Why doesnt my ip ever change?

March 10, 2009 at 20:12:14
Specs: Windows XP
I have a cable internet connection whihc is supposed to be dynamic. However i have been checking http://www.gozillo.com/utilities.ph... and my ip has not changed for months at least. How long will a cable ip stay the same before changing?

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March 10, 2009 at 20:44:58
Kind of depends of a few things. Might be that way for years or until the next lease time happens.

I'd be willing to bet that the first time you needed a static IP for some reason and you tried your's it will have changed.

"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10

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March 10, 2009 at 20:50:31
I had a unnamed-large cable ISP for a while as well, and the IP would only change every couple of months.

I think I saw it go as far as a year (or close) once. It was nice for hosting a domain on, but it will change every few months.

If you want another, you could try to get a new MAC address on your border device - i.e., a differnet router, or change the MAC, flush your leases & reboot the modem.

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March 11, 2009 at 02:33:48
i think it's called a sticky ip, means that it will change but not for a certain time period, could be days, week, months etc..

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March 11, 2009 at 05:41:39
If you really want to get new IP address, all you have to do is turn off & restart the modem. If I were you I would take advantage of the sticky IP address to host websites on the cheap :-)


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March 11, 2009 at 06:10:09
I've never heard of it referred to as a "sticky IP" but it could easily be. I don't work for an ISP.

What it is is the IP is wired to your MAC address. If you have a SOHO router, go into it, change your MAC address (spoof it) and your IP should change. Change it back to the original MAC and you're likely to get the original IP back. At least, it works that way with my ISP.

I can reboot my modem and the IP doesn't change.....because the modem still has the same MAC. Mind you, my ISP gave me a combo modem/router/wireless AP when I upgraded to a higher bandwidth package a year or so back. But since then, I've had a couple power outages (one that lasted about 2 hours) and my IP has remained the same.

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March 11, 2009 at 07:24:20
"sticky" IP addresses are not that uncommon here in the UK where MAC addresses don't come into it as we use PPPoATM.

A previous ISP I was with even gave users the option of a "sticky" IP address or one that changes every time you log in with the proviso that a "sticky" IP address might change or it might not. So it is something the ISP can control. You are more likely to get a "sticky" IP address from a smaller ISP as they wont have such a large pool of IP addresses to issue as a large ISP like British Telecom might.


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March 11, 2009 at 23:21:44
Thanks for all the feedback. More a curiosity than anything. Guess I could take advantage of it and host something but as someone said, that probably when it will decide to change :)

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March 12, 2009 at 07:22:54
"sticky" IP addresses are not that uncommon here in the UK where MAC addresses don't come into it as we use PPPoATM.

That explains why I'm not famliiar with that term. I'm in Canada and our providers tend to not use PPoE or PPPoATM. Pretty much you just get your modem, hook it up, connect your SOHO router or PC to it (with the interface set to DHCP) and you're up and surfing. No authentication required.

My best friend lives in the next province over and his ADSL is setup to give him a new IP address every few minutes. This can be frustrating when we're gaming together. Generally speaking, if it's a direct connection type game, he connects to me all the time as my IP hasn't changed in years (not since I upgraded to a higher bandwidth package and got a new modem/router/AP combo unit).

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