Reserved Network Numbers
lhoward at UU.NET
Tue Mar 25 16:10:20 UTC 1997
The following should be attributed to Geoff White:
> Now for a brief excursion into the totally mundane.
> Can anyone point me to the internet-draft/RFC that
> specifies the "reserverd networks" (i.e. the class A,B, & C [sic]
> network numbers that are considered "safe" (no-one should be routing them)
> to use as test/intranet/private IP networks?
> I need to know all of the numbers, i.e. I believe 10.0.0.0 is the class A
> component of the list.
> Thanks in advance.
> Geoff White
> Virtual Sites
Specifically, RFC 1918,
The Internet Assigned Numbers Authority (IANA) has reserved the
following three blocks of the IP address space for private internets:
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
More information about the NANOG