diff --git a/CI-Servers.md b/CI-Servers.md
index 2bda0fc..58c3970 100644
--- a/CI-Servers.md
+++ b/CI-Servers.md
@@ -72,16 +72,16 @@ Most CI servers run on AWS, and are maintained by (mainly) @hsbt and @mame
   * "ArchLinux+clang" is maintained by @naruse
   * "macOS" series is maintained by @hsbt and @ko1
   * "WSL2" runs on Azure, and is maintained by @mame
-  * "SPARC" series is supported by Fujitsu and is maintained by @mame
+  * "SPARC" series is supported by Fujitsu, and maintained by @mame
 * arm64 (aarch64), arm32
-  * "Ubuntu arm neoverse" is maintained by @jaruga
+  * "Ubuntu arm neoverse" is supported by Arm and Equinix on their [Works on Arm program](https://github.com/WorksOnArm/equinix-metal-arm64-cluster), and maintained by @jaruga
   * "Ubuntu armv7l eabihf" is maintained by @naruse
   * "Android" runs on [GitHub Actions](https://github.com/mame/rubyci-android), and is maintained by @mame
   * "Raspbian" series is maintained by @znz
 * ppc64le
-  * "ppc64le" (Ubuntu) is maintained by @jaruga
+  * "ppc64le" (Ubuntu) is supported by IBM and [Oregon State University (OSU) Open Source Lab (OSL) Power Development Hosting](https://osuosl.org/services/powerdev/) and maintained by @jaruga
 * s390x
-  * "s390x" (Ubuntu) is maintained by @jaruga
+  * "s390x" (Ubuntu) is supported by IBM on [LinuxOne Community Cloud](https://developer.ibm.com/articles/get-started-with-ibm-linuxone/) or [Oregon State University (OSU) Open Source Lab (OSL) IBM-Z Development Hosting](https://osuosl.org/services/ibm-z/) (I am not sure about it), and maintained by @jaruga
   * "s390x" (RHEL 7.1) is maintained by @ReiOdaira
 
 You can check [How To Maintain RubyCI Servers](How-To-Maintain-RubyCI-Servers) to know how to setup the servers.