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When I do:

ping www.google.com

it comes back with a response

PING www.google.com (172.253.122.147): 56 data bytes

So this means www.google.com resolves to 172.253.122.147.

What command(s) can I run to determine the reverse (i.e. given 172.253.122.147, it spits out www.google.com ) ?

user1068636
  • 143

1 Answers1

1

What command(s) can I run to determine the reverse (i.e. given 172.253.122.147, it spits out www.google.com)

Normally you would use Nslookup - Name server lookup - Windows CMD - SS64.com, but in this case the answer is not what you are looking for:

F:\test>nslookup 172.253.122.147
Server:  UnKnown
Address:  192.168.249.155

Name:    bh-in-f147.1e100.net
Address:  172.253.122.147

bh-in-f147.1e100.net is a name server and does not have a website associated with it. It belongs to Google:

Hostname                Type TTL Priority Content
bh-in-f147.1e100.net    SOA  60           ns1.google.com dns-admin@google.com 54750970 900 900 1800 60
bh-in-f147.1e100.net    A    3600         172.253.122.147
bh-in-f147.1e100.net    AAAA 3600         2607:f8b0:4004:c09::93

You can also trywhois. There is an online version at WHOIS Search, Domain Name, Website, and IP Tools - Who.is which tells you that this address belongs to Google:

NetRange:       172.253.0.0 - 172.253.255.255
CIDR:           172.253.0.0/16
NetName:        GOOGLE
NetHandle:      NET-172-253-0-0-1
Parent:         NET172 (NET-172-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       AS15169
Organization:   Google LLC (GOGL)
RegDate:        2013-04-04
Updated:        2013-04-04
Ref:            https://rdap.arin.net/registry/ip/172.253.0.0
DavidPostill
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