diff --git a/dnsapi2.md b/dnsapi2.md
index c3b2e8d..41c1e17 100644
--- a/dnsapi2.md
+++ b/dnsapi2.md
@@ -2385,6 +2385,8 @@ Report any bugs or issues [here](https://github.com/acmesh-official/acme.sh/issu
 
 ## 173. Use ZoneEdit DNS API
 
+This uses ZoneEdit DNS API for [zoneedit](https://www.zoneedit.com/) dns service. It was developed as a separate project [sslcertzoneedit](https://github.com/blueslow/sslcertzoneedit) with information provided in the [Zoneedit forum](https://forum.zoneedit.com/index.php?threads/automating-changes-of-txt-records-in-dns.7394/post-19772)
+
 Before first execution define the following in sh (or bash):
 ```sh
 export ZONEEDIT_ID="your id"