DN42 PeerFinder

Find open dn42 prefixes!

Size Comment
/29 starter pack
/28 usually enough
/27 default allocation
/26 usually enough
/25 still a lot of IPs!
/24 are you an organization?

The current guideline is to allocate a /27 or smaller by default, keeping space for up to a /26 if possible. Don't allocate more than a /25 worth of addresses and please think before you allocate: If you are going to have 2-3 servers and two VPN-spaces, a /28 is enough to suit your needs. Same will go for most home-networks. This is not public internet, but our IPv4-space is valuable too! If you need a /24 or larger, please ask in the IRC chan or on the mailing list.

For example, if there is no /27 free, you can split up a /26 into two /27. If you are looking for a /27 but there are none showing in the Open Netblocks tool, instead pick one of the /26 and click Take it! When registering your inetnum, instead of writing 172.2x.xxx.0-172.2x.xxx.63 then you can write 172.2x.xxx.0-172.2x.xxx.31. This will get you a /27 and save our IP space for others.

To register for example 172.20.150.0/27, you need to fill in 172.20.150.0-172.20.150.31.

JSON Output

{
    "prefixes": {
        "29": [
            "172.20.15.224_29",
            "172.20.184.240_29",
            "172.20.2.240_29",
            "172.20.227.128_29",
            "172.20.227.136_29",
            "172.20.34.192_29",
            "172.20.42.136_29",
            "172.20.42.160_29",
            "172.20.46.128_29",
            "172.21.113.128_29",
            "172.21.117.32_29",
            "172.21.74.96_29",
            "172.22.105.16_29",
            "172.22.186.0_29",
            "172.23.248.0_29"
        ],
        "28": [
            "172.20.2.224_28",
            "172.20.227.112_28",
            "172.20.227.96_28",
            "172.20.232.32_28",
            "172.20.42.144_28",
            "172.22.151.32_28",
            "172.22.159.16_28",
            "172.22.161.80_28",
            "172.22.161.96_28",
            "172.22.189.64_28",
            "172.23.109.0_28",
            "172.23.109.16_28",
            "172.23.162.96_28",
            "172.23.223.192_28",
            "172.23.240.32_28"
        ],
        "27": [
            "172.20.149.64_27",
            "172.20.155.32_27",
            "172.20.155.64_27",
            "172.20.167.160_27",
            "172.20.20.32_27",
            "172.20.227.192_27",
            "172.21.101.96_27",
            "172.21.74.32_27",
            "172.21.74.64_27",
            "172.21.87.64_27",
            "172.22.146.128_27",
            "172.23.162.32_27",
            "172.23.162.64_27",
            "172.23.234.224_27",
            "172.23.250.32_27"
        ],
        "26": [
            "172.20.129.128_26",
            "172.20.34.128_26",
            "172.20.46.64_26",
            "172.21.113.64_26",
            "172.21.121.128_26",
            "172.21.121.64_26",
            "172.22.116.64_26",
            "172.22.128.64_26",
            "172.22.131.64_26",
            "172.22.132.64_26",
            "172.23.128.64_26",
            "172.23.168.192_26",
            "172.23.197.192_26",
            "172.23.203.0_26",
            "172.23.223.128_26"
        ],
        "25": [
            "172.20.142.0_25",
            "172.20.235.128_25",
            "172.20.55.128_25",
            "172.21.101.128_25",
            "172.22.116.128_25",
            "172.22.124.0_25",
            "172.22.128.128_25",
            "172.22.131.128_25",
            "172.23.128.128_25",
            "172.23.129.0_25",
            "172.23.129.128_25",
            "172.23.193.0_25",
            "172.23.213.128_25",
            "172.23.239.0_25",
            "172.23.67.128_25"
        ],
        "24": [
            "172.20.168.0_24",
            "172.20.236.0_24",
            "172.21.104.0_24",
            "172.22.104.0_24",
            "172.22.173.0_24",
            "172.22.96.0_24",
            "172.23.116.0_24",
            "172.23.117.0_24",
            "172.23.144.0_24",
            "172.23.145.0_24",
            "172.23.210.0_24",
            "172.23.70.0_24",
            "172.23.71.0_24",
            "172.23.72.0_24",
            "172.23.97.0_24"
        ],
        "23": [
            "172.20.132.0_23",
            "172.20.224.0_23",
            "172.21.102.0_23",
            "172.21.126.0_23",
            "172.22.122.0_23",
            "172.23.114.0_23",
            "172.23.134.0_23",
            "172.23.142.0_23",
            "172.23.166.0_23",
            "172.23.246.0_23",
            "172.23.254.0_23",
            "172.23.48.0_23",
            "172.23.64.0_23",
            "172.23.68.0_23",
            "172.23.98.0_23"
        ]
    },
    "mtime": "2018-07-22T21:09:48Z"
}