diff --git a/stix_shifter_modules/okta/stix_transmission/connector.py b/stix_shifter_modules/okta/stix_transmission/connector.py
index f52002e07..513a435dd 100644
--- a/stix_shifter_modules/okta/stix_transmission/connector.py
+++ b/stix_shifter_modules/okta/stix_transmission/connector.py
@@ -12,7 +12,7 @@ class InvalidMetadataException(Exception):
 
 class Connector(BaseJsonSyncConnector):
     OKTA_MAX_PAGE_SIZE = 1000
-    DOMAIN_PATTERN = re.compile(r'^(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?(\.)?)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]$')
+    DOMAIN_PATTERN = re.compile(r'^(?:(?:[a-z0-9]\.)|(?:[a-z0-9][a-z0-9-]{0,61}[a-z0-9]\.))+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]$')
 
     def __init__(self, connection, configuration):
         self.api_client = APIClient(connection, configuration)
diff --git a/stix_shifter_modules/vectra/stix_translation/transformers.py b/stix_shifter_modules/vectra/stix_translation/transformers.py
index 29c43e5f3..9123e5320 100644
--- a/stix_shifter_modules/vectra/stix_translation/transformers.py
+++ b/stix_shifter_modules/vectra/stix_translation/transformers.py
@@ -53,8 +53,7 @@ def transform(obj):
         try:
             if obj and isinstance(obj, list):
                 ip_pattern = re.compile(r'(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})')
-                domain_pattern = re.compile(r'^(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?(\.)?)+[a-z0-9][a-z0-9-]{0,'
-                                            r'61}[a-z0-9]$')
+                domain_pattern = re.compile(r'^(?:(?:[a-z0-9]\.)|(?:[a-z0-9][a-z0-9-]{0,61}[a-z0-9]\.))+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]$')
                 for index, row in enumerate(obj):
                     if domain_pattern.search(row):
                         continue