That is an onion address and appears to be a bitcoin node because of the 8333 port.

Here's my lightning node: https://amboss.space/c/satbase

Here's the connection information (aka URI): 0390cc12f782259427bdc45a283705f4c20ccbdff064ed43f6b74fefcafe9eb1f7@4ktdvcvhuytnj3hermy3fiqtj5b7lzspjzdhsgg6xafc6tjrvik6q4ad.onion:9735