Clear old IP addresses

I previously had TWC for Home Internet, I now have Fios. I'm using the factory Verizon router. My wireless speeds are as advertised, roughly 25/25, but my hard-wired desktop is getting 1.5/1.5.

The IP address on my PC shows the old TWC IP, not the Verizon IP. Logged in to the router settings and didn't see any issues in there.

After doing some research online, I have reset and rebooted the router to no avail. I have run the command prompt of "ipconfig/release" and then "ipconfig/renew", but neither of those work consistently. I have gotten it to work, but the next time I get on, it is back to TWC.

Is there some type of cache of IP addresses that I can purge? Please help

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Just last month this confused a member.

They were confusing their LAN addresses with TWC or other addresses.

It's proper for your LAN address of 192.168.x.x or 10.x.x.x to not change when you change services.

That's your LAN address and not owned by TWC, Comcast and such.

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Still looking for a solution

Do you know what would cause my speeds to change on my desktop then or how to have it forget that IP address? The weird thing is that it is sporadic. It will at times "reconfigure" showing the Fios IP address when I run a speedtest, whereas other times, when it's slow, it will be showing the TWC IP address

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Fixed as of now...
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While good to know.

This cache eventually clears on its own. I shared a repeating find by some of my clients but since I don't know your network I can't troubleshoot it today.

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Can you clarify what you mean by repeating find?

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As in

The client notes their PC's IP address didn't change when they changed ISPs.

If we have a router the LAN address might not change.

I wonder if IP networking is getting to to be too much for everyone today. It's pretty technical and even asking a question may be too much to ask. For example I've asked other members for details like PC IP, DNS and Netmask to check out basics but instead of an answer I get a reply "How?"

That's basic IP networking so I'm getting the feeling it's time for a more consumer friendly system.

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