What is Ip address?

An Internet Protocol address (IP address) is a numerical label (32 bit number)assigned to each device connected to a computer network that uses the Internet Protocol for communication.Most networks combine IP with a higher-level protocol called Transmission Control Protocol (TCP), which establishes a virtual connection between a destination and a source.

IP address is written in “dotted decimal” notation, which is 4 sets of numbers separated by period each set representing 8-bit number ranging from (0-255). An example of IPv4 address is 216.3.128.12, which is the IP address previously assigned to iplocation.net.

Versions of Internet Protocols

Internet Protocol Version4:

Internet protocol version 4(IPV4) is a connectionless protocol for use on packet-switched networks. It operates on a best effort delivery model, in that it does not guarantee delivery, nor does it assure proper sequencing or avoidance of duplicate delivery. These aspects, including data integrity, are addressed by an upper layer transport protocol, such as the Transmission Control Protocol(TCP).

Internet Protocol Version6:

Internet Protocol version 6 (IPv6) is a Connection oriented protocol and it is the latest revision of the Internet Protocol (IP) and the first version of the protocol to be widely deployed. IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion.

Types Of Address

Class A 1.0.0.1 to 127.255.255.254 Supports 16,777,216 hosts on each of 256 networks. Class B 128.1.0.1 to 191.255.255.254 Supports 65,536 hosts on each of 65,536 networks. Class C 192.0.1.1 to 223.255.254.254 Supports 256 hosts on each of 16,777,216 networks. Class D 224.0.0.0 to 239.255.255.255 Reserved for multicast groups. Class E 240.0.0.0 to 254.255.255.254 Reserved for future use, or Research and Development Purposes.

Class A Address

The first bit of the first octet is always set to 0 (zero). Thus the first octet ranges from 1 – 127, i.e.

Maplebytes

Class A addresses only include IP starting from 1.x.x.x to 126.x.x.x only. The IP range 127.x.x.x is reserved for loopback IP addresses.

The default subnet mask for Class A IP address is 255.0.0.0 which implies that Class A addressing can have 126 networks (27-2) and 16777214 hosts (224-2).

Class A IP address format is thus: 0NNNNNNN.HHHHHHHH.HHHHHHHH.HHHHHHHH

Class B Address

An IP address which belongs to class B has the first two bits in the first octet set to 10, i.e.

Maplebytes

Class B IP Addresses range from 128.0.x.x to 191.255.x.x. The default subnet mask for Class B is 255.255.x.x.

Class B has 16384 (214) Network addresses and 65534 (216-2) Host addresses.

Class B IP address format is: 10NNNNNN.NNNNNNNN.HHHHHHHH.HHHHHHHH

Class C Address

The first octet of Class C IP address has its first 3 bits set to 110, that is:

Maplebytes

Class C IP addresses range from 192.0.0.x to 223.255.255.x. The default subnet mask for Class C is 255.255.255.x.

Class C gives 2097152 (221) Network addresses and 254 (28-2) Host addresses.

Class C IP address format is: 110NNNNN.NNNNNNNN.NNNNNNNN.HHHHHHHH

Class D Address

Very first four bits of the first octet in Class D IP addresses are set to 1110, giving a range of:

Maplebytes

Class D has IP address rage from 224.0.0.0 to 239.255.255.255. Class D is reserved for Multicasting. In multicasting data is not destined for a particular host, that is why there is no need to extract host address from the IP address, and Class D does not have any subnet mask.

Class E Address

This IP Class is reserved for experimental purposes only for R&D or Study. IP addresses in this class ranges from 240.0.0.0 to 255.255.255.254. Like Class D, this class too is not equipped with any subnet mask.

Networking Courses

what is private IP Address???

Home routers have their local address set to a default, private IP address number. It’s usually the same address for the other models from that manufacturer, and it can be seen in the manufacturer’s documentation.

Here’s a look at the default private (also called “local”) IP addresses for popular brands of routers:

Linksys routers use 192.168.1.1

routers use 192.168.1.1 D-Link and NETGEAR routers are set to 192.168.0.1

and routers are set to 192.168.0.1 Cisco routers use either 192.168.10.2, 192.168.1.254 or 192.168.1.1

routers use either 192.168.10.2, 192.168.1.254 or 192.168.1.1 Belkin and SMC routers often use 192.168.2.1

Reserved for private networks.

The organizations that distribute IP addresses to the world reserves a range of IP addresses for private networks.

192.168.0.0 – 192.168.255.255 (65,536 IP addresses)

(65,536 IP addresses) 172.16.0.0 – 172.31.255.255 (1,048,576 IP addresses)

(1,048,576 IP addresses) 10.0.0.0 – 10.255.255.255 (16,777,216 IP addresses)

what is public IP address???

A public IP address is an IP address that your home or business router receives from your ISP. Public IP addresses are required for any publicly accessible network hardware, like for your home router as well as for the servers that host websites.

Public IP addresses are what differentiate all devices that are plugged into the public internet. Each and every device that’s accessing the internet is using a unique IP address.

Range of Public IP Addresses

Certain IP addresses are reserved for public use and others for private use. This is what makes private IP addresses unable to reach the public internet – because they aren’t even able to communicate properly unless they exist behind a router.

The following ranges are reserved by the Internet Assigned Numbers Authority(IANA) for use as private IP addresses:

10.0.0.0 to 10.255.255.255

to 172.16.0.0 to 172.31.255.255

to 192.168.0.0 to 192.168.255.255

How to Find Your Public IP Address???

If you want to know your public ip address click below link

http://www.whatismyipaddress.com

http://www.iplocation.net/find-ip-address