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Starting zone checks for tsinghua.org.uk

Checking zone name

Resolving name-server address
    -> ns29.websiteswelcome.com.	172799	IN	A	74.86.248.128
Checking existence of zone
    -> tsinghua.org.uk.	86400	IN	SOA	ns29.websiteswelcome.com. root.rs15.websiteswelcome.com. (
					2009022700	; Serial
					86400	; Refresh
					7200	; Retry
					3600000	; Expire
					86400 )	; Minimum TTL
Checking NS records
    -> tsinghua.org.uk.	86400	IN	NS	ns30.websiteswelcome.com.
    -> tsinghua.org.uk.	86400	IN	NS	ns29.websiteswelcome.com.
Checking nameserver authority and synchronization
    -> ns29.websiteswelcome.com.	172799	IN	A	74.86.248.128
### Error: ns29.websiteswelcome.com (74.86.248.128) has no reverse record  [see RFC1912:2.1 for details]

Probing name server ns29.websiteswelcome.com (74.86.248.128)
    -> tsinghua.org.uk.	86400	IN	SOA	ns29.websiteswelcome.com. root.rs15.websiteswelcome.com. (
					2009022700	; Serial
					86400	; Refresh
					7200	; Retry
					3600000	; Expire
					86400 )	; Minimum TTL
    -> tsinghua.org.uk.	86400	IN	NS	ns30.websiteswelcome.com.
    -> tsinghua.org.uk.	86400	IN	NS	ns29.websiteswelcome.com.
    -> ns30.websiteswelcome.com.	14400	IN	A	74.86.248.129
### Error: ns30.websiteswelcome.com (74.86.248.129) has no reverse record  [see RFC1912:2.1 for details]

Probing name server ns30.websiteswelcome.com (74.86.248.129)
    -> tsinghua.org.uk.	86400	IN	SOA	ns29.websiteswelcome.com. root.rs15.websiteswelcome.com. (
					2009022700	; Serial
					86400	; Refresh
					7200	; Retry
					3600000	; Expire
					86400 )	; Minimum TTL
    -> tsinghua.org.uk.	86400	IN	NS	ns30.websiteswelcome.com.
    -> tsinghua.org.uk.	86400	IN	NS	ns29.websiteswelcome.com.
Decided to use ns29.websiteswelcome.com (74.86.248.128) for zone check

Checking whether ns29.websiteswelcome.com knows an A record for its own name
    -> ns29.websiteswelcome.com.	172799	IN	A	74.86.248.128
Checking whether ns29.websiteswelcome.com is able to reverse-map its own IP address

Checking connectivity with other nameservers

### Warning: ns29.websiteswelcome.com is unable to resolve www.ucw.cz (maybe it's non-recursive)

### Warning: ns29.websiteswelcome.com is unable to resolve atrey.karlin.mff.cuni.cz (maybe it's non-recursive)

### Warning: ns29.websiteswelcome.com is unable to resolve www.google.com (maybe it's non-recursive)

Checking mapping of localhost

### Warning: ns29.websiteswelcome.com is unable to resolve localhost  [see RFC1912:4.1 for details]

### Warning: Reverse mapping of 127.0.0.1 at ns29.websiteswelcome.com doesn't work  [see RFC1912:4.1 for details]

Fetching zone data for tsinghua.org.uk

### Error: Zone transfer failed

### Fatal error: No name server available for checking