> convert | subnet | analyze <
// Convert IP addresses between formats and calculate subnets
CIDR SUBNET INFO:
5 IP Formats
Convert between dotted decimal, integer, hexadecimal, binary, and octal representations instantly.
CIDR Calculator
Enter IP/prefix notation to calculate network address, broadcast, host range, and subnet mask.
Class Detection
Automatically detect IPv4 address class (A, B, C, D, E) based on the first octet.
// ABOUT IP ADDRESS CONVERSION
How IPv4 Addressing Works:
An IPv4 address is a 32-bit unsigned integer, commonly written in dotted decimal notation as four octets separated by dots. Each octet represents 8 bits (0-255). CIDR notation appends a prefix length to define subnet boundaries.
Example:
192.168.1.1 = 3232235777 = 0xC0A80101
Common Use Cases:
- >Network configuration and troubleshooting
- >Subnet planning and IP allocation
- >Firewall rules and ACL configuration
- >Understanding CIDR notation and subnet masks
- >Converting between IP address representations
>> frequently asked questions
Q: What is an IP address?
A: An IP (Internet Protocol) address is a unique numerical identifier assigned to every device connected to a network. IPv4 addresses are 32-bit numbers, typically written as four decimal octets (e.g., 192.168.1.1).
Q: What is the difference between IPv4 and IPv6?
A: IPv4 uses 32-bit addresses (about 4.3 billion unique addresses), while IPv6 uses 128-bit addresses (virtually unlimited). IPv4 is written in dotted decimal notation (192.168.1.1), while IPv6 uses hexadecimal groups separated by colons (2001:db8::1).
Q: What is CIDR notation?
A: CIDR (Classless Inter-Domain Routing) notation represents an IP address followed by a slash and the prefix length (e.g., 192.168.1.0/24). The prefix length indicates how many bits are used for the network portion, determining the subnet size.
Q: What is a subnet mask?
A: A subnet mask is a 32-bit number that divides an IP address into network and host portions. For example, 255.255.255.0 (/24) means the first 24 bits identify the network and the last 8 bits identify hosts within that network.
Q: What are private IP address ranges?
A: Private IP ranges reserved for internal networks are: 10.0.0.0/8 (Class A), 172.16.0.0/12 (Class B), and 192.168.0.0/16 (Class C). These addresses are not routable on the public internet and are used within local networks.