diff --git a/parsedmarc/resources/maps/base_reverse_dns_map.csv b/parsedmarc/resources/maps/base_reverse_dns_map.csv
index 0aea40a8..5a127849 100644
--- a/parsedmarc/resources/maps/base_reverse_dns_map.csv
+++ b/parsedmarc/resources/maps/base_reverse_dns_map.csv
@@ -83,6 +83,8 @@ cardinalhealth.com,Cardinal Health,Healthcare
 carrierzone.com,carrierzone,Email Security
 ccc-group.com,Canada Colors and Chemicals Limited (CCC),Industrial
 celeste.fr,CELESTE,ISP
+centerasecurity.dk,Centera Email Defence,Email Security
+centerasecurity.com,Centera Email Defence,Email Security
 centralinteractiva.com.mx,Central Interactiva,Marketing
 centurylink.com.pe,Cirion,MSP
 charter.net,Charter,ISP