No, 255.255.0.255 is not a valid Class A address. In fact, it is a broadcast address used in Class B networks. Class A addresses range from 1.0.0.0 to 126.255.255.255, and the highest address in this range is 126.255.255.255. Additionally, the address 255.255.255.255 is reserved for the limited broadcast address, not for any specific class.
Public network is where the networked computers are not all trusted. Private network is where all computers are trusted. EG. Public network: cyber cafe. EG Private network: Your work or home network.
Usually a gateway or proxy is responsible for hiding internal networks.
0.0.0.0 --> Current network (only valid as source address) 10.x.x.x --> Private address space for class A networks 14.x.x.x --> Public data network 127.0.0.1 --> Loopback (refers to own computer) 128.0.0.x --> Reserved (IANA) 169.254.0.x --> Zeroconf network 172.16.x.x through 172.31.x.x --> Private address space for class B networks 191.255.0.x --> Reserved (IANA) 192.0.0.x --> Reserved (IANA) 192.88.99.0 --> IPv6 to IPv4 relay 192.168.x.x --> Private address space for class C networks 198.18.0.0 --> Benchmark tests 223.255.255.0 --> Reserved (IANA) 224.0.0.x --> Multicasting 240.0.0.x --> Reserved 255.255.255.255 --> Broadcast I think I've got that right.
First octet rule for each class:Class A: 0xxxxxxxClass B: 10xxxxxxClass C: 110xxxxxClass A range is 0 - 1270.0.0.0 and 127.0.0.0 are not "routable" IP addresses. One defines all networks and the other is the loopback. We have a total of 126 usable networks and 16,777,214 usable hostaddresses per network. There are even less if we don't count the private address of 10.0.0.0 (RFC 1918).Class B range is 128 - 191There are 16,384 total networks in this class; that's including the private addresses of 172.16.0.0 - 172.31.0.0 (RFC 1918). There are a total of 65,534 usable host addresses per network.Class C range is 192 - 223There are 2,097,152 total networks in this class; that's including the private addresses of 192.168.0.0 - 192.168.255.0 (RFC 1918). There are 254 usable hosts addresses per network.
IP addresses are divided into five IP classes:IP address class AIP address class BIP address class CIP address class DIP address class E
In general, 192.168.1.1 is an example of an internet protocol (IP) address under the IP Version 4 (IPv4) addressing structure. An IP address is used to identify a particular computer on a network. More specifically, 192.168.1.1 is a commonly used private network address; it is in the smallest of three groups of IP addresses specifically reserved for use only on private networks, such as local area networks (LANs) and wireless local area networks (WLANs).
IP address is a private Class A address10.0.0.0 for very large networks which can hold as many as 16 million computers. These are addresses that IBM, Geneal Electric and Apple use. The first 3 numbers of the class A IP address is 126. Then they use the 10.0.0.0 to set up private computers within the company. Another example is the IP address 192 thru 223, these are Class C networks which are for small networks. Then within that address there is 192.168.0.0 to 192.168.255.0 to set up private networks within that class.
It is unlikely that you will find the IP address 192.168.250.10 on the internet because the .10 represents the number of host connected to an individual network. Also, IEEE recommends that the following IP addresses be used for private networks: 10.0.0.0 through 10.255.255.255 Class A 172.16.0.0 through 172.31.255.255 Class B 192.168.0.0 through 192.168.255.255 Class C
Private IP Addresse Because of NAT redirection a small company can rely solely on private IP addresse for its internal network and use only the s one public IP assigned to it by is ISP for Internet communication IEEE recommends that the following IP addresse be used for private networks 10.0.0.0 through 10.255.2 172.16.0.0 through 172.31.255.255 192.168.0.0 through 192.168.255.255
The maximum number of host bits that can be borrowed from a class A address is 22 (technically you could borrow 23 but the resulting network would be useless). A class A address uses 8 bits for its network address and 24 bits for its host addresses. Class A uses a subnet mask of 255.0.0.0 You can only borrow 22 bits (instead of 24) because a valid network requires 4 addresses: A network address, two host addresses and a broadcast address. These networks would result in 30 bits used for the network address and 2 bits used for the host addresses. These networks use a subnet mask of 255.255.255.252
An unregistered IP address is an IP address that is not officially assigned or allocated to any organization or entity by a regional Internet registry (RIR). These addresses may be used in private networks or reserved for special purposes, such as loopback or link-local communication. Since they are not registered, they cannot be routed over the public Internet, limiting their accessibility to local or private network environments. Examples include addresses in the ranges specified by RFC 1918 for private networks (e.g., 192.168.x.x).