# Fastly::TlsBulkCertificateResponseAttributes ## Properties | Name | Type | Description | Notes | | ---- | ---- | ----------- | ----- | | **created_at** | **Time** | Date and time in ISO 8601 format. | [optional][readonly] | | **deleted_at** | **Time** | Date and time in ISO 8601 format. | [optional][readonly] | | **updated_at** | **Time** | Date and time in ISO 8601 format. | [optional][readonly] | | **not_after** | **Time** | Time-stamp (GMT) when the certificate will expire. Must be in the future to be used to terminate TLS traffic. | [optional][readonly] | | **not_before** | **Time** | Time-stamp (GMT) when the certificate will become valid. Must be in the past to be used to terminate TLS traffic. | [optional][readonly] | | **replace** | **Boolean** | A recommendation from Fastly indicating the key associated with this certificate is in need of rotation. | [optional][readonly] | [[Back to API list]](../../README.md#endpoints) [[Back to README]](../../README.md)