IP 位址硬要算的話, 應該也算是隱私的一部分吧~
此篇文章: How Long Does Your ISP Store IP-Address Logs? 有統計, 美國的 ISP 業者, 會儲存 IP 位址多久的時間. (註: 下述摘錄自此篇文章)
Time Warner Cable
- up to 6 months.
Comcast
- 180 day retention policy
Verizon
- 18 months
Qwest/Century
- approximately 1 year
Cox
- up to 6 months
Charter
- one year
DSL Extreme
- two weeks
Teksavvy
- two years
Eastlink
- one year