贝克

The last character designates the seal material.

最后一个字符指定的密封材料。

ICANN last year had predicted, the initial 4 billion IP address resources in the remaining 17 percent can be used alone, and the new address resources will be exhausted the next five years.

ICANN去年曾预测，最初的40亿个IP地址资源中仅剩下17%可用，而新地址资源也将于未来5年内耗尽。