The calls starting with 9523 are Internet calls, which are generally harassment and fraud calls. You can set 9523 as the interception prefix in the mobile assistant.

1. Telephone number: refers to the number set by the telephone management department for telephone calls, including fixed telephone numbers and mobile telephone numbers. It generally consists of 7-8 digits (mobile phone number is 11 digits), and in the early days it was 5-6 digits. Enterprises, groups, factories, mines, institutions, etc. have set up designated internal communication numbers such as landline or mobile phones. This number is usually 4-8 digits long. Phone numbers also correspond to the number and name of each phone. The 11 digits used in China are encoded in different directions: the first 3 digits - the network identification code; digits 4-7 - the area code; digits 8-11 - the user number. After the division, all number segments starting with "13" have been released. China Unicom has three sub-number segments, namely No. 130, No. 131 and No. 132.

2. China Telecom has 1 sub-number segment with 133 segments, which is dedicated to Telecom CDMA; China Mobile has the remaining 6 sub-sectors, which increased from 134 to 139. According to the telecommunications number usage principles, it is generally 50% of the theoretical capacity, that is, the number resource utilization is close to saturation. According to the analysis of China Mobile's six number segments, the actual upper limit of mobile user number capacity should be around 300 million; China Unicom's upper limit is about 200 million yuan.

3. 9523 is not a bank number. If the bank proactively contacts the consumer, the mobile phone software will directly display the name of the bank. In addition, banks’ national customer service hotlines generally do not proactively contact consumers. Banks' national customer service hotlines are busy during most business hours, and phone numbers starting with 95 are not necessarily bank numbers. Numbers starting with 95 belong to the entire network call center. This number needs to apply for a national value-added telecommunications business license before it can be used. Bank phone numbers begin with 95, and the list of numbers starting with 95 includes companies in the energy, health care, services, retail, distribution and other industries. Phone numbers starting with 9523 are labeled as spam calls by most people.

For phone numbers starting with 9523, consumers can choose their own processing method, and can choose to answer or directly block. Banks generally do not proactively call consumers unless their bank loans or credit cards have expired for a long time. Banks are formal financial institutions that focus on customer experience. If the bank initiates an event, or there is a related event, the bank will usually notify consumers in the form of text messages. Consumers can also go to the business hall to apply for blocking high-frequency phone services.