I've read the below thing, in a website.
According to standards set forth in Internet Engineering Task Force (IETF) document RFC-1918 , the following IPv4 address ranges are reserved by the IANA for private internets, and are not publicly routable on the global internet:
10.0.0.0/8 IP addresses: 10.0.0.0 – 10.255.255.255 172.16.0.0/12 IP addresses: 172.16.0.0 – 172.31.255.255 192.168.0.0/16 IP addresses: 192.168.0.0 – 192.168.255.255
My doubt is
- Should private addresses be only from the above mentioned ip range or can they have any ip address range?
- Can public ip address be from the above mentioned ip addresses ? If so then will that be valid in the internet?
- Can I tell 100% by looking at the ip address as they're private if they fall in the above ip address range?