[msclrhd]

I pronounce it /r@N/ -- i.e. like 'ring' but with the 'a' in comma, or the o in button. Although if it was a Rng formed by a pseudo-random sequence, then R-N-G would be apt ;).

[pvg]

If you want to use them, HN will take most funny squiggles: \ˈrəŋ\. It draws the line at emojis.