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Product Announcement
Carrier restrictions on SMS content containing URLs, IP addresses, and contact information
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Carrier restrictions on SMS content containing URLs, IP addresses, and contact information
Announcement details​
China Telecom​
According to the latest requirements from China Telecom, SMS messages sent to China Telecom mobile numbers after May 20, 2025 that include the following content will face a relatively high risk of interception and delivery failure:​
  • URLs.​
  • IP addresses.​
  • Contact information, such as mobile numbers, landline numbers, and customer service numbers.​
China Unicom​
According to the latest requirements from China Unicom, SMS messages sent to China Unicom mobile numbers after June 30, 2025 that include the following content will face a relatively high risk of interception and delivery failure:​
  • URLs.​
  • IP addresses.​
  • Contact information, such as mobile numbers, landline numbers, and customer service numbers.​
China Mobile​
According to the latest requirements from China Mobile, SMS messages sent to China Mobile mobile numbers after July 10, 2025 that include the following content will face a relatively high risk of interception and delivery failure:​
  • URLs.​
  • Contact information, such as mobile numbers, landline numbers, and customer service numbers.​
Impacts​
The preceding control policies may cause your China Telecom, China Unicom, or China Mobile mobile number to be unable to receive all alert messages. We recommend that you add or switch to other alert channels to prevent alert information omissions. We sincerely apologize for any inconvenience this may cause.​
Last updated: 2026.07.10 14:02:23