How can I change the IP address on a AT&T Cable Router for the internet

By yyiiyyii
Apr 23, 2008
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  1. How can I change the IP address on a AT&T Cable Router for the internet
  2. kimsland

    kimsland Ex-TechSpotter Posts: 18,353

    Log into your Router (should be http:// some numbers (refer to your manual to confirm the default log in Router IP)

    Once logged into your Router, there should be an option that says "Lan IP Setup" (or similar) under Advanced settings (usuallly)
    You can change your Router IP there (but it must be in a similar range, ie instead of 192.168.0.1 you could make it 192.168.0.2 (as an example)
  3. yyiiyyii

    yyiiyyii Newcomer, in training Topic Starter Posts: 108

    I want to change the external ip address of the router for the internet
  4. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    not possible. The ISP assigns the address, either statically or dhcp.

    if you want to wait for the ISP Cache to wrap, power off the modem and then
    wait xx days (which is again determined by the ISP).

    you best learn to live with what works or purchase a domain name and have your
    ISP support the name/ip address pair.
  5. LookinAround

    LookinAround TechSpot Chancellor Posts: 8,358   +167

    You can also get a free domain name (actually, up to 3 free domain names) by registering with DynDNS. Of course, free DNS doesn't give you all the options, bells, and whistles you get with a paid account but if you basically just want a static domain name (so you don't need to know your currently assigned IP) the free account works great.
  6. Armor3dOrange

    Armor3dOrange Newcomer, in training

    jobeard is right. depending on your service provider, you'll either have 1 consistent ip address for the remainder of your internet service, or you'll will be assigned a new ip every now and then by your ISP.
  7. kimsland

    kimsland Ex-TechSpotter Posts: 18,353

    Unless on dial-up :)
  8. LookinAround

    LookinAround TechSpot Chancellor Posts: 8,358   +167

    Or, varies by provider, DSL.

    Friends with AT&T Yahoo DSL got a new IP with every reboot. That's when i got them a free domain name at DynDNS.
  9. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    He's not after a name per se, but want's a NEW ip address, likely for nefarious reasons. His hardware MAC is forcing a consistent IP address assignment from the ISP and thus he can be tracked.
  10. LookinAround

    LookinAround TechSpot Chancellor Posts: 8,358   +167

    Ummm, actually i was just noting the free domain names are available (in response to your mention of "purchasing" one ;)
  11. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    yes, but the service just maps a constant name to the current DHCP assigned ip address. The name is not the issue, but rather any other ip address assignment.
     
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