CleanTalk keeps track of the IP addresses in spam messages, to help Hosting and ISP companies to know about suspicious activity in the address space of a company. The presence of IP addresses in this list, it is an occasion to start audit server security that uses a particular address.
81.91.80.0/20 - Web4U s.r.o.
Spam statistics 81.91.80.0/20 - Web4U s.r.o.
| Country | AS Number | Number of IPs | Purpose of use |
|---|---|---|---|
| Czechia | AS39790 | 4 096 | Unknown |
| Domain | Detected IP addresses | Spam active IPs | Spam rate |
| - | 522 | 11 | 0.00% |
| Websites count | IP addresses with websites | ||
| 13 714 | 511 |
WhoIs: 81.91.80.0/20
