【介绍】

域名状态主要有EPP域名状态和RRP域名状态两种版本。

EPP域名状态：可扩展规定协议域名状态代码；Extensible Provisioning Protocol （EPP） Domain Status Codes。
RRP域名状态：注册局-注册商协议域名状态代码；Registry Registrar Protocol （RRP） Domain Status Codes。

参考：https://amon.org/epp
参考：https://amon.org/rrp

相比RRP状态，EPP状态更容易理解、更加详细，如：CLIENT DELETE PROHIBITED表示客户端不可以删除域名。

EPP状态中的SERVER和CLIENT分别对应RRP协议中的注册局和注册商。

RRP由Verisign开发定义，用于.com/.net域名状态，部分国家域名也采用该方法。

【解释】

RRP域名状态有八种：

ACTIVE: 正常/激活

REGISTRY-LOCK: 注册局锁定(域名转移、更新、续费、删除至少有一项不能操作，域名可以进行解析使用)

REGISTRAR-LOCK: 注册商锁定(域名转移、更新、续费、删除至少有一项不能操作，域名可以进行解析使用)

REGISTRY-HOLD: 注册局留置（有争议域名或者有问题域名，不能进行任何操作）

REGISTRAR-HOLD: 注册商留置（过期域名，可以进行续费操作）

REDEMPTIONPERIOD: 赎回期 （域名过期30后由注册局设置，此状态保持30天，之后进入”即将删除”）

PENDINGRESTORE: 即将恢复 （注册局接到注册商的restorer命令，此此状态保持7天）

PENDINGDELETE: 即将删除

英文文档：

ACTIVE: The registry sets this status. The domain can be modified by the registrar. The domain can be renewed. The domain will be included in the zone if the domain has been delegated to at least one name server.

REGISTRY-LOCK: The registry sets this status. The domain can not be modified or deleted by the registrar. The registry must remove the REGISTRY-LOCK status for the registrar to modify the domain. The domain can be renewed. The domain will be included in the zone if the domain has been delegated to at least one name server.

REGISTRAR-LOCK: The sponsoring registrar sets this status. The domain can not be modified or deleted. The registrar must remove REGISTRAR-LOCK status to modify the domain. The domain can be renewed. The domain will be included in the zone.

REGISTRY-HOLD: The registry sets this status. The domain can not be modified or deleted by the registrar. The registry must remove the REGISTRY-HOLD status for the registrar to modify the domain. The domain can be renewed. The domain will not be included in the zone.

REGISTRAR-HOLD: The sponsoring registrar sets this status. The domain can not be modified or deleted. The registrar must remove REGISTRAR-HOLD status to modify the domain. The domain can be renewed. The domain will not be included in the zone.

REDEMPTIONPERIOD: The registry sets this status when a registrar requests that the domain name be deleted from the registry and the domain has been registered for more than 5 calendar days (if the delete request is received within 5 days of initial domain registration it will instead be deleted immediately). The domain will not be included in the zone. The domain can not be modified or purged; it can only be restored. Any other registrar requests to modify or otherwise update the domain will be rejected. The domain will be held in this status for a maximum of 30 calendar days.

PENDINGRESTORE: The registry sets this status after a registrar requests restoration of a domain that is in REDEMPTIONPERIOD status. The domain will be included in the zone. Registrar requests to modify or otherwise update the domain will be rejected. The domain will be held in this status while the registry waits for the registrar to provide required restoration documentation. If the registrar fails to provide documentation to the registry within 7 calendar days to confirm the restoration request, the domain will revert to REDEMPTIONPERIOD status. The domain status will be set to ACTIVE only if the registrar provides documentation to the registry within 7 calendar days to confirm the restoration request.

PENDINGDELETE: The registry sets this status after a domain has been set in REDEMPTIONPERIOD status and the domain has not been restored by the registrar. The domain will not be included in the zone. Once in this status all registrar requests to modify or otherwise update the domain will be rejected. The domain will be purged from the registry database after being in this status for 5 calendar days.