This way they mask their actual IP addresses and maybe avoid detection by blacklists and such.

在这种方式下，他们就能掩盖其真正的IP地址并由此避开黑名单等的检测。

youdao

A subnet is identified by a subnet IP and mask.

子网由子网ip和掩码进行标识。

youdao

IP-based location awareness USES the user's network information, including subnet, net mask, and the Mac address of the router.

基于IP的位置识别利用了用户的网络信息，包括子网、网络掩码和路由器的mac地址。

youdao

If companies do continue to police their wiki-reputation, Fertik says, they'll most likely start using third-party IP addresses to mask changes.

FORBES: Magazine Article