Wave Broadband up on the US west coast for many years has been the victim of offering gigabit fiber optic internet services.

Many of its clients of that service come from a country with a particularly "great firewall" one might say

Netflix's systems will often see these rafts of connections with weird non-matching timezones to the IP address, Chinese default language and other errant data and...simply declare the entire ISP a VPN/Proxy provider!

For a company with 500K+ customers in 3 states, this kind of disruption is absolutely brutal on their support lines, yet seems to happen almost every other month