FortiView Sources Dashboard: Private IP Translates to .JP Domain

[Eriock]

Why does my FortiView Sources Dashboard show the private IP in my network translates to a Domain totally unrelated to my network?

example source:

2563012-ipngn11301souka.saitama.ocn.ne.jp (180.0.1.12)

p2563059-ipngn11301souka.saitama.ocn.ne.jp (180.0.1.59)

p2563029-ipngn11301souka.saitama.ocn.ne.jp (180.0.1.29)

[Toshi_Esumi]

It's not in RFC 1918 range. They're public IPs officially owned by NTT Communications. Check those IPs at one of WHOIS-IP sites like below:

https://www.whatismyip.com/ip-whois-lookup/

[lobstercreed]

I get the same DNS result if I lookup those IPs, so I'm not sure how unrelated to your network that domain could be...  Are you sure you're using those IPs?