diff --git a/Appendix-A---Test-Sites.md b/Appendix-A---Test-Sites.md
index fe05a77..00126e4 100644
--- a/Appendix-A---Test-Sites.md
+++ b/Appendix-A---Test-Sites.md
@@ -24,6 +24,7 @@ These are good sources to grab information on your results in one hit, but **do
 - [Privacycheck](https://privacycheck.sec.lrz.de/index.html) - **h**ttps://privacycheck.sec.lrz.de/index.html
    * [ETag](https://privacycheck.sec.lrz.de/passive/fp_etag/fp_etag.php) - **h**ttps://privacycheck.sec.lrz.de/passive/fp_etag/fp_etag.php
 ### :small_orange_diamond: Encryption / Ciphers / SSL/TLS / Certificates
+- [JA3](https://ja3er.com/) - **h**ttps://ja3er.com/
 - [BadSSL](https://badssl.com/) - **h**ttps://badssl.com/
 - [DCSec](https://cc.dcsec.uni-hannover.de/) - **h**ttps://cc.dcsec.uni-hannover.de/
 - [Qualys SSL Labs](https://www.ssllabs.com/ssltest/viewMyClient.html) - **h**ttps://www.ssllabs.com/ssltest/viewMyClient.html