Mailing List Message #15016
From: <>
Subject: Re: AOL and SIMS
Date: Mon, 09 May 2005 12:05:00 -0400
To: "SIMS Discussions" <>
X-Mailer: Atlas Mailer 2.0
In a message dated 5/9/2005 10:55:55 AM Eastern Daylight Time, Stefan Jeglinski <> writes:

>>  >>AOL doesn't accept mail from any IP block that belongs to cable providers.
>>>Seeing as AOL Hi-speed necessarily uses cable providers in certain
>>>areas to provide the connection to their own customers, I don't see
>>>how this could be true in general. They'd be not accepting mail from
>>>their own customers.
>>  Well I don't know what happens on Windows, but on Macintosh, AOL
>>assigns your computer an IP number from the AOL pool of IP numbers
>>when you sign on, so your mail isn't actually isn't seen as coming
>>from the cable provider's IP number, but from an AOL IP number.
>Really? If you have a cable connection, you already have an IP
>address, before you sign on to AOL, no? Given today's "limited"
>number of IP addresses, and the size of AOL and, for example, Time
>Warner, I'm surprised that they would allow one to take 2 IP
>addresses out of the block space (1 AOL, 1 TW), when one is all that
>is needed.

Yes really. I have DSL service through with a static IP number (well several of them actually). They are sent to "virtual computers" by my router, so my G4 doesn't actually have a public IP number, but the Router has that number and forwards it to the local IP number for my machine.

Here is the routing tables from my Network Utility.

Routing tables

Destination        Gateway            Flags    Refs      Use  Netif Expire
default      UGSc       49      104    en0
64.12.96/19 UGSc        0        0   ppp0
127                localhost          UCS         0        0    lo0
localhost          localhost          UH         37    17146    lo0 UGSc        1        0   ppp0
152.163.192/19 UGSc        0        0   ppp0
152.163.240/20 UGSc        0        0   ppp0
169.254            link#4             UCS         0        0    en0
192.168.123        link#4             UCS         2        0    en0    localhost          UHS         0       11    lo0    0:0:94:d3:ad:d1    UHLW       35        0    en0    970    link#4             UHLWb       1      496    en0
198.81.16/21 UGSc        0        0   ppp0
202.67.64/23 UGSc        0        0   ppp0
205.188.13 UGSc        0        0   ppp0
205.188.32/19 UGSc        2        0   ppp0 UGSc        1        0   ppp0
205.188.192/20 UGSc        0        0   ppp0

Now I'm not an expert on telling you what it means, but there are a number of AOL IP numbers present there. And if I use the AOL browser to go to it tells me my IP number is

Under Mac OS 9 it used to be much easier to see - the Network part of Apple System Profiler showed the two IP numbers.

The biggest problem this causes me is that often when I am signed on to AOL (but not always), AOL users can't access the web sites that are running from the same G4 here as I guess AOL gets tripped up on figuring out what IP number they're at, and because I'm logged on knows that my actual IP number is now for their purposes at least an AOL IP number. I don't understand all of this though - I know that sometimes when I'm online AOL users can access my sites and at other times they can't.

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