Inspired by the HTTP Status Dogs from @mikelee :)
100
Continue
=> source
200
Ok
201
Created
202
Accepted
204
No content
207
Multi-status
226
IM used
300
Multiple choices
302
Found
307
Temporary redirect
401
Unauthorized
404
Not found
405
Method not allowed
408
Request timeout
409
Conflict
429
Too many requests
500
Internal server error
503
Service unavailable
504
Gateway timeout