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Object Storage Service:Anti-DDoS fees

Last Updated:Aug 13, 2026

If you use OSS DDoS protection, Object Storage Service (OSS) charges Anti-DDoS fees based on the number of your Anti-DDoS instances, the amount of protected traffic, and the number of protected requests.

For unit prices of each billable item, see Object Storage Service pricing.

Billable items

Billable item

Billing rule

Billing cycle

Billing method

Anti-DDoS resource reservation fee (SecReserved)

This fee is charged based on the number of Anti-DDoS instances and their usage duration.

Billed hourly. Bills are generated after the current billing cycle ends. The exact bill generation time is determined by the system.

  • Pay-as-you-go: Anti-DDoS resource reservation fee = Number of Anti-DDoS instances × Usage duration × Hourly unit price

  • Resource plan: Go to the Object Storage Service (OSS) Resource Plan purchase page and set Resource Plan Type to Anti-DDoS Basic Plan.

Anti-DDoS resource early release fee (SecEarlyReleased)

If an OSS Anti-DDoS instance is used for less than 7 days, an early release fee is charged for the remaining time of the 7-day period. The remaining time is calculated as (7 days × 24 hours - usage duration of the Anti-DDoS instance).

  • Pay-as-you-go: Anti-DDoS resource early release fee = Hourly unit price of the Anti-DDoS resource reservation fee × (7 days × 24 hours - usage duration of the Anti-DDoS instance)

  • Resource plan: Go to the Object Storage Service (OSS) Resource Plan purchase page and set Resource Plan Type to Anti-DDoS Basic Plan.

Anti-DDoS traffic protection fee (SecFlow)

This fee is calculated based on the total public outbound traffic and inbound traffic for all buckets attached to the Anti-DDoS instance. The larger of the two traffic values is used for billing.

  • Pay-as-you-go: Anti-DDoS traffic protection fee = The greater of the public outbound traffic or inbound traffic × Unit price per GB

  • Resource plan: Not supported

Anti-DDoS request protection fee (SecRequest)

The fee is calculated based on the number of OSS API requests for all buckets attached to the Anti-DDoS instance.

Note

Both successful and failed requests are counted.

  • Pay-as-you-go: Anti-DDoS request protection fee = Number of requests × Unit price per 10,000 requests / 10,000

  • Resource plan: Not supported

References

  • For more information about how to query OSS hourly billing data, see Query hourly data of OSS.

  • For more information about the billing details of the billable items, see Query bills.