ip subnet calculator cidr

The Ip2long IP address is converted to an integer type.Long2ip integer data is converted to IP. The subnet mask is converted to a mask length mode:$slash _notation = strlen (Preg_replace ("/0/", "", Decbin (Ip2long ($subnet _mask)));$bits =strpos (Decbin (Ip2long ($mask)), "0"); The

address, and the broadcast address-1 is the last host address.The address range is: network address + 1 to broadcast address-1In this example, the Network range is 192 · 168 · 100 · 1 to 192 · 168 · 100 · 254.That is to say, the following addresses are all in one CIDR block.192 · 168 · 100 · 1, 192 · 168 · 2... 192 · 168 · 100 · 20... 192 · 168 · 100 · 111... 192 · 168 · 100 · 2545) number of hostsNumber of hosts = 2 binary number of hosts-22 is beca

is usually a broadcast address and a network address in the IP address. These two addresses are generally unavailable. You can refer to the details www.2cto.com 5. IP address range algorithm: 1) company IP address information query: (for example, 113.73.0.0 or 113.73.0.0/17) Yangge recommends a better method: http://soc.taobao.com:9999/soc/extend/?extend_feature

· 168 · 100 · 254.That is to say, the following addresses are all in one CIDR block.192 · 168 · 100 · 1, 192 · 168 · 2... 192 · 168 · 100 · 20... 192 · 168 · 100 · 111... 192 · 168 · 100 · 2545) number of hostsNumber of hosts = 2 binary number of hosts-22 is because the host does not include the network address and broadcast address. In this example, the number of binary hosts is 8 bits.Number of hosts = 28-2 = 2542) overall computingThe above exampl

This article describes in detail how to configure network IP addresses. What operations do we need? I believe that reading this article will help you. A few days ago, the netizen harcsbg encountered a strange subnet mask problem during network IP address configuration. harcsbg asked for help in the ccid it community. Dear experts, I have encountered a strange pro

IP Address Subnet mask calculation, return IP segment start and end range, length, mask and other information. /** * Mask Calculator * @author Weaksun * @param string $ip IP * @param

IP address segment: 210.143.144.1 ~ 210.143.159.254, 210.143. (1001) 0000.00000000 indicates the network address and identifies a network, 210.143. (1001) 1111.11111111 is the broadcast address, which can broadcast messages to all addresses in the network. This CIDR block is equivalent to 210.143.144.0/20, that is, 210.143. (1001) 0000.00000000, and 20 indicates the sub