diff --git a/parsedmarc/resources/maps/base_reverse_dns_map.csv b/parsedmarc/resources/maps/base_reverse_dns_map.csv
index 8dfba652..43748fd2 100644
--- a/parsedmarc/resources/maps/base_reverse_dns_map.csv
+++ b/parsedmarc/resources/maps/base_reverse_dns_map.csv
@@ -667,3 +667,6 @@ zoho.in,Zoho,SaaS
 zohocorporation.com,Zoho,SaaS
 zoneedit.com,Zoneedit,Web Host
 zsttk.ru,TTK,ISP
+zyner.org,Zyner,Email Provider
+zyner.net,Zyner,Email Provider
+zyner.one,Zyner,Email Provider