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": [
            "172.20.12.80_29",
            "172.20.149.160_29",
            "172.20.150.112_29",
            "172.20.150.120_29",
            "172.20.154.80_29",
            "172.20.160.48_29",
            "172.20.162.8_29",
            "172.20.191.64_29",
            "172.21.113.64_29",
            "172.22.101.208_29",
            "172.22.111.144_29",
            "172.23.119.112_29",
            "172.23.197.0_29",
            "172.23.231.64_29",
            "172.23.237.208_29"
        ],
        "28": [
            "172.20.149.144_28",
            "172.20.154.64_28",
            "172.20.162.16_28",
            "172.20.172.112_28",
            "172.20.227.112_28",
            "172.20.227.96_28",
            "172.21.64.16_28",
            "172.21.92.32_28",
            "172.22.110.64_28",
            "172.22.151.32_28",
            "172.22.151.48_28",
            "172.22.181.144_28",
            "172.22.181.160_28",
            "172.23.237.192_28",
            "172.23.89.32_28"
        ],
        "27": [
            "172.20.20.32_27",
            "172.20.227.128_27",
            "172.20.59.64_27",
            "172.21.79.64_27",
            "172.21.79.96_27",
            "172.22.101.96_27",
            "172.22.148.128_27",
            "172.22.169.192_27",
            "172.23.119.128_27",
            "172.23.168.192_27",
            "172.23.183.32_27",
            "172.23.237.128_27",
            "172.23.237.160_27",
            "172.23.237.64_27",
            "172.23.237.96_27"
        ],
        "26": [
            "172.20.129.128_26",
            "172.20.129.192_26",
            "172.20.20.64_26",
            "172.20.31.64_26",
            "172.20.45.64_26",
            "172.21.67.64_26",
            "172.22.101.128_26",
            "172.22.151.64_26",
            "172.22.169.0_26",
            "172.22.169.128_26",
            "172.22.169.64_26",
            "172.23.183.64_26",
            "172.23.237.0_26",
            "172.23.93.0_26",
            "172.23.93.64_26"
        ],
        "25": [
            "172.20.150.128_25",
            "172.20.189.128_25",
            "172.20.20.128_25",
            "172.20.235.128_25",
            "172.20.45.128_25",
            "172.20.55.128_25",
            "172.21.79.128_25",
            "172.22.151.128_25",
            "172.23.100.0_25",
            "172.23.210.0_25",
            "172.23.210.128_25",
            "172.23.236.128_25",
            "172.23.43.128_25",
            "172.23.97.0_25",
            "172.23.97.128_25"
        ],
        "24": [
            "172.20.168.0_24",
            "172.20.177.0_24",
            "172.20.21.0_24",
            "172.20.236.0_24",
            "172.21.112.0_24",
            "172.21.82.0_24",
            "172.21.83.0_24",
            "172.22.126.0_24",
            "172.23.116.0_24",
            "172.23.117.0_24",
            "172.23.131.0_24",
            "172.23.217.0_24",
            "172.23.44.0_24",
            "172.23.86.0_24",
            "172.23.87.0_24"
        ],
        "23": [
            "172.20.178.0_23",
            "172.20.224.0_23",
            "172.21.80.0_23",
            "172.22.122.0_23",
            "172.22.144.0_23",
            "172.23.114.0_23",
            "172.23.128.0_23",
            "172.23.134.0_23",
            "172.23.166.0_23",
            "172.23.180.0_23",
            "172.23.218.0_23",
            "172.23.254.0_23",
            "172.23.48.0_23",
            "172.23.84.0_23",
            "172.23.98.0_23"
        ]
    },
    "mtime": "2018-02-20T22:10:13Z"
}