Data as of Nov 8, 2026
Autonomous system

AS55819

Campaign Monitor Pty Ltd

Announces 6,400 addresses in 16 prefixes. None of it is anonymizer space.

Type
Business
AU

Announced prefixes

Arrived
PrefixTypeRPKI
27.126.144.0/21
since May 2016
Business
103.28.40.0/22
since Aug 2016
Business
103.28.40.0/23
since Aug 2016
Business
103.28.41.0/24
since Aug 2016
Business
103.28.42.0/23
since Aug 2016
Business
146.88.16.0/23
since May 2016
Business
146.88.16.0/24
since Aug 2016
Business
146.88.17.0/24
since Feb 2016
Business
146.88.18.0/24
since Aug 2016
Business
146.88.28.0/24
since Aug 2016
Business
180.189.136.0/22
since Aug 2016
Business
203.55.21.0/24
since Aug 2016
Business
203.55.138.0/24
since Aug 2016
Business
204.75.142.0/24
since Aug 2016
Business
205.166.177.0/24
since Dec 2016
Business
216.99.201.0/24
since Aug 2016
Business

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it