If a few computers are connected to the same internet server then do they have the same IP address?

Answer 1

you're saying, a few computers on a local network(home/office) that connect through shared internet NAT server? if so, the answer is yes, they are gonna have the same internet IP address, but different local network IP.

Answer 2

I'll use a simple although crummy analogy to explain ip setup.

Consider each device on a network as a phone. When the phone company ie the ISP assigns you a number ie IP address. For a phone connection, you can have multiple phones in your house under the same number and seperate them by using an extension system. Similarly you can do so with an IP address and multiple computers in a local area network at home. Thus when a computer sees your network, they only see the unique address. They do not see the individual addresses of each computer. However, if you only have one computer directly connected to the internet, you only have one IP address and not local addresses.

This is where the similarity ends..

Unlike phone numbers, ISPs only have a limited number of IP addresses to play around with. Thus to be efficient, they recycle the addresess using a system known as DHCP. This means that your IP addresses change once in a while as this cycling occurs.

Thus in a network served using DHCP, each computer can have IP addresses matching a range but it will not be static for ever.

Hence if you have a local network, all your computes in the local network will appear under one IP to computers outside your network. And within the network of your ISP ie the consumers they serve, IP addresses are dynamic.

However, The ISP can track you based on their log files or mac address.

A mac address is the unique hardware ID of your network interface. much like the serial number of a phone.

Hope that made some sense.. :-)

Answer 3

No, each device that is attached to a network is assigned a specific address for that network. It is either a fixed address that some tech sets up or assigned by the DHCP server.
It may be possible that 2 devices could have the same address but be on different networks. The internet is NOT one network but an interconnnected group of networks.
I suggest reading some of the links below for more details, it is not as simple as is seems under the covers.

Answer 4

It depends. In the old days each computer had a unique IP address -- but in todays world where IP addresses are in shortage, many hosts use NAT (Network Address Translation) -- which allows many hosts to share a single IP.

Answer 5

NOPE.
on the internet each PC has unique IP address.

Answer 6

no - each mac address (network card) is assigned a different ip on a network using dhcp

Answer 7

No.

Each computer has their own ID number, no matter how many are stuck to the same network.

They can pin you down from outer space.

Answer 8

Sometimes yes. Sometimes not... you'll have to be more specific about your setup.