diff --git a/make-aws-cloudfront-range.sh b/make-aws-cloudfront-range.sh
index 219a0d3..054def2 100755
--- a/make-aws-cloudfront-range.sh
+++ b/make-aws-cloudfront-range.sh
@@ -1,5 +1,8 @@
 #!/bin/sh
 
+# See: https://stackoverflow.com/a/69768584/5155484
 curl -f -s -# https://ip-ranges.amazonaws.com/ip-ranges.json | jq -r '.prefixes[] | select(.service == "CLOUDFRONT") | .ip_prefix' | sort > cloudfront-ips.txt
 curl -f -s -# https://ip-ranges.amazonaws.com/ip-ranges.json | jq -r '.ipv6_prefixes[] | select(.service == "CLOUDFRONT") | .ipv6_prefix' | sort >> cloudfront-ips.txt
+
+# Does not seem up to date: 06-2023
 #curl https://d7uri8nf7uskq.cloudfront.net/tools/list-cloudfront-ips | jq -r '.CLOUDFRONT_GLOBAL_IP_LIST  | join("\n")' | sort > cloudfront-ips.txt