Yes I remember that, and also http was on port 82 before it was assigned 80, if memory serves me right.
I reserved port 63 for whois++, that by the way rests fine where it is, in very few people's memories, during the same era. The motivation went something like 43 for whois protocol, 53 for ns, so 63 looks like evolution, though there were no aspirations to replace the name service protocol.
Registering MIME types was also easy:
https://www.iana.org/assignments/media-types/application/msw...