• Area Code: 1-2 digits
• Subscriber Number: 5-7 digits

Area Code List

        18  Hoa Binh
        19  Ha Giang
        20  Lao Cai
        21  Vinh Phu
        22  Son La
        23  Dien Bien Phu, Lai Chau
        24  [Bac Giang, Bac Ninh - split into 240, 241?]
        240 Bac Giang [split from 24?]
        241 Bac Ninh [split from 24?]
        25  Lang Son
        26  Cao Bang
        27  Tuyen Quang
        28  Bac Thai [split to 280, 281?]
        280 Thai Nguyen
        281 Bac Can
        29  Yen Bai
        30  Ninh Binh
        31  Haiphong
        32  Hai Hung
        33  Bai Chay, Quangninh
        34  Ha Dong (Ha Tay province)
        35  Hanamninh, Nam Dinh, Nam Ha
        36  Thai Binh [was 38]
        37  Thanh Hoa
        38  Nghe An, Nhge Tinh, Vinh (Nghe An province)
        38  [Thai Binh changed to 36]
        39  Ha Tinh
        4   Hanoi
        5   (former Quang Ngai? see 55)
        50  Buon Ma Thuot
        51  [old Da Nang, Hoi An - changed to 511 on an unknown date]
        510 Quang Nam City
        511 Da Nang City [was 51]
        52  Dong Hoi, Quang Binh
        53  Dong Ha (Quang Tri province)
        54  Hue, Thua Thien Hue
        55  Quang Ngai
        56  Qui Nhon (Binh Dinh province)
        57  Phu Yen
        58  Nha Trang (Khanh Hoa province)
        59  Gia Lai, Pleiku
        6   Tay Ninh [now 66?], Vung Tau
        60  Kon Tum
        61  Bien Hoa
        62  Binh Thuan, Phan Rang, Phan Thiet
        63  Dalat, Lam Dong
        64  Ba Ria Vungtau
        65  Song Be (Binh Duong province)
        66  Tay Ninh [was 6?]
        67  Cao Lanh (Dong Thap province)
        68  Ninh Thuan
        7   Rach Gia
        70  Vinh Long [formerly 74]
        71  Can Tho
        72  Long An
        73  Mytho, Tien Giang
        74  Tra Vinh [Vinh Long now 70]
        75  Ben Tre
        76  An Giang, Chau Doc, Long Xuyen
        77  Ha Tien, Kien Giang
        78  Camau, Minh Hai
        79  Soc Trang
        8   Ho Chi Minh City

• 10 October 1999 - Hung Yen and Hai Duong area codes change
  • From 10 October 1999, Hai Duong provincial area code became +84 320 (0320 domestically) and Hung Yen provincial area code became +84 321 (0321 domestically). These replace the area code +84 32 (or 032 domestically) which covered both provinces until that time.
  • This change was implemented with the installation of an NEAX 61S telephone switch in Hung Yen. The area code changes also reflect the political split of the Hai Hung province into Hai Duong and Hung Yen provinces as of 1 July 1997.
• 12 September 1999 - Binh Duong and Binh Phuoc area codes change
  • From 12 September 1999, Binh Duong provincial area code became +84 650 (0650 domestically) and Binh Phuoc provincial area code became +84 651 (0651 domestically). These replace the area code +84 65 (or 065 domestically) which covered both provinces until that time.
• 1 April 1999 - Vinh Phuc and Phu Tho area codes change
  • From 1 April 1999, Vinh Phuc provincial area code became +84 211 (0211 domestically) and Phu Tho provincial area code became +84 210 (0210 domestically). These replace the area code +84 21 (or 021 domestically) which covered both provinces until that time. 6-digit subscriber numbers were not changed.
• October 1998 - Sufficient advance notice policy for number changes
  • Telephone subscribers are to be given at least 60 days notice for any numbering changes, according to policy decreed 16 October 1998.