Ip Address

• Class A addresses have first octets with a decimal number from 1 to 127. Example:
  27.x.y.z
  102.x.y.z
• Class B addresses have first octets with a decimal number from 128 to 191.Example:
  128.x.y.z
  151.x.y.z
• The Class C addresses have first octets with a decimal number from 192 to 223.Example:
  192.x.y.z
  223.x.y.z
• Class D addresses have decimal values from 224 to 239 in the first octet, and the 4 leftmost bits are 1110.Example:
  224.x.y.z
  239.x.y.z
• The last class of addresses is Class E. Class E addresses range from 240 to 255 in the first octet, and the 4 leftmost bits are 1111.Example:
  240.x.y.z
  255.x.y.z
The system of class addresses has been set up to help ensure assignment of unique IP addresses. DHCP discover, DHCP offer, DHCP request, and DHCP acknowledgment are are four steps in getting an IP address  from a DHCP server.



Computer Ip Address Configuration

To find out local what is Your (My) IP address  and possible TCP/IP networking problem follow next steps:

• If you use win9x/ME go to start-run and type winipcfg, and then press ENTER
• For win2k/xp or wista go to start-run (Windows Wista user go to Windows button), type cmd and then ENTER. At the DOS prompt type ipconfig and you'll see DNS suffix, IP address, subnet mask, and default gateway. For more info type ipconfig /all
• For Macintosh select the TCP/IP control panel from the Apple menu's "Control Panels" sub-menu. The TCP/IP control panel window will open and display your ip address.