Prefix 91 a Vietnam
Bayanan prefix 91 kamar yadda aka wallafa a tsarin lambobi na hukuma na Vietnam — rabon asali ne, ba mai ɗaukar kaya na yanzu na wata takamaiman lamba ba, tunda ana iya canja lambobi.
- Mai ɗaukar kaya (rabon asali)
- Vinaphone
- Nau'in layi
- Wayar hannu
- Misalin salo
- +84 91X XXX XXX