According to the proposed plan, on April 15, 2017 (01 day after the notice period for 13 provinces, cities implementing area code change on February 11, 2017 in phase 1), VNPT continued  to conduct area code change in phase 2 for 23 provinces and cities. This change would be performed within 01 month. Phone users can still dial both the new and the former codes within 30 days subsequent to the change time. Notices of the area code change will be carried out in the next 01 month. In case phone users dial the former codes, there will be instructions for re-dialing.

VNPT said that internal service trial-run in the company had occurred in line with the projected plan. Two-way trial-runs with other businesses such as  Viettel, MobiFone, Gtel, CMC, VTC, FPT and Vietnamobile also delivered successful results. Phone subscribers can simultaneously dial the former and the new codes until 23.59 May 14, 2017, and listen to notices of area code change until 23.59 June 16, 2017.

To automatically update new area codes in contact lists, customers can use the app VNPT Update Contacts - developed by VNPT Media Corporation. After downloading and setting up, customers open the app and select  the landline numbers required area code change, then tap update to perform the conversion. The app is available on Android and iOS:

App store: https://goo.gl/Q93naA

Google Play: https://goo.gl/Vd3DcG

In addition, customers can text MAVUNGPROVINCE (e.g.: MAVUNG DANANG) to 900 to look up area codes of provinces and cities.

For inquiries and service support, please contact the call center 18001091.

As of today, VNPT’s plan to change area codes has marked two third of its progress. According to the plan, the process of area code change will be conducted in 3 phases (for 59 out of 63 provinces and cities, except for Vinh Phuc, Phu Tho, Hoa Binh and Ha Giang).

Phase 1 (February 11) in 11 provinces/ cities, including: Son La, Lai Chau, Lao Cai, Dien Bien, Yen Bai, Quang Binh, Quang Tri, Thua Thien-Hue, Quang Nam, Da Nang, Thanh Hoa, Nghe An and Ha Tinh.

Phase 2 (April 15) in 23 provinces/ cities, including: Quang Ninh, Bac Giang, Lang Son, Cao Bang, Tuyen Quang, Thai Nguyen, Bac Can, Hai Duong, Ha Nam, Thai Binh, Nam Dinh, Ninh Binh, Ca Mau, Bac Lieu , Can Tho, Hau Giang, Tra Vinh, An Giang, Kien Giang, Soc Trang.

Phase 3 (June 17) in 23 provinces/ cities, including: Hanoi, Ho Chi Minh, Dong Nai, Binh Thuan, Ba Ria-Vung Tau, Quang Ngai, Binh Dinh, Phu Yen, Khanh Hoa, Ninh Thuan, Kon Tum, Dak Nong, Dak Lak, Lam Dong, Gia Lai, Vinh Long, Binh Phuoc, Long An, Tien Giang, Binh Duong, Ben Tre, Tay Ninh, Dong Thap.

Phase 2: April 15, 2017			Phase 3: June 17, 2017
Province/ City	Former code	New code	Province/ City	Former code	New code
Quang Ninh	33	203	Hanoi	4	243
Bac Giang	240	204	Ho Chi Minh	8	283
Lang Son	25	205	Dong Nai	61	251
Cao Bang	26	206	Binh Thuan	62	252
Tuyen Quang	27	207	Ba Ria –Vung Tau	64	254
Thai Nguyen	280	208	Quang Ngai	55	255
Bac Can	281	209	Binh Dinh	56	256
Hai Duong	320	220	Phu Yen	57	257
Hung Yen	321	221	Khanh Hoa	58	258
Bac Ninh	241	222	Ninh Thuan	68	259
Hai Phong	31	225	Kon Tum	60	260
Ha Nam	351	226	Dak Nong	501	261
Thai Binh	36	227	Dak Lak	500	262
Nam Dinh	350	228	Lam Dong	63	263
Ninh Binh	30	229	Gia Lai	59	269
Ca Mau	780	290	Vinh Long	70	270
Bac Lieu	781	291	Binh Phuoc	651	271
Can Tho	710	292	Long An	72	272
Hau Giang	711	293	Tien Giang	73	273
Tra Vinh	74	294	Binh Duong	650	274
An Giang	76	296	Ben Tre	75	275
Kien Giang	77	297	Tay Ninh	66	276
Soc Trang	79	299	Dong Thap	67	277

The area codes of Vinh Phuc, Phu Tho, Hoa Binh and Ha Giang are unchanged.