fwiw, i recently had a need for checking the registration date of domains (to find the "age", for reputation purposes), and getting the information from rdap wa

fwiw, i recently had a need for checking the registration date of domains (to find the "age", for reputation purposes), and getting the information from rdap was pretty simple: a few http calls and parsing the response as json. i'll admit i didn't look at implementing whois (since it seems to be on the way out). it works well, except that some cctlds (eg .io) don't provide an rdap service yet. i think the reason being that icann doesn't authority over cctlds. i don't know how cctlds are run. i can imagine they would want to provide this service, it seems pretty core to their business. but perhaps there are reasons why rdap is hard for them to implement? (aside: i'm wondering why the article was posted. it isn't recent, and is light on information).