Background

If users have higher requirements for domain name resolution, they can submit a ticket to enable the enterprise version feature and upgrade the current domain name to the enterprise version.

Operation guide

1. Back up current resolution records

Click [Resolution] on the right side of the domain name to enter the domain name details page. Check all resolution records, click [Download and Select] in the upper left corner, and download the corresponding CSV file of the domain name. 

2. Upgrade the domain name to the enterprise version

On the domain name list page, click [Upgrade] on the right side of the corresponding domain name to enter the domain name upgrade page. Select [Enterprise Version] for the product version and submit it.

3. Modify NS

After the domain name is upgraded to the enterprise version, please go to the domain name registrar to modify the NS to: sv1.bdydns.cn sv2.bdydns.cn sv3.bdydns.cn sv4.bdydns.cn. It takes 48 hours for the system to update after the NS server is modified. If you have modified the NS and waited for 48 hours, please verify whether the NS modification has taken effect. After confirming that the NS has taken effect correctly, click [Confirm NS Modification] on the right side of the corresponding domain name in the domain name list page. The system will delete the original basic version or discount version domain name and resolution records. Note: Be sure to verify that the changes have taken effect before clicking OK; otherwise, it may cause resolution failure and result in inaccessible access ## 4. Modify the resolution records of the backup After the upgrade, the enterprise version retains the resolution records for the default line from the basic version. However, for non-default lines, users need to define the effective region and re-upload them. Therefore, complete the following operations on the CSV file downloaded in step II: - Delete all records with the internet connection type [Default] - For all records with non-[Default] internet connection types, redefine specific region information in the [Internet Connection Type] field. The supported formats are as follows:

Internet connection type	Examples of internet connection type formats to be filled in the table	Supported optional regions (need to be filled in the table according to the format listed in the second column)
Telecom	Yunnan Branch of China Telecom	Yunnan Henan Zhejiang Shanghai Shanxi Hubei Beijing Jiangxi Hebei Hainan Gansu Jilin Liaoning Heilongjiang Fujian Chongqing Inner Mongolia Tibet Tianjin Ningxia Guizhou Guangxi Guangdong Qinghai Shaanxi Shandong Sichuan Hunan Anhui Xinjiang Jiangsu
mobile	Yunnan Branch of China Mobile	Yunnan Henan Zhejiang Shanghai Shanxi Hubei Beijing Jiangxi Hebei Hainan Gansu Jilin Liaoning Heilongjiang Fujian Chongqing Inner Mongolia Tibet Tianjin Ningxia Guizhou Guangxi Guangdong Qinghai Shaanxi Shandong Sichuan Hunan Anhui Xinjiang Jiangsu
Unicom	Yunnan Branch of China Unicom	Yunnan Henan Zhejiang Shanghai Shanxi Hubei Beijing Jiangxi Hebei Hainan Gansu Jilin Liaoning Heilongjiang Fujian Chongqing Inner Mongolia Tibet Tianjin Ningxia Guizhou Guangxi Guangdong Qinghai Shaanxi Shandong Sichuan Hunan Anhui Xinjiang Jiangsu
Education network	North China. Education Network	South China, Central China, North China, East China, Southwest China, Northwest China, Northeast China
Search engine (Baidu)	Search engine (Baidu). Line	Search engine (Baidu)
China Tietong	South China Branch of China Tietong	South China, Central China, North China, East China, Southwest China, Northwest China, Northeast China
Dr. Peng	South China Branch of Dr. Peng	South China, Central China, North China, East China, Southwest China, Northwest China, Northeast China
North China Radio and Television	Shanghai. North China Radio and Television	Shanghai
Shanghai Wasu	Hangzhou. Shanghai Wasu	Hangzhou
Hong Kong, Macao and Taiwan	Hong Kong. line	Hong Kong, Macao and Taiwan
Abroad	Japan. line	Japan India Germany Russia Canada South Korea, Indonesia Malaysia Philippines Thailand Singapore Vietnam Saudi Arabia Turkey Australia France Spain United Kingdom Ukraine United States Argentina Brazil Mexico

5. Upload the resolution records of the backup

Enter the Domain Name Details page, click [+Batch Import Resolution] in the upper left corner, select the CSV file backed up and downloaded in Step II to upload, and then click OK. The non-default resolutions will be re-added.