云主机笔记ExtraVM，一个成立于2014年美国主机商，有提供VPS主机、虚拟空间、独立服务器等产品，数据中心涵盖美国、加拿大、英国、法国、新加坡等9个机房和地区。云服务器VPS主机的特点提供1G带宽不限制流量、NVMe SSD硬盘，可以选择安装 Linux 和 Windows系统。
商家提供的云服务器VPS主机，根据付款周期不同价格是不同的。比如季付和年付比月付便宜。
ExtraVM优惠码（达拉斯机房月付3折）：DAL70
ExtraVM优惠码（常规首月75折）：25SWITCH
这里我们可以根据需要选择机房。
各个机房大部分是不限制流量的，但是有几个机房流量需要做如下说明：
Dallas, Texas - Unmetered bandwidth. If usage surpasses 20TB, we may limit outbound speed if we find the use case is abusive or goes against our terms of service.
Miami, Florida - Unmetered bandwidth.
Los Angeles, California - Unmetered bandwidth.
Piscataway, New Jersey (NYC Metro) - Unmetered bandwidth.
Singapore - Additional bandwidth not possible, you will need to upgrade your VPS plan completely.
Sydney, Australia - Additional bandwidth is $3.60 per 1TB.
Vint Hill, Virginia - Unmetered bandwidth.
Montreal, Canada - Unmetered bandwidth.
London, United Kingdom - Unmetered bandwidth.
Gravelines, France - Unmetered bandwidth.
Tokyo, Japan - As of March 1st, 2023, plans are limited to 1TB bandwidth per 1GB RAM. After your monthly limit is hit your VPS will be limited to roughly 10Mbps. Additional high speed bandwidth can be ordered for $3.60 per 1TB.
