IP List distribution Teach Yourself Electricity and Electronics, 6th Edition, total 6
| IP | Country | City | ISP |
|---|---|---|---|
| 113.89.35.190 | China | Shenzhen | China Telecom |
| 120.229.45.113 | China | China Mobile Guangdong | |
| 171.213.185.77 | China | Chengdu | China Telecom |
| 171.214.202.177 | China | Chengdu | China Telecom |
| 183.14.135.130 | China | Shenzhen | China Telecom |
| 27.38.244.105 | China | Shenzhen | China Unicom Guangdong |