diff --git a/src/ogd/apis/models/APIResponse.py b/src/ogd/apis/models/APIResponse.py
index 68a8015..8820b44 100644
--- a/src/ogd/apis/models/APIResponse.py
+++ b/src/ogd/apis/models/APIResponse.py
@@ -130,6 +130,16 @@ def Status(self) -> ResponseStatus:
         :rtype: ResponseStatus
         """
         return self._status
+    @property
+    def OK(self) -> bool:
+        """Property indicating whether the APIResponse was successful or not.
+
+        Technically, this includes both a true "OK" response and any other 200-range response.
+
+        :return: True if the APIResponse status is in the 200 range, otherwise False.
+        :rtype: bool
+        """
+        return self.Status in ResponseStatus.SuccessStatuses()
 
     @property
     def AsDict(self):
diff --git a/src/ogd/apis/models/enums/ResponseStatus.py b/src/ogd/apis/models/enums/ResponseStatus.py
index 13566e0..b0bdf9c 100644
--- a/src/ogd/apis/models/enums/ResponseStatus.py
+++ b/src/ogd/apis/models/enums/ResponseStatus.py
@@ -81,6 +81,15 @@ class ResponseStatus(IntEnum):
     INSUFFICIENT_STORAGE = 507
     LOOP_DETECTED        = 508
 
+    @staticmethod
+    def SuccessStatuses() -> Set["ResponseStatus"]:
+        """Gets the set of valid 400-level "client" error responses.
+
+        :return: The set of valid 400-level "client" error responses.
+        :rtype: Set[ResponseStatus]
+        """
+        return {status for status in set(ResponseStatus) if status in range(200, 300)}
+
     @staticmethod
     def ClientErrors() -> Set["ResponseStatus"]:
         """Gets the set of valid 400-level "client" error responses.
@@ -88,7 +97,7 @@ def ClientErrors() -> Set["ResponseStatus"]:
         :return: The set of valid 400-level "client" error responses.
         :rtype: Set[ResponseStatus]
         """
-        return {status for status in set(ResponseStatus) if status in range(400, 499)}
+        return {status for status in set(ResponseStatus) if status in range(400, 500)}
 
     @staticmethod
     def ServerErrors() -> Set["ResponseStatus"]:
@@ -97,7 +106,7 @@ def ServerErrors() -> Set["ResponseStatus"]:
         :return: The set of valid 500-level "server" error responses.
         :rtype: Set[ResponseStatus]
         """
-        return {status for status in set(ResponseStatus) if status in range(500, 599)}
+        return {status for status in set(ResponseStatus) if status in range(500, 600)}
 
     def __str__(self):
         """Stringify function for ResponseStatus objects.