Unable to find any PTR-records for the specified domain/ip :(
Log
+000
Resolving PTR record of '157.254.49.0'
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ERRNo PTR record availible DNS server 'ns1-02.azure-dns.com' raised an NotExistentDomain error, while beeing queried for PTR-records on domain '0.49.254.157.in-addr.arpa'.