diff --git a/namecheap.tf b/namecheap.tf
index 8141130..f6703e5 100644
--- a/namecheap.tf
+++ b/namecheap.tf
@@ -11,6 +11,9 @@ variable "caladan-ips" {
   }
 }
 
+// these are subdomains for services hosted on the host named `caladan`
+// both A and AAAA records should be made for them pointing to caladan's ipv4
+// and ipv6 respectively
 variable "caladan-hostnames" {
   type = set(string)
   default = ["@"]