I have a client who is running Windows 2011 Standard. I use RWW to access the server. They are also using Exchange 2010 to host their email. I have had no problems connecting from anywhere until I recently changed my ISP to the same ISP they are using. We both have static IPs. Now I cannot access the RWW page (says page not found), they cannot email me (I'm using exchange 2007) and I cannot email them... we get a message that says the delivery was delayed. If I open a browser and type their IP address I get page not found... instead of the default IIS7 splash page. If I use another ISP I can hit everything fine. If I ping their URL for the RWW it resolves to an IP. If I tracert to their ip I am able to hit my router and everything after times out... however I can tracert google, microsoft, cnn, etc fine.
Our IPs are two digits away from each other, let's say their IP info is:
Let's say My IP info is:
I am fairly sure the reason I can't see anything is because we are on the same subnet with our ISP...but I would really like to know why that is. I don't know a whole lot about networking outside the local network.