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": [
            "172.20.167.176_29",
            "172.20.18.112_29",
            "172.20.5.160_29",
            "172.21.101.104_29",
            "172.21.74.32_29",
            "172.21.84.64_29",
            "172.22.169.144_29",
            "172.23.128.96_29",
            "172.23.163.48_29",
            "172.23.215.224_29",
            "172.23.215.232_29",
            "172.23.215.240_29",
            "172.23.215.248_29",
            "172.23.73.80_29",
            "172.23.76.96_29"
        ],
        "28": [
            "172.20.149.16_28",
            "172.20.158.64_28",
            "172.20.158.80_28",
            "172.20.172.112_28",
            "172.20.235.96_28",
            "172.20.47.144_28",
            "172.21.125.208_28",
            "172.22.149.192_28",
            "172.22.149.64_28",
            "172.22.169.16_28",
            "172.22.169.32_28",
            "172.22.169.48_28",
            "172.23.100.224_28",
            "172.23.163.32_28",
            "172.23.73.64_28"
        ],
        "27": [
            "172.20.158.32_27",
            "172.20.175.32_27",
            "172.20.33.96_27",
            "172.20.4.96_27",
            "172.21.64.96_27",
            "172.22.146.128_27",
            "172.23.128.64_27",
            "172.23.162.32_27",
            "172.23.61.0_27",
            "172.23.61.32_27",
            "172.23.66.192_27",
            "172.23.66.64_27",
            "172.23.66.96_27",
            "172.23.76.64_27",
            "172.23.97.192_27"
        ],
        "26": [
            "172.20.51.64_26",
            "172.20.59.64_26",
            "172.22.110.64_26",
            "172.22.135.64_26",
            "172.22.149.128_26",
            "172.23.101.192_26",
            "172.23.150.64_26",
            "172.23.162.64_26",
            "172.23.230.64_26",
            "172.23.61.64_26",
            "172.23.66.0_26",
            "172.23.66.128_26",
            "172.23.97.0_26",
            "172.23.97.128_26",
            "172.23.97.64_26"
        ],
        "25": [
            "172.20.177.0_25",
            "172.20.177.128_25",
            "172.20.189.128_25",
            "172.20.235.128_25",
            "172.20.28.128_25",
            "172.20.48.128_25",
            "172.20.51.128_25",
            "172.20.59.128_25",
            "172.22.120.128_25",
            "172.22.127.128_25",
            "172.22.135.128_25",
            "172.23.162.128_25",
            "172.23.213.128_25",
            "172.23.230.128_25",
            "172.23.67.128_25"
        ],
        "24": [
            "172.20.19.0_24",
            "172.20.236.0_24",
            "172.20.29.0_24",
            "172.22.138.0_24",
            "172.22.139.0_24",
            "172.22.179.0_24",
            "172.22.180.0_24",
            "172.22.96.0_24",
            "172.23.109.0_24",
            "172.23.131.0_24",
            "172.23.178.0_24",
            "172.23.182.0_24",
            "172.23.70.0_24",
            "172.23.71.0_24",
            "172.23.72.0_24"
        ],
        "23": [
            "172.20.224.0_23",
            "172.21.126.0_23",
            "172.21.72.0_23",
            "172.22.136.0_23",
            "172.23.110.0_23",
            "172.23.114.0_23",
            "172.23.134.0_23",
            "172.23.166.0_23",
            "172.23.180.0_23",
            "172.23.228.0_23",
            "172.23.246.0_23",
            "172.23.48.0_23",
            "172.23.64.0_23",
            "172.23.68.0_23",
            "172.23.74.0_23"
        ]
    },
    "mtime": "2019-03-18T12:12:44Z"
}