All of the phone numbers in my home town still follow this pattern. Mostly because it's a tiny town and, while there are 3 exchanges, they all start with 92. In fact, up until a few years ago some of the older stores around town, the ones that hann't updated their awnings or signage since the 50s, advertised their phone numbers in this manner. Unfortunately, many of them have now closed, so this adorable piece of antiquity was lost.