IP List distribution Hecht - Optics 5th GLOBAL Edition c2017 txtbk.pdf, total 6
| IP | Country | City | ISP |
|---|---|---|---|
| 109.242.91.29 | Greece | Athens | Wind Hellas |
| 162.251.63.120 | Canada | GTHost | |
| 176.58.226.5 | Greece | Athens | Wind Hellas |
| 177.245.202.237 | Mexico | Puebla City | Megacable |
| 188.73.239.101 | Greece | Wind Hellas | |
| 194.116.46.50 | Italy | B.B.Bell SPA |