what is ip address

Discussion in 'QnA (read only)' started by dikudik, Sep 24, 2004.

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  1. dikudik

    dikudik New Member

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    hi,
    can anybody tell me what is ip address and is it possible to trace user from ip address i need to know detail kindly help
     
  2. club_pranay

    club_pranay Nokia 7110 to iPhone 5

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    This definition is based on Internet Protocol Version 4. See Internet Protocol Version 6 (IPv6) for a description of the newer 128-bit IP address. Note that the system of IP address classes described here, while forming the basis for IP address assignment, is generally bypassed today by use of Classless Inter-Domain Routing (CIDR) addressing.
    In the most widely installed level of the Internet Protocol (IP) today, an IP address is a 32-bit number that identifies each sender or receiver of information that is sent in packets across the Internet. When you request an HTML page or send e-mail, the Internet Protocol part of TCP/IP includes your IP address in the message (actually, in each of the packets if more than one is required) and sends it to the IP address that is obtained by looking up the domain name in the Uniform Resource Locator you requested or in the e-mail address you're sending a note to. At the other end, the recipient can see the IP address of the Web page requestor or the e-mail sender and can respond by sending another message using the IP address it received.

    An IP address has two parts:
    the identifier of a particular network on the Internet and an identifier of the particular device (which can be a server or a workstation) within that network. On the Internet itself - that is, between the router that move packets from one point to another along the route - only the network part of the address is looked at.

    The Network Part of the IP Address
    The Internet is really the interconnection of many individual networks (it's sometimes referred to as an internetwork). So the Internet Protocol (IP) is basically the set of rules for one network communicating with any other (or occasionally, for broadcast messages, all other networks). Each network must know its own address on the Internet and that of any other networks with which it communicates. To be part of the Internet, an organization needs an Internet network number, which it can request from the Network Information Center (NIC). This unique network number is included in any packet sent out of the network onto the Internet.
    The Local or Host Part of the IP Address
    In addition to the network address or number, information is needed about which specific machine or host in a network is sending or receiving a message. So the IP address needs both the unique network number and a host number (which is unique within the network). (The host number is sometimes called a local or machine address.)
    Part of the local address can identify a subnetwork or subnet address, which makes it easier for a network that is divided into several physical subnetworks (for examples, several different local area networks or ) to handle many devices.

    IP Address Classes and Their Formats
    Since networks vary in size, there are four different address formats or classes to consider when applying to NIC for a network number:
    Class A addresses are for large networks with many devices.
    Class B addresses are for medium-sized networks.
    Class C addresses are for small networks (fewer than 256 devices).
    Class D addresses are multicast addresses.
    The first few bits of each IP address indicate which of the address class formats it is using. The address structures look like this:

    Class A 0 Network (7 bits) Local address (24 bits)


    Class B 10 Network (14 bits) Local address (16 bits)


    Class C 110 Network (21 bits) Local address (8 bits)


    Class D 1110 Multicast address (28 bits)


    The IP address is usually expressed as four decimal numbers, each representing eight bits, separated by periods. This is sometimes known as the dot address and, more technically, as dotted quad notation. For Class A IP addresses, the numbers would represent "network.local.local.local"; for a Class C IP address, they would represent "network.network.network.local". The number version of the IP address can (and usually is) represented by a name or series of names called the domain name.

    The Internet's explosive growth makes it likely that, without some new architecture, the number of possible network addresses using the scheme above would soon be used up (at least, for Class C network addresses). However, a new IP version, IPv6, expands the size of the IP address to 128 bits, which will accommodate a large growth in the number of network addresses. For hosts still using IPv4, the use of subnets in the host or local part of the IP address will help reduce new applications for network numbers. In addition, most sites on today's mostly IPv4 Internet have gotten around the Class C network address limitation by using the Classless Inter-Domain Routing (CIDR) scheme for address notation.

    Relationship of the IP Address to the Physical Address
    The machine or physical address used within an organization's local area networks may be different than the Internet's IP address. The most typical example is the 48-bit Ethernet address. TCP/IP includes a facility called the Address Resolution Protocol (ARP) that lets the administrator create a table that maps IP addresses to physical addresses. The table is known as the ARP cache.
    Static versus Dynamic IP Addresses
    The discussion above assumes that IP addresses are assigned on a static basis. In fact, many IP addresses are assigned dynamically from a pool. Many corporate networks and online services economize on the number of IP addresses they use by sharing a pool of IP addresses among a large number of users. If you're an America Online user, for example, your IP address will vary from one logon session to the next because AOL is assigning it to you from a pool that is much smaller than AOL's base of subscribers.
     
  3. krazydude

    krazydude New Member

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    Follow me and I shall set u free
    club_pranay, lotta text dude
     
  4. tuxfan

    tuxfan New Member

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    Good work club_pranay. Is anything left for the rest of us to say? ;)
     
  5. lajs

    lajs New Member

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    ip is jus ur identity in this world ....jus like ur name identifiable others...a globally recognised one ...club pranay had given more technical related to it!!!
     
  6. demoninside

    demoninside New Member

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    ya nice info dude
    so u got a what u want dikudik
     
  7. ishaan

    ishaan New Member

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    if u wanna check ur own ip:

    win98 --> START>RUN>WINIPCFG
    winxp --> START>RUN>CMD this will open the comman prompt. then type in IPCONFIG

    then see the no. next to ur dial up adapter if u got dialup net or network adapter if u got net thru ur cable operator.

    u can also use ip addresses 2 find d location of d ip address. search for this on digit forums cuz i remember dere is a post on this with many links which tell u locations of da pc if u giv d ip.
     
  8. #/bin/sh

    #/bin/sh New Member

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  9. club_pranay

    club_pranay Nokia 7110 to iPhone 5

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  10. techie_it

    techie_it New Member

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    Rite Here !!!!
  11. drgrudge

    drgrudge Another Brick in the Wall

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    @club_pranay dude, he has not let us answer, his reply was enough!
     
  12. drgrudge

    drgrudge Another Brick in the Wall

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    @club_pranay dude, u have not let us answer, ur reply was enough!
     
  13. cooljeba

    cooljeba The Photoshop Guy

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    lol u r right.

    ..:: peace ::..
    Jeba
     
  14. Kl@w-24

    Kl@w-24 Slideshow Bob

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    Well, an IP address is... OOPS!!! I'm too late :lol:
     
  15. technopile_dude

    technopile_dude New Member

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    hey as u know much detail of IP i just wanna tell how u can find ur own IP address

    just go to start>run and type "command"

    it will take to a dos window

    there type "IPconfig"

    and u will find ur IP address..........tell me if it helps as i am afraid it only works in XP
     
  16. Kl@w-24

    Kl@w-24 Slideshow Bob

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    Yep, 'ipconfig' works on NT platform only. For Win 9x/Me, use 'winipcfg'.
     
  17. tuxfan

    tuxfan New Member

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    Works in Win98 as well
     
  18. fire

    fire New Member

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    Guess........
    Good work pranay. Keep it UP......
     
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