Thanks!
IP can get banned for days even using user directory & timing seems to be an average over an unknown window. The HN big query db is also appeared to be lacking user entries for users without comments or submissions in addition to synchronization delay. Also, ⊢ is a single character ;)
https://news.ycombinator.com/user?id=hello
than here:
https://news.ycombinator.com/login
because the second option, they will IP ban if you request more than once every 8 seconds. here are some open ones, I got tired of waiting so its not a full list:
0c 0e 0g 0i 0l 0n 0r 0s 0u 0v 1b 1f 1g 1h 1l 1n 1o 1t 1u 1w 1y 1z 2g 2i 2l 2o 2p 2q 2r 2s 2u 2w 2x 2z 34 35 38 3b 3c 3g 3h 3j 3k 3m 3o 3p 3q 3r 3s 3u 3w 3y 4b 4c 4d 4e 4f 4h 4i 4j 4l 4m 4o 4q 4r 4s 4v 4x 4y 4z 54 5a 5b 5c 5e 5i 5j 5m 5o 5p 5q 5r 5s 5t 5u 5w 5x 5y 5z 62 67 6b 6e 6h 6i 6j 6k 6l