> Do people who write code not know about IANA? I expect that if I'd walked around my last place of employment, asking software developers if they knew what IA

> Do people who write code not know about IANA? I expect that if I'd walked around my last place of employment, asking software developers if they knew what IANA was, probably a single-digit percentage would have known (at best, small double digits). That's not a dig at them; I think you have an unrealistic expectation of what people should and do know about stuff these days.