Just a note: Bitnodes shows the number reachable nodes on their main page, which means those that allow incoming connections. They have a page for all the nodes (outgoing and incoming).

So, back to your topic. Due to decentralization, it's possible for few nodes to not be crawled by bitnodes, but can you point out which one allows incoming connections and isn't shown there?

The addrlocal should be a local IP, according to bitcoindeveloper, so it's reasonable to be 127.0.0.1. This is yours locally, and same is to everybody else.