https://github.com/raspi/ip-range-to-cidr

Convert IP address range to CIDR
https://github.com/raspi/ip-range-to-cidr

cidr cidr-notation cidr-range ip ip-address

Last synced: over 1 year ago
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Convert IP address range to CIDR

• Host: GitHub
• URL: https://github.com/raspi/ip-range-to-cidr
• Owner: raspi
• License: apache-2.0
• Created: 2019-12-26T21:49:13.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2020-01-18T11:58:14.000Z (over 6 years ago)
• Last Synced: 2025-01-08T11:42:08.853Z (over 1 year ago)
• Topics: cidr, cidr-notation, cidr-range, ip, ip-address
• Language: Makefile
• Homepage:
• Size: 12.7 KB
• Stars: 6
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# ip-range-to-CIDR

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Convert IP address range to CIDR.

## Examples

    % ip-range-to-cidr 192.168.0.0 192.168.0.255

    192.168.0.0/24

Figuring out github.com's AS range:

    % systemd-resolve github.com                                                                                          

    github.com: 140.82.118.3                       -- link: phy0

    -- Information acquired via protocol DNS in 45.6ms.

    -- Data is authenticated: no

     % openrdap-client --json --type ip 140.82.118.3 | jq -r '"\(.startAddress) \(.endAddress)"' | xargs ./ip-range-to-cidr

     140.82.112.0/20