16 -> 16.252.155.207.in-addr.arpa. 10800 IN PTR ns2.xo.com.Probing name server ns2.xo.com (207.155.252.16)-> tvb.org. 10800 IN SOA ns1.xo.com. hostmaster.xo.com. ( 2012022025 ; Serial 10800 ; Refresh 3600 ; Retry 604800 ; Expire 300 ) ; Minimum TTL -> tvb.org. 10800 IN NS ns1.xo.com. -> tvb.org. 10800 IN NS ns2.xo.com. -> tvb.org. 10800 IN NS ns3.xo.com.Decided to use ns1.xo.com (207.155.248.16) for zone check
Checking whether ns1.xo.com knows an A record for its own name-> ns1.xo.com. 245 IN A 207.155.248.16Checking whether ns1.xo.com is able to reverse-map its own IP address
Checking connectivity with other nameservers
### Warning: ns1.xo.com is unable to resolve www.ucw.cz (maybe it's non-recursive)
### Warning: ns1.xo.com is unable to resolve atrey.karlin.mff.cuni.cz (maybe it's non-recursive)
### Warning: ns1.xo.com is unable to resolve www.ibiblio.org (maybe it's non-recursive)
Checking mapping of localhost
### Warning: ns1.xo.com is unable to resolve localhost [see RFC1912:4.1 for details]
### Warning: Reverse mapping of 127.0.0.1 at ns1.xo.com doesn't work [see RFC1912:4.1 for details]
Checking consistency of zone records
Summary: 0 errors, 5 warnings