There's no substitute for thinking ahead. Who can say when we might need these HTTP error codes for civilisational errors:
Civilisational HTTP Error Codes
To be truly useful, HTTP error codes need to take into account possible future issues. We therefore propose the 8xx range of codes for errors pertaining to the civilisation in which the server is operating. Inspired by https://github.com/joho/7XX-rfc. Forks and pull requests encouraged!
- 80x ‘Temporary’ failures (but I’d wait a while before re-requesting):
802 NUCLEAR WINTER
803 GULF STREAM ERROR […]
We can but hope that one day there will be a need to deploy code 831.