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Hostname or IP Type  
Searching for 237.172.158.81.in-addr.arpa. PTR record at C.ROOT-SERVERS.NET. [192.33.4.12] ...took 3 ms
Searching for 237.172.158.81.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 10 ms
Searching for sec1.apnic.net. A record at C.ROOT-SERVERS.NET. [192.33.4.12] ...took 3 ms
Searching for sec1.apnic.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 260 ms
Searching for sec1.apnic.net. A record at ns4.apnic.net. [202.12.31.140] ...took 274 ms
Searching for 237.172.158.81.in-addr.arpa. PTR record at sec1.apnic.net. [202.12.29.59] ...took 312 ms
Searching for ns0.bt.net. A record at B.ROOT-SERVERS.NET. [192.228.79.201] ...took 149 ms
Searching for ns0.bt.net. A record at k.gtld-servers.net. [192.52.178.30] ...took 1 ms
Searching for ns0.bt.net. A record at ns1.bt.net. [217.32.105.91] ...took 21 ms
Searching for 237.172.158.81.in-addr.arpa. PTR record at ns0.bt.net. [217.35.209.188] ...took 27 ms
Searching for 237.172.158.81.in-addr.arpa. PTR record at ns20.bt.net. [194.72.6.99] ...took 17 ms
DomainTypeTTLAnswer
237.172.158.81.in-addr.arpa.PTR604800host81-158-172-237.range81-158.btcentralplus.com.



Total elapsed query time: 1,077 ms