Searching for 20.152.171.159.in-addr.arpa. PTR record at I.ROOT-SERVERS.NET. [192.36.148.17]
...took 12 ms
Searching for 20.152.171.159.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 14 ms
Searching for 20.152.171.159.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 14 ms
Searching for x.arin.net. A record at B.ROOT-SERVERS.NET. [192.228.79.201]
...took 69 ms
Searching for x.arin.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 11 ms
Searching for x.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 152 ms
Searching for 20.152.171.159.in-addr.arpa. PTR record at x.arin.net. [199.180.180.63]
...took 155 msSearching for x.arin.net. A record at j.gtld-servers.net. [192.48.79.30] ...took 11 ms
Searching for x.arin.net. A record at ns3.arin.net. [199.5.26.108] ...took 152 ms
Searching for dns01.tdc.no. A record at M.ROOT-SERVERS.NET. [202.12.27.33]
...took 14 ms
Searching for dns01.tdc.no. A record at x.nic.no. [128.39.8.40] ...took 26 ms
Searching for dns01.tdc.no. A record at dns03.tdc.no. [217.68.109.50] ...took 32 ms
SERVFAIL
Searching for dns01.tdc.no. A record at dns02.tdc.no. [213.236.144.150] ...took 25 ms
Searching for 20.152.171.159.in-addr.arpa. PTR record at dns01.tdc.no. [85.19.210.250]
...took 28 msSearching for dns01.tdc.no. A record at x.nic.no. [128.39.8.40] ...took 26 ms
Searching for dns01.tdc.no. A record at dns03.tdc.no. [217.68.109.50] ...took 32 ms
SERVFAIL
Searching for dns01.tdc.no. A record at dns02.tdc.no. [213.236.144.150] ...took 25 ms
Nameserver dns01.tdc.no. reports: No such host 20.152.171.159.in-addr.arpa.
Total elapsed query time: 538 ms