198.12.12.83
162.243.125.211

Nodes mentioned above and some other are stuck a height ~476303 . I saw this bug on my side also. The easy way to solve this is to delete subdirectories "chainstate", "blocks" and "database" in "./datacoin" and start daemon again. It synchronizes to the correct height then (597460).

Don't forget to stop daemon and to backup your wallet.dat BEFORE doing this.

I can try to debug this in case node operators having this problem will share their blockchain files (chainstate, blocks and database) and debug.log.