[LARTC] 150.150. addresses

[LARTC] 150.150. addresses

[adelphia]

Are 150.150.*.* adresses private or reserve addresses?
My friend has a one, and I tried doing an nslookup, ping, and traceroute
with no luck.

Thanks


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Re: [LARTC] 150.150. addresses

[Tomasz Orzechowski]

adelphia wrote on Wed, Jun 20, 2001 at 10:24:18PM -0400:
> Are 150.150.*.* adresses private or reserve addresses?
> My friend has a one, and I tried doing an nslookup, ping, and traceroute
> with no luck.

$ whois -h whois.arin.net 150.150.1.1 
LG-EDS Systems Inc. (NET-LGEDS-NET)
   555 Hogae-Dong,Dongan-Gu
   AnYang-Si KyungKi-Do 430-080
   KR

   Netname: LGEDS-NET
   Netblock: 150.150.0.0 - 150.150.255.255

gw5#sh ip bgp 150.150.1.1
BGP routing table entry for 150.150.0.0/16, version 1869114
Paths: (2 available, best #2, table Default-IP-Routing-Table)
  Not advertised to any peer
  701 2828 3786 6068
    157.130.96.149 from 157.130.96.149 (137.39.2.106)
      Origin IGP, localpref 100, valid, external
  2548 3786 6068
    209.49.240.185 (metric 20) from 209.221.31.9 (209.221.31.9)
      Origin IGP, metric 720501, localpref 100, valid, internal, best

why ask here? :-)
-- 
Tomasz Orzechowski                                           tmo@apk.net
APK.net systems administration team                                TO630


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Re: [LARTC] 150.150. addresses

[Fredrik Björk]

At 22:24 2001-06-20 -0400, you wrote:
>Are 150.150.*.* adresses private or reserve addresses?
>My friend has a one, and I tried doing an nslookup, ping, and traceroute
>with no luck.


Private address space is defined in RFC1918 (see 
http://www.faqs.org/rfcs/rfc1918.html):

3. Private Address Space

    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)

That is, all addresses beginning with 10., all beginning with 172.16. 
through 172.31. and all beginning with 192.168. are private. You should 
NEVER use other addresses in your private LAN since that can cause trouble 
for you (and normally only you). A customer of mine had set up a private 
LAN with addresses belonging to Pittsburgh board of electricity which would 
cause their LAN to believe that requests to Pittsburgh were local so they 
couldn't be routed out of their office. Not that a swedish company would 
ever be interested in Pittsburgh board of electricity, but you never know 
what problems could occur. (Say for instance that Pittsburgh board of 
electricity hosts the DNS servers for a company that you really want to 
contact...)

On the other hand you should be aware that these addresses won't be routed 
on the Internet and can therefore be used alongside with your public IP 
addresses for switches or other kinds of equipment that you don't need to 
be globally, but only locally available.

/Fredrik


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