Vietnam Useful telephone numbers
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| 0 | National Domestic Direct Dialing Access Code |
| 00 | International Direct Dialing Access Code |
| 101 | Domestic Long Distance Telephone Service |
| 105 | Viet Nam Paging Service (in English) |
| 106 | Paging Service Enquiries |
| 107 | Viet Nam Paging Service (in Vietnamese) |
| 1080 | Social and Cultural Information Clearing up Queries Service |
| 1081 | Talking Yellow Pages |
| 1088 | Connecting Customers to Consultants in the fields of healthcare, nutrition, drug preventive measures, law, informatics, construction, tourism, estate trading, education and training, intellectual property, love-marriage-family matters |
| 110 | International Telephone Service |
| 113 | Police |
| 114 | Fire Brigade |
| 115 | Ambulance |
| 116 | Phone Number Enquiries |
| 117 | Time Inquiries |
| 118 | Ring Back Test |
| 119 | Advice on Telephone Repairs |
| 133 / 131 | Ha Noi ABC Paging Service |
| 141 | Vinaphone Paging Service |
| 142 | International Telephone Service Rate |
| 143 | International Telephone Service Enquiries |
