@binux #15 有个关注的 up 主说，视频广告是挣甲方的钱，投币是挣 B 站的钱，直播、赞助、周边是挣粉丝的钱，性质不一样😆

搜到的方法 1: 用类似 freecarrierlookup.com 的网站查运营商 GV 号全部是 Bandwidth.com ，但是运营商为 Bandwidth.com 并不都是 GV 号，也包含其他虚拟号码
搜到的方法 2:
At present, you can test whether a number is a Google Voice number by attempting to add it as a forwarding number to your own Google Voice account. If it is, you will receive an error message telling you that you cannot add a Google Voice number as a forwarding number. (If you receive no such message, you can simply cancel before confirming the number as a forward.)