Here is a list of nodes my telegram bot returns, appears there are still quite a few running old versions of the client:

Code:

[
{
"subver": "/Satoshi:0.10.4.1/",
"protocol": 70003,
"nodes": [
"165.227.226.221",
"217.169.182.114",
"78.129.185.31"
]
},
{
"subver": "/Satoshi:0.10.4.2/",
"protocol": 70003,
"nodes": [
"108.170.1.134",
"121.215.18.43",
"140.0.53.177",
"158.174.16.27",
"173.249.20.203",
"173.249.34.241",
"176.31.255.29",
"176.31.53.107",
"176.9.25.79",
"178.128.200.126",
"183.195.46.116",
"185.28.249.80",
"188.165.235.208",
"188.241.58.126",
"192.99.19.133",
"194.158.201.106",
"194.19.235.71",
"194.32.77.32",
"195.201.10.19",
"198.27.81.114",
"208.94.242.218",
"213.147.177.64",
"213.148.193.153",
"217.175.119.125",
"23.111.174.246",
"31.0.122.153",
"37.45.166.189",
"45.33.22.9",
"46.23.35.70",
"5.189.186.124",
"62.210.177.156",
"62.210.180.148",
"71.206.73.12",
"74.124.24.228",
"75.164.231.159",
"75.169.62.203",
"77.249.213.25",
"77.37.209.233",
"77.95.36.184",
"79.173.118.160",
"79.72.225.171",
"79.72.227.250",
"80.218.217.199",
"85.14.242.77",
"86.177.207.136",
"86.99.172.188",
"88.22.208.79",
"92.35.81.84",
"94.130.16.85",
"98.116.109.15"
]
},
{
"subver": "/Satoshi:0.10.4/",
"protocol": 70003,
"nodes": [
"161.53.18.50",
"173.212.202.33",
"198.50.204.112",
"50.225.198.67"
]
},
{
"subver": "/Satoshi:0.9.2.4/",
"protocol": 70002,
"nodes": [
"91.121.221.92"
]
},
{
"subver": "/Satoshi:0.9.2.5/",
"protocol": 70002,
"nodes": [
"52.14.92.197"
]
},
{
"subver": "/Satoshi:0.9.2.6/",
"protocol": 70002,
"nodes": [
"188.134.72.213",
"24.61.14.159",
"5.127.79.43",
"63.247.147.166",
"97.93.182.237"
]
},
{
"subver": "/Satoshi:0.9.2.7/",
"protocol": 70002,
"nodes": [
"213.21.201.153"
]
},
{
"subver": "/Satoshi:0.9.2.8/",
"protocol": 70002,
"nodes": [
"162.251.150.125"
]
}
]

For now, I am simply blacklisting older versions that try to connect to my client.