CIDR (Classless inter-domain routing)
This Package converts IP CIDR to range and return First IP, Last IP, First IP decimal, Last IP decimal and Total Host count for IPv4 and IPv6
Install
go get -u github.com/m7shapan/cidr
How to use
See the GoDoc
package main
import (
"fmt"
"log"
"github.com/m7shapan/cidr"
)
func main() {
p, err := cidr.ParseCIDR("1.0.0.0/24")
if err != nil {
log.Fatal(err)
}
fmt.Println("First IP:", p.FirstIP)
if p.IsIPv4 {
fmt.Println("First IP (Decimal):", p.FirstIPv4())
} else {
fmt.Println("First IP (Decimal):", p.FirstIPv6())
}
fmt.Println("Last IP:", p.LastIP)
if p.IsIPv4 {
fmt.Println("Last IP (Decimal):", p.LastIPv4())
} else {
fmt.Println("Last IP (Decimal):", p.LastIPv6())
}
if p.IsIPv4 {
fmt.Println("Total Host:", p.HostCountIPv4())
} else {
fmt.Println("Total Host:", p.HostCountIPv6())
}
// First IP: 1.0.0.0
// First IP (Decimal): 16777216
// Last IP: 1.0.0.255
// Last IP (Decimal): 16777471
// Total Host: 256
ip := net.ParseIP("1.0.0.0")
fmt.Println(IPv4tod(ip)) // 16777216
ip := net.ParseIP("2001:4860:4860::8888")
fmt.Println(IPv6tod(ip)) // 42541956123769884636017138956568135816
var i uint32 = 16777216
fmt.Println(DtoIPv4(i)) // 1.0.0.0
b := new(big.Int)
b.SetString("42541956123769884636017138956568135816", 10)
fmt.Println(DtoIPv6(b)) // 2001:4860:4860::8888
}Package usage for SEO
- get ip from ip range
- convert ip range to ip
- golang convert ip range to decimal
- How to get first/last IP address of CIDR
- Convert IP version 6 address to integer or decimal number
- IPv4 to IP Decimal Conversion
- ipv4 to decimal golang