To be fair, the website says: "If you send any other three digit number that's not in that list, we'll return it too." They seem to simply truncate the number.

To be fair, the website says: "If you send any other three digit number that's not in that list, we'll return it too." They seem to simply truncate the number. E.g., http://httpstat.us/39487394587394857349587 http://httpstat.us/39487394587394857349587 returns "394 Unknown status", but http://httpstat.us/200129038123 http://httpstat.us/200129038123 will return "200 OK"