Paragraph 13503(00-09)

Attribution: Guangzhou, Guangdong

Card type: mobile GSM card

Paragraph 13503( 10-49) is

H code of river urban area, namely:

Hebei Handan, Tangshan, Xingtai, Shijiazhuang, Baoding, Zhangjiakou and Chengde

Paragraph 13503(50-59) reads as follows

Yuncheng and Changzhi in Shanxi Province

Card type: GSM

Paragraph 13503(60-69) reads as follows

Jiamusi and Harbin in Heilongjiang Province

Card type: GSM

13503(70-99) is the H code in Henan, and their area is Luoyang.

Shangqiu, Anyang, Nanyang, Kaifeng, Pingdingshan,

Jiaozuo, Xinxiang, Puyang, Xuchang, Luohe, Sanmenxia, Xinyang, Zhoukou, Zhumadian and Jiyuan

Please know how I inquired to ensure the accuracy.

Composition of mobile phone number:

The first three digits are called network numbers to distinguish different telecom operators (for example, 139, 135. 188 is the network number of mobile company, 133 is the network number of telecom company, and 130 is the network number of Unicom company ...);

The four digits after the network number are the home number of the mobile phone, which is also called H(H0H 1H2H3) code in the industry.

The last four digits are called the subscriber number. H code is used to identify which city the mobile phone number belongs to, and H code is also used to identify which city the mobile phone belongs to, so that the telephone switching system can identify the address and connect the phone. The last four digits of the number you provided are useless. Only 13503** has me. The above is my query, which is accurate and reliable. (verifiable)