Hostname or IP
Type
DNSWatch > Reverse DNS Lookup for 156.145.184.179
Searching for 179.184.145.156.in-addr.arpa. PTR record at E.ROOT-SERVERS.NET. [192.203.230.10] ...took 21 ms
Searching for 179.184.145.156.in-addr.arpa. PTR record at b.in-addr-servers.arpa. [199.253.183.183] ...took 6 ms
Searching for arin.authdns.ripe.net. A record at C.ROOT-SERVERS.NET. [192.33.4.12] ...took 12 ms
Searching for arin.authdns.ripe.net. A record at c.gtld-servers.net. [192.26.92.30] ...took 20 ms
Searching for arin.authdns.ripe.net. A record at ns3.lacnic.net. [200.3.13.14] ...took 205 ms
Searching for 179.184.145.156.in-addr.arpa. PTR record at arin.authdns.ripe.net. [193.0.9.10] ...took 11 ms
Searching for dns1.cpmc.columbia.edu. A record at C.ROOT-SERVERS.NET. [192.33.4.12] ...took 11 ms
Searching for dns1.cpmc.columbia.edu. A record at h.edu-servers.net. [192.54.112.30] ...took 7 ms
Searching for ns1.lse.ac.uk. A record at K.ROOT-SERVERS.NET. [193.0.14.129] ...took 30 ms
Searching for ns1.lse.ac.uk. A record at dns1.nic.uk. [213.248.216.1] ...took 20 ms
Searching for ns1.surfnet.nl. A record at C.ROOT-SERVERS.NET. [192.33.4.12] ...took 11 ms
Searching for ns1.surfnet.nl. A record at ns1.dns.nl. [194.0.28.53] ...took 7 ms
Searching for ns1.zurich.surf.net. A record at C.ROOT-SERVERS.NET. [192.33.4.12] ...took 11 ms
Searching for ns1.zurich.surf.net. A record at m.gtld-servers.net. [192.55.83.30] ...took 12 ms
Searching for ns1.zurich.surf.net. A record at ns2.surfnet.nl. [192.87.36.2] ...took 14 ms
Searching for ns1.surfnet.nl. A record at ns1.zurich.surf.net. [195.176.255.9] ...took 12 ms
Searching for ns1.lse.ac.uk. A record at ns1.surfnet.nl. [192.87.106.101] ...took 12 ms
Searching for ns1.lse.ac.uk. A record at ext-ns1.columbia.edu. [128.59.1.1] ...took 94 ms
Searching for dns1.cpmc.columbia.edu. A record at ns1.lse.ac.uk. [158.143.96.8] ...took 24 ms
Searching for ns2.nyp.org. A record at E.ROOT-SERVERS.NET. [192.203.230.10] ...took 34 ms
Searching for ns2.nyp.org. A record at a0.org.afilias-nst.info. [199.19.56.1] ...took 12 ms
Searching for ns2.nyp.org. A record at ns2.nyp.org. [143.104.238.11] ...took 99 ms
Searching for dns1.cpmc.columbia.edu. A record at ns2.nyp.org. [143.104.238.11] ...took 99 ms
Searching for dns1.cpmc.columbia.edu. AAAA record at J.ROOT-SERVERS.NET. [192.58.128.30] ...took 30 ms
Searching for dns1.cpmc.columbia.edu. AAAA record at g.edu-servers.net. [192.42.93.30] ...took 7 ms
Searching for auth2.dns.cogentco.com. A record at K.ROOT-SERVERS.NET. [193.0.14.129] ...took 30 ms
Searching for auth2.dns.cogentco.com. A record at e.gtld-servers.net. [192.12.94.30] ...took 21 ms
Searching for auth2.dns.cogentco.com. A record at auth1.dns.cogentco.com. [66.28.0.14] ...took 11 ms
Searching for dns1.cpmc.columbia.edu. AAAA record at auth2.dns.cogentco.com. [66.28.0.30] ...took 11 ms
Searching for dns1.cpmc.columbia.edu. AAAA record at ext-ns1.columbia.edu. [128.59.1.1] ...took 93 ms

Nameserver ext-ns1.columbia.edu. reports: No such host dns1.cpmc.columbia.edu.



Total elapsed query time: 987 ms
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