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Hostname or IP Type  
Searching for 137.4.255.220.in-addr.arpa. PTR record at L.ROOT-SERVERS.NET. [199.7.83.42] ...took 31 ms
Searching for 137.4.255.220.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 97 ms
Searching for ns3.apnic.net. A record at K.ROOT-SERVERS.NET. [193.0.14.129] ...took 1 ms
Searching for ns3.apnic.net. A record at i.gtld-servers.net. [192.43.172.30] ...took 14 ms
Searching for ns3.apnic.net. A record at ns3.apnic.net. [202.12.28.131] ...took 253 ms
Searching for 137.4.255.220.in-addr.arpa. PTR record at ns3.apnic.net. [202.12.28.131] ...took 259 ms
Searching for dnssec3.singnet.com.sg. A record at M.ROOT-SERVERS.NET. [202.12.27.33] ...took 165 ms
Searching for dnssec3.singnet.com.sg. A record at ns2.cuhk.edu.hk. [137.189.6.21] ...took 214 ms
Searching for dnssec3.singnet.com.sg. A record at dnssec3.singnet.com.sg. [165.21.100.11] ...took 283 ms
Searching for 137.4.255.220.in-addr.arpa. PTR record at dnssec3.singnet.com.sg. [165.21.100.11] ...took 278 ms

Nameserver dnssec3.singnet.com.sg. reports: No such host 137.4.255.220.in-addr.arpa.



Total elapsed query time: 1,595 ms