The Monero Research Lab (MRL) has decided to recommend that all Monero node operators enable a ban list
https://github.com/Boog900/monero-ban-list/blob/main/ban_list.txt
- Download the ban list and:
./monerod --ban-list <file-path-to-ban-list>
🧐 https://gist.github.com/Rucknium/76edd249c363b9ecf2517db4fab42e88
Looks like it might be something on your end because I just tried one of the IPs that yours gave an invalid for and it works fine.