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Alibaba Cloud DNS:Health checks

Last Updated:Jun 04, 2026

Configure health checks for address pools to monitor IP address availability in real time. Health checks enable automatic fault isolation and failover.

  • Supported methods: Ping health check, TCP health check, HTTP(S) health check.

  • Interval: Each monitoring node performs a health check every minute.

  • Monitoring nodes:

    Category

    Locations

    BGP nodes

    Zhangjiakou, Qingdao, Hangzhou, Shanghai, Hohhot, Shenzhen, Beijing

    International nodes

    China (Hong Kong), Germany, Singapore, California, Australia, Malaysia, Japan

    Carrier nodes

    Wuhan China Unicom, Dalian China Unicom, Nanjing China Unicom, Tianjin China Unicom, Qingdao China Telecom, Changsha China Telecom, Xi'an China Telecom, Zhengzhou China Telecom, Shenzhen China Mobile, Dalian China Mobile, Nanjing China Mobile