Vietnam has added more digits to its phone numbers, and the decision is currently confusing landline users, though it will ultimately enable the addition of thousands of new subscribers.
All six of Vietnam's fixed-line companies have added an extra digit so they can make more phone numbers available. More than 13 million subscribers have been affected in the change. The new change-over was made by adding an extra number after the area code, but each company has added a different number for their subscriber base.
- Viet Nam News on new digit addition to phone numbers