https://github.com/bourgeoisbear/range2cidr

De-aggregates an IP address range into a list of network prefixes (CIDR blocks)
https://github.com/bourgeoisbear/range2cidr

cidr cidr-range deaggreagtion golang golang-library ipcalc ipcalculator ipv4-address ipv6-address netip networking

Last synced: about 2 months ago
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De-aggregates an IP address range into a list of network prefixes (CIDR blocks)

• Host: GitHub
• URL: https://github.com/bourgeoisbear/range2cidr
• Owner: BourgeoisBear
• License: mit
• Created: 2023-02-25T13:57:10.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2024-08-11T07:19:27.000Z (5 months ago)
• Last Synced: 2024-11-01T07:02:35.621Z (2 months ago)
• Topics: cidr, cidr-range, deaggreagtion, golang, golang-library, ipcalc, ipcalculator, ipv4-address, ipv6-address, netip, networking
• Language: Go
• Homepage:
• Size: 58.6 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# range2cidr

[![GoDoc](https://img.shields.io/badge/pkg.go.dev-doc-blue)](https://pkg.go.dev/github.com/BourgeoisBear/range2cidr)

Aggregate() merges a list of IP ranges into a minimal set of covering ranges.

Deaggregate() breaks a single IP range into a list of covering network prefixes.

A number of address helper functions are exposed for convenience.

This library usually operates on addresses as [16]byte values, as returned by netip.Addr.As16().

To convert a netip.Addr into [16]byte:

```go

addr.As16()

```

To unmap an address back into IPv4 format:

```go

if addr.Is4In6() {

	return addr.Unmap()

}

```