Hi lessmess,

Thanks for your question!

To answer your question about modems it can vary because some of them are router/modem combination units. That said, modems in general, don't have IP addresses when they're just modems. Modems, unmanaged switches, and hubs don't have IP addresses because they don't need them.

You should be able to take a look at the hop #2 IP address and see if it's within the private ranges (192.168.0.0 - 192.168.255.255, 172.16.0.0 - 172.31.255.255, 10.0.0.0 - 10.255.255.255) and know if it might be in your network or not. If it's not in these ranges then you can do a WHOIS lookup to see who it is registered to. It sounds like maybe you already did a lookup and found that it's not yours.

You can also use the Local Network Discovery tool built into PingPlotter (Tools -> Local Network Discovery) to see everything that's on your network. This can let you know if the private IP that you are seeing is in your network or your ISP's network.

To answer your second question, you don't see your IP address (ie your NIC IP address) because PingPlotter only shows hops in the route. So effectively, you are hop #0 if you want to think of it that way and hop #1 should be to your router.

Let us know if there are any other questions that come up, we're happy to help!

Thanks,

-Poe