diff --git a/parsedmarc/resources/maps/base_reverse_dns_map.csv b/parsedmarc/resources/maps/base_reverse_dns_map.csv
index 69f0b49..7a563ed 100644
--- a/parsedmarc/resources/maps/base_reverse_dns_map.csv
+++ b/parsedmarc/resources/maps/base_reverse_dns_map.csv
@@ -23,7 +23,7 @@ antispameurope.com,Hornetsecurity,Email Security
 appriver.com,OpenText AppRiver,Email Security
 archerirm.us,RSA Archer GRC,SaaS
 arizona.edu,University of Arizona,University
-arpinet.am,Arpinet,Entertainment
+arpinet.am,Arpinet,ISP
 aruba.it,Aruba.it.Web Host
 asahikawa-med.ac.jp,Asahikawa Med,Healthcare
 ashtelstudios.com,Ashtel Studios,Healthcare