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.
The data shown may not match the actual data as the AS data is updated monthly.
The data shown may not match the actual data as the AS data is updated monthly.
AS52129 Proofpoint, Inc.
Spam statistics of AS52129 Proofpoint, Inc.
| Country | Number of networks | IP Addresses | Purpose of use |
|---|---|---|---|
| United States | |||
| Domain | Detected IP addresses | Spam active IPs | Spam rate |
| - | 373 | 18 | 4.83% |
| Websites count | IP addresses with websites | ||
| 152 | 114 |
Spam activity log
- spam active IP adresses - AS52129 Spam rate - United States average spam rate
Whois AS52129
SPAM active IP addresses in AS52129 Proofpoint, Inc.
| # | Sender IP | Detected | Last seen | Reported as spam |
|---|---|---|---|---|
| 1 | 208.56.131.135 | 2025-09-20 03:46:42 | 2026-10-23 11:37:01 | 3 |
| 2 | 208.56.145.249 | 2026-10-27 10:32:08 | 2026-10-30 10:12:43 | 4 |
| 3 | 208.56.244.197 | 2025-10-30 22:16:08 | 2026-10-26 12:26:26 | 5 |
| 4 | 208.56.139.90 | 2026-01-31 10:22:20 | 2026-10-27 20:57:57 | 5 |
| 5 | 208.56.140.159 | 2026-05-04 04:41:44 | 2026-10-26 13:23:02 | 7 |
| 6 | 208.56.156.252 | 2026-03-09 01:47:51 | 2026-10-29 14:59:30 | 7 |
| 7 | 208.56.245.4 | 2026-08-07 04:06:25 | 2026-10-26 20:25:37 | 8 |
| 8 | 208.56.128.250 | 2026-03-20 10:54:53 | 2026-10-27 11:53:31 | 8 |
| 9 | 208.56.132.62 | 2026-08-11 11:35:01 | 2026-10-17 13:38:34 | 11 |
| 10 | 208.56.156.208 | 2026-01-31 12:16:00 | 2026-10-25 03:08:04 | 11 |
| 11 | 208.56.138.105 | 2025-09-23 11:11:05 | 2026-10-27 14:38:10 | 11 |
| 12 | 208.56.141.143 | 2026-04-25 15:28:02 | 2026-10-30 11:10:12 | 11 |
| 13 | 208.56.152.21 | 2026-04-15 06:31:34 | 2026-10-29 18:36:40 | 12 |
| 14 | 208.56.244.185 | 2025-09-27 16:56:53 | 2026-10-30 09:46:37 | 13 |
| 15 | 208.56.146.89 | 2026-09-20 07:46:30 | 2026-10-30 10:25:26 | 14 |
| 16 | 208.56.250.135 | 2026-10-13 07:24:50 | 2026-10-29 14:47:43 | 16 |
| 17 | 208.56.251.134 | 2026-02-10 21:05:45 | 2026-10-29 11:26:46 | 20 |
| 18 | 208.56.138.0 | 2026-03-23 09:52:12 | 2026-10-30 09:59:03 | 20 |
| 19 | 208.56.130.12 | 2026-05-07 20:35:44 | 2026-10-30 08:19:56 | 21 |
| 20 | 208.56.241.172 | 2026-09-03 02:55:33 | 2026-10-30 08:55:06 | 31 |
Detected networks prefixes
| # | Network prefix | Country | Length | Detected IP addresses | Spam active IP addresses | Spam rate |
|---|---|---|---|---|---|---|
| 1 | 208.56.0.0/16 | United States | 65536 | 1245 | 32 | 0.00% |
| 2 | 143.55.144.0/20 | Germany | 4096 | 12 | 1 | 0.00% |
| 3 | 66.159.224.0/21 | United States | 2048 | 5 | 0 | 0.00% |
| 4 | 66.159.224.0/24 | United States | 256 | 1 | 0 | 0.00% |
| 5 | 66.159.224.0/19 | United States | 8192 | 20 | 0 | 0.00% |
| 6 | 66.159.232.0/21 | United States | 2048 | 4 | 0 | 0.00% |
| 7 | 91.207.212.0/24 | Netherlands | 256 | 4 | 0 | 0.00% |
| 8 | 91.207.212.0/23 | Netherlands | 512 | 4 | 0 | 0.00% |
| 9 | 91.209.104.0/24 | United States | 256 | 1 | 0 | 0.00% |
| 10 | 143.55.148.0/22 | United States | 1024 | 1 | 0 | 0.00% |
| 11 | 143.55.148.0/24 | United States | 256 | 1 | 0 | 0.00% |
| 12 | 185.132.180.0/24 | United Kingdom | 256 | 2 | 0 | 0.00% |
| 13 | 185.132.182.0/24 | United Kingdom | 256 | 2 | 0 | 0.00% |
| 14 | 185.132.183.0/24 | Netherlands | 256 | 1 | 0 | 0.00% |
| 15 | 185.183.28.0/24 | United States | 256 | 3 | 0 | 0.00% |
| 16 | 205.220.184.0/24 | Germany | 256 | 1 | 0 | 0.00% |
| 17 | 205.220.185.0/24 | Netherlands | 256 | 2 | 0 | 0.00% |
| 18 | 208.56.0.0/18 | United States | 16384 | 256 | 0 | 0.00% |
