IP ADDRESSING VERSION 4

IPv4

     It is a logical network layer address used for identifying a network, host in a network, a group of host in a network or all the host in a network. IPv4 is 32 bit addressing scheme used as TCP/IP host addressing mechanism. It is divided into four octet. Each octet is represented in decimal format. Each octet is represented in decimal format. Each octet is separated with dots. eg: 192.168.0.254. IP addressing enables every host on the TCP/IP network to be uniquely identifiable. IPv4 provides hierarchical addressing scheme which enables it to divide the network into sub networks, each with well defined number of hosts. Based upon the first octet value, IP addresses are divided into five classes.
  1. Class A : It uses first octet for network addresses and last three octets for host addressing. Range : 0 - 127. Addresses range 1 - 126 are used. Address start with 0 is unknown network and address start with 127 is for Loop track testing (testing the TCP/IP stack). Used for assigning.
  2. Class B : It uses first two octets for network addresses and last two for host addressing. Range : 128 - 191. Used for assigning.
  3. Class C : It uses first three octets for network addresses and last one for host addressing. Range : 192 - 223. Used for assigning.
  4. Class D : It provides flat IP addressing scheme in contrast to hierarchical structure for above three. Range : 224 - 239. It is used for Multicast.
  5. Class E : It is used as experimental. Range : 240 - 255. Used for research purpose.
Class A, Class B and Class C together known as Assignable Class.

MASK


     It is also a 32 bit bandwidth represented like IP address. It is used with every IP address for differentiating the network portion and the host portion of the corresponding IP. The binary 1's in the mask is the network portion and binary 0's represents host portion of the corresponding IP.
Default Mask
Class A - 255.0.0.0
Class B - 255.255.0.0
Class C - 255.255.255.0

Network Address

     It is the IP address used in the network. A network address is an identifier for a node or network interface of a telecommunication network. Network addresses are often designed to be unique across the network, although some networks allow for relative or local addresses that may not be unique. All the host portion of a network address will be 0's. eg: 172.140.0.0 (mask : 255.255.0.0).

Broadcast Address

     It represents all the hosts in a network. A broadcast address is a logical address at which all devices connected to a multiple-access communications network are enabled to receive data. A message sent to a broadcast address is typically received by all network-attached hosts, rather than by a specific host. If all the host portion bits of network address are 1's, then it will be broadcast address. eg : 172.140.255.255 (mask : 255.255.0.0).

Valid IP

    It is the address to represent a particular host. If all the host portion bits are neither 0's nor 1's. Then it will be a host address. eg : 172.140.0.1 (mask : 255.255.0.0).

IP addresses of main websites

  amazon.com - 72.21.211.176
  bbc.co.uk - 212.58.241.131
  bing.com - 65.55.175.254
  blogtv.com - 84.22.170.149
  btjunkie.com - 93.158.65.211
  chatroulette.com - 184.173.141.231
  cracked.com - 98.124.248.77
  demonoid.com - 62.149.24.66
  demonoid.me - 62.149.24.67
  digg.com - 64.191.203.30
  dreamwidth.org - 69.174.244.50
  dropbox.com - 199.47.217.179
  facebook.com - 69.171.224.11
  fileshare.com - 208.87.33.151
  frys.com - 209.31.22.39
  gamespot.com - 216.239.113.172
  gamespy.com - 69.10.25.46
  github.com - 207.97.227.239
  google.com - 74.125.157.99
  gorillavid.com - 178.17.165.74
  hotmail.com - 65.55.72.135
  hush.com - 65.39.178.43
  ign.com - 69.10.25.46
  imgur.com - 173.231.140.219
  justin.tv - 199.9.249.21
  livejournal.com - 209.200.154.225
  mediafire.com - 205.196.120.13
  megaupload.com - 174.140.154.20
  megavideo.com - 174.140.154.32
  mininova.com - 80.94.76.5
  multiupload.com - 95.211.149.7
  newegg.com - 216.52.208.187
  novamov.com - 91.220.176.248
  omegle.com - 97.107.132.144
  own3d.tv - 208.94.146.80
  pastebin.com - 69.65.13.216
  putlocker.com - 89.238.130.247
  reddit.com - 72.247.244.88
  sidereel.com - 144.198.29.112
  stickam.com - 67.201.54.151
  theonion.com - 97.107.137.164
  thepiratebay.org - 194.71.107.15
  tumblr.com - 174.121.194.34
  tvlinks.com - 208.223.219.206
  twitter.com - 199.59.149.230
  uploading.com - 195.191.207.40
  uploaded.to - 95.211.143.200
  videoweed.com - 91.220.176.248
  warez.ag - 178.162.238.136
  warez-bb.org - 31.7.57.13
  what.cd - 67.21.232.223
  wikipedia.org - 208.80.152.201
  yahoo.com - 98.137.149.56
  youtube.com - 74.125.65.91

  PPC - Click Here

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