Microsoft, DNS, and 192.168.1.0

[sfx2000]

This is pretty interesting...

% nslookup
> microsoft.com
Server:        fe80::3c8f:::*
Address:    fe80::3c8f:::53

Non-authoritative answer:
Name:    microsoft.com
Address: 20.112.250.133
Name:    microsoft.com
Address: 20.231.239.246
Name:    microsoft.com
Address: 20.76.201.171
Name:    microsoft.com
Address: 20.70.246.20
Name:    microsoft.com
Address: 20.236.44.162
Name:    microsoft.com
Address: 192.168.1.0

 

[Justinh]

Very interesting. So what would be the practical impact of this?

 

[sfx2000]

Very interesting. So what would be the practical impact of this?

Looks like they fixed it - having an RFC1918 address in public DNS is never good...

$ nslookup
> microsoft.com
Server:        127.0.0.53
Address:    127.0.0.53#53

Non-authoritative answer:
Name:    microsoft.com
Address: 20.112.250.133
Name:    microsoft.com
Address: 20.231.239.246
Name:    microsoft.com
Address: 20.76.201.171
Name:    microsoft.com
Address: 20.70.246.20
Name:    microsoft.com
Address: 20.236.44.162
Name:    microsoft.com
Address: 2603:1030:b:3::152
Name:    microsoft.com
Address: 2603:1030:20e:3::23c
Name:    microsoft.com
Address: 2603:1030:c02:8::14
Name:    microsoft.com
Address: 2603:1020:201:10::10f
Name:    microsoft.com
Address: 2603:1010:3:3::5b

 

[RMerlin]

This is pretty interesting...

% nslookup
> microsoft.com
Server:        fe80::3c8f:::*
Address:    fe80::3c8f:::53

Non-authoritative answer:
Name:    microsoft.com
Address: 20.112.250.133
Name:    microsoft.com
Address: 20.231.239.246
Name:    microsoft.com
Address: 20.76.201.171
Name:    microsoft.com
Address: 20.70.246.20
Name:    microsoft.com
Address: 20.236.44.162
Name:    microsoft.com
Address: 192.168.1.0

Someone plugged their Linksys router in the server cabinet because their cell had trouble reaching the office Wifi probably?

 

[coxhaus]

This is pretty interesting...

% nslookup
> microsoft.com
Server:        fe80::3c8f:::*
Address:    fe80::3c8f:::53

Non-authoritative answer:
Name:    microsoft.com
Address: 20.112.250.133
Name:    microsoft.com
Address: 20.231.239.246
Name:    microsoft.com
Address: 20.76.201.171
Name:    microsoft.com
Address: 20.70.246.20
Name:    microsoft.com
Address: 20.236.44.162
Name:    microsoft.com
Address: 192.168.1.0

Yes, interesting. It is not reachable as you cannot route private IP addresses on the public internet as they are dropped. It had to be a typo on a DNS entry.