| Subject | English | Vietnamese |
| comp., MS | country code | mã quốc gia (In telephony, the one-, two-, or three-character sequence that represents the country/region being called) |
| comp., MS | country/region code | mã quốc gia/mã vùng lãnh thổ (A two-character sequence in an Internet domain name address that indicates the country/region in which a host is located) |