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  1. #1
    Regular Coder
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    This may be off topic for this discussion: tcp/ip question

    Hello;

    I have been from top to bottom with web related dev/programming/server setup and admin:

    In the late 2000's I had static ip addresses for the sake of serving 4 domains
    from home on home built amd 64 servers running FreeBSD, including nameserver configuration
    and postfix mail server set up for the 4 domains.
    So, I have a fair idea of networking issues.
    The tcp/ip rules are that network addresses in the ranges of
    192.168.0.0, 172.0.0.0 and 010.0.0.0 are designated as for private local net
    use and are not served from remote locations ( accept for VPN networks).
    My question is
    What about address ranges from 192.0.0.0 to 192.167.255.255 and
    192.169.0.0 to 192.255.255.255?
    (my working knowledge is limited to ip4 addressing)

  • #2
    God Emperor Fou-Lu's Avatar
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    These are all ipv4 addresses, but to answer your question, the private network ranges are defined as follows:
    10.0.0.0/8 (what a waste of a class A)
    167.254.0.0/16 (APIPA)
    172.16.0.0/12
    192.168.0.0/16

    So doing some bit calculation magic, that would give you these ranges:
    10.0.0.0 - 10.255.255.255
    167.254.0.0 - 167.254.255.255
    172.16.0.0 - 172.31.255.255
    192.168.0.0 - 192.168.255.255

    Anything outside of these ranges are routeable (except you shouldn't work with class D and E address ranges).
    PHP Code:
    header('HTTP/1.1 420 Enhance Your Calm'); 


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