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Hostname or IP Type  
Searching for 137.4.255.220.in-addr.arpa. PTR record at D.ROOT-SERVERS.NET. [199.7.91.13] ...took 2 ms
Searching for 137.4.255.220.in-addr.arpa. PTR record at e.in-addr-servers.arpa. [203.119.86.101] ...took 309 ms
Searching for ns4.apnic.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129] ...took 1 ms
Searching for ns4.apnic.net. A record at l.gtld-servers.net. [192.41.162.30] ...took 92 ms
Searching for ns4.apnic.net. A record at ns4.apnic.com. [202.12.31.140] ...took 255 ms
Searching for 137.4.255.220.in-addr.arpa. PTR record at ns4.apnic.net. [202.12.31.140] ...took 260 ms
Searching for dnssec1.singnet.com.sg. A record at E.ROOT-SERVERS.NET. [192.203.230.10] ...took 1 ms
Searching for dnssec1.singnet.com.sg. A record at sg-ns.anycast.pch.net. [204.61.216.57] ...took 1 ms
Searching for dnssec1.singnet.com.sg. A record at dnssec2.singnet.com.sg. [195.13.10.226] ...took 8 ms
Searching for 137.4.255.220.in-addr.arpa. PTR record at dnssec1.singnet.com.sg. [165.21.83.11] ...took 275 ms

Nameserver dnssec1.singnet.com.sg. reports: No such host 137.4.255.220.in-addr.arpa.



Total elapsed query time: 1,204 ms