Examples:

  • One oh two Main Street
  • Four oh seven PM
  • Biology one oh one
  • Eight six seven, five three oh nine
  • Four oh four: Not found

Not just a US thing, so I hope this is okay to ask here. I have just never encountered this is any language other than English. Is it simply that O and 0 look similar, and that “oh” has fewer syllables than “zero”? I have not heard a good explanation from coworkers who I’ve asked.