Starting zone checks for harpo.nl
Checking zone name
Resolving name-server address-> ns1.dn-s.nl. 67 IN A 85.158.251.251Checking existence of zone-> harpo.nl. 14400 IN SOA ns1.dn-s.nl. nic.virtualregistrar.nl. ( 2009081501 ; Serial 28800 ; Refresh 7200 ; Retry 604800 ; Expire 14400 ) ; Minimum TTLChecking NS records-> harpo.nl. 14400 IN NS ns1.dn-s.nl. -> harpo.nl. 14400 IN NS ns2.dn-s.nl.Checking nameserver authority and synchronization-> ns1.dn-s.nl. 67 IN A 85.158.251.251 -> 251.251.158.85.in-addr.arpa. 86400 IN PTR ns1.dn-s.nl.Probing name server ns1.dn-s.nl (85.158.251.251)-> harpo.nl. 14400 IN SOA ns1.dn-s.nl. nic.virtualregistrar.nl. ( 2009081501 ; Serial 28800 ; Refresh 7200 ; Retry 604800 ; Expire 14400 ) ; Minimum TTL -> harpo.nl. 14400 IN NS ns1.dn-s.nl. -> harpo.nl. 14400 IN NS ns2.dn-s.nl. -> ns2.dn-s.nl. 300 IN A 83.96.142.70### Error: ns2.dn-s.nl (83.96.142.70) has no reverse record [see RFC1912:2.1 for details]
Probing name server ns2.dn-s.nl (83.96.142.70)-> harpo.nl. 14400 IN SOA ns1.dn-s.nl. nic.virtualregistrar.nl. ( 2009081501 ; Serial 28800 ; Refresh 7200 ; Retry 604800 ; Expire 14400 ) ; Minimum TTL -> harpo.nl. 14400 IN NS ns1.dn-s.nl. -> harpo.nl. 14400 IN NS ns2.dn-s.nl.Decided to use ns1.dn-s.nl (85.158.251.251) for zone check
Checking whether ns1.dn-s.nl knows an A record for its own name-> ns1.dn-s.nl. 67 IN A 85.158.251.251Checking whether ns1.dn-s.nl is able to reverse-map its own IP address
Checking connectivity with other nameservers
### Warning: ns1.dn-s.nl is unable to resolve www.ucw.cz (maybe it's non-recursive)
### Warning: ns1.dn-s.nl is unable to resolve atrey.karlin.mff.cuni.cz (maybe it's non-recursive)
### Warning: ns1.dn-s.nl is unable to resolve www.ibiblio.org (maybe it's non-recursive)
Checking mapping of localhost
### Warning: ns1.dn-s.nl is unable to resolve localhost [see RFC1912:4.1 for details]
### Error: Unable to resolve 1.0.0.127.in-addr.arpa: SERVFAIL
### Warning: Reverse mapping of 127.0.0.1 at ns1.dn-s.nl doesn't work [see RFC1912:4.1 for details]
Checking consistency of zone records
Summary: 2 errors, 5 warnings