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I hope there is a supergenius here about networks. I am using a DSL connection which dynamicly changes the last 6 number of the IP address after turning off the DSL Modem and the computer and reconnecting. However I want to change the first 3 or 6 numbers.

2007-06-22 06:21:21 · 5 answers · asked by Benj 2 in Computers & Internet Computer Networking

5 answers

The only sure, workable way to do it is change ISPs. Those number are assigned to the people who prodvie your Internet service and are essential. I'll explain why.

When you connect to the Internet and make a connection to a web site for example, the server on the other end has to know how to get back to you. It does that by using the IP address which is encoded in each packet of information you send out. It makes it back to you by knowing who owns that address and routes it accordingly. It has to first make it to your provider who then gets it to you. If you IP address is 12.12.1.1, everyone knows that 12.x.x.x belongs to AT&T so sends it along the way to an AT&T router. It's a lot more complicated than that but that's kind of the big picture.

If you change the first few octets, you'll get routed off to someplace else. It's like telling someone to come to your house but giving them an address in another city. They'll never find you. Hackers actually do that when they don't care about packets getting back but just want to flood a network. There are tools that let you do it however, it might not even works. The reason is that most networks only allow packets out of their network with their addresses on them to stop exactly what I mention above.

So, the only real workable way is to change ISPs.

2007-06-22 06:37:06 · answer #1 · answered by Big Ed 4 · 0 2

You clearly do not understand what is going on.

Your ISP is providing you a public IP address when you fire up your DSL modem. The ISP owns the IP address, you do not. I suspect the ISP has further subdivided their network. The first 6 digits of the IP are probably not able to be changed by the ISP for numerous reasons. From what you say, it looks like the dynamic range for the ISP's IP addresses are something they can change and do every time you reboot the DSL modem. (Actually when you power down your DSL modem, the IP address is returned to the ISP and he reuses it elsewhere, this is what is called a dynamic IP).

If you want your IP to remain the same always, contact your ISP and requiest a static IP. They will issue you a static IP, with a subnet mask, default gateway, and DNS servers which you must then enter in your router. You will pay a set up fee for the static IP and you will pay a higher fee per month for the static IP.

2007-06-22 06:29:24 · answer #2 · answered by GTB 7 · 0 1

IP address ranges are given to your ISP and cannot be changed by home users users. With cable DSL, usually your specific address is dictacted by what area u live in.

The only chance u have is to contact your ISP and beg the techie to switch around the IPs. This is actually not a hard thing, but they may not be willing to do this.

good luck

2007-06-22 06:29:19 · answer #3 · answered by SuperGlen 3 · 0 1

It relies upon on your community setup. in the journey that your ISP is setup with static IP addresses, then you definately won't be able to alter your gateway address. you're able to alter the address of a individual gadget on your community, however the final addres of your community could nonetheless be the comparable.

2016-09-28 07:30:08 · answer #4 · answered by osazuwa 4 · 0 0

You can't. Internet public addresses are officially registered numbers. They are fixed by your isp, if you manually change them you will lose your connection, and will also be breaking the law. Many isps shut people down for this.

2007-06-22 07:04:28 · answer #5 · answered by Anonymous · 0 1

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