repetition - Transcribing long repeating phone numbers

I always have this problem of telling people my phone number which consists of a series of repeating numbers:

184 555 5555 (DO NOT CALL, this is just as an example)

I can tell people it is:

• one eight four, five five five, five five five five, or;


• one eight four, five, double five, double five, double five, or;


• one eight four, five, triple five, triple five, or;


• one eight four, five, sextuple five.

Is there a prescribed way or a widely practised method of transcribing long repeating phone numbers?

Answer

Say the numbers grouped as they are written. In the UK, it's more usual (in my experience) to use treble instead of triple, but it's all quite idiosyncratic.

Three-digit numbers are generally read out individually unless there is a trebled number or the second pair is doubled.

Groups of four numbers are generally read out individually unless there are groups.

Examples. Do not attempt to call these numbers.
184-555-5555: one eight four, treble five, double five, double five
118-500: one one eight five hundred
118-118: one one eight one one eight
118-177: one one eight one double seven
999: nine nine nine
112: one one two
01684-566778: oh one six eight four, five double six, double seven eight

In the UK, it's not usual to say things like fifty-five in telephone numbers:

01684-556677: oh one six eight four, double five, double six, double seven
not fifty-five, sixty-six, seventy-seven

Reading grouped digits as numbers like that is a continental thing: the French and Germans do it as their phone numbers are customarily represented in two-digit groups.