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.
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AS637 DoD Network Information Center

Spam statistics of AS637 DoD Network Information Center

United States
Number of networks
IP Addresses
Purpose of use
Detected IP addresses
Spam active IPs
Spam rate
Websites count
IP addresses with websites

Spam activity log

— spam active IP adresses

WhoIs AS: as637


Detected networks prefixes

#Network prefixCountryLengthDetected IP addressesSpam active IP addressesSpam rate
1137.233.192.0/18United States16384100.00%
2138.156.0.0/16United States65536200.00%
3138.163.160.0/22United States1024200.00%
4138.163.240.0/22United States1024200.00%
5143.211.0.0/16United States65536200.00%
6158.238.0.0/16United States65536500.00%
7158.239.0.0/16United States65536100.00%
8158.240.0.0/19United States8192100.00%
9158.240.32.0/19United States8192100.00%
10158.240.64.0/19United States8192100.00%
11158.240.128.0/17United States32768100.00%
12158.244.0.0/16United States65536200.00%
13158.245.0.0/16United States65536100.00%
14192.156.14.0/24United States256100.00%
15204.223.48.0/20United States4096100.00%
16204.223.96.0/20United States4096100.00%
17205.58.90.0/24United States256100.00%
18205.109.136.0/21United States2048200.00%