There were plans to replace/complement phone numbers by domain names, this is so funny!

> An ISDN (Integrated Service Digital Network) number is simply a telephone number. The intent of the members of the CCITT is to upgrade all telephone and data network service to a common service.

https://datatracker.ietf.org/doc/html/rfc1183#section-3.2

#rfc1183 #dns #rfc