diff --git a/src/linkup/__init__.py b/src/linkup/__init__.py
index 5ed5a05..a6173d1 100644
--- a/src/linkup/__init__.py
+++ b/src/linkup/__init__.py
@@ -9,6 +9,7 @@
     LinkupFetchUrlIsFileError,
     LinkupInsufficientCreditError,
     LinkupInvalidRequestError,
+    LinkupIpNotWhitelistedError,
     LinkupNoResultError,
     LinkupPaymentRequiredError,
     LinkupTaskNotFoundError,
@@ -58,6 +59,7 @@
 FetchUrlIsFileError = LinkupFetchUrlIsFileError
 InsufficientCreditError = LinkupInsufficientCreditError
 InvalidRequestError = LinkupInvalidRequestError
+IpNotWhitelistedError = LinkupIpNotWhitelistedError
 NoResultError = LinkupNoResultError
 PaymentRequiredError = LinkupPaymentRequiredError
 ResearchTask = LinkupResearchTask
@@ -98,6 +100,7 @@
     "FetchUrlIsFileError",
     "InsufficientCreditError",
     "InvalidRequestError",
+    "IpNotWhitelistedError",
     "JSONObject",
     "LinkupAuthenticationError",
     "LinkupBudgetLimitExceededError",
@@ -113,6 +116,7 @@
     "LinkupFetchUrlIsFileError",
     "LinkupInsufficientCreditError",
     "LinkupInvalidRequestError",
+    "LinkupIpNotWhitelistedError",
     "LinkupNoResultError",
     "LinkupPaymentRequiredError",
     "LinkupResearchTask",
diff --git a/src/linkup/_client.py b/src/linkup/_client.py
index fb299fe..be51fde 100644
--- a/src/linkup/_client.py
+++ b/src/linkup/_client.py
@@ -19,6 +19,7 @@
     LinkupFetchUrlIsFileError,
     LinkupInsufficientCreditError,
     LinkupInvalidRequestError,
+    LinkupIpNotWhitelistedError,
     LinkupNoResultError,
     LinkupPaymentRequiredError,
     LinkupTaskNotFoundError,
@@ -1361,6 +1362,12 @@ def _raise_linkup_error(self, response: httpx.Response) -> None:
                     f"Original error message: {error_msg}."
                 )
             if response.status_code == 403:
+                if code == "IP_NOT_WHITELISTED":
+                    raise LinkupIpNotWhitelistedError(
+                        "The Linkup API rejected the request IP address (403). Make sure it is "
+                        "included in the API key's IP whitelist.\n"
+                        f"Original error message: {error_msg}."
+                    )
                 if code == "TASK_TYPE_NOT_SUPPORTED":
                     raise LinkupUnsupportedTaskTypeError(
                         "The Linkup API returned an unsupported task type error (403). \n"
diff --git a/src/linkup/_errors.py b/src/linkup/_errors.py
index a0721ae..4890895 100644
--- a/src/linkup/_errors.py
+++ b/src/linkup/_errors.py
@@ -29,6 +29,12 @@ class LinkupAuthenticationError(Exception):
     pass
 
 
+class LinkupIpNotWhitelistedError(Exception):
+    """IP whitelist error, raised when the request IP is not allowed by the API key."""
+
+    pass
+
+
 class LinkupPaymentRequiredError(Exception):
     """Payment required error, raised when the Linkup API returns a 402 status code.
 
diff --git a/tests/unit/client_test.py b/tests/unit/client_test.py
index 50c3d74..5c78bb1 100644
--- a/tests/unit/client_test.py
+++ b/tests/unit/client_test.py
@@ -474,6 +474,19 @@ async def test_async_search_structured_output_requires_schema(client: linkup.Cli
         """,
         linkup.AuthenticationError,
     ),
+    (
+        403,
+        b"""
+        {
+            "error": {
+                "code": "IP_NOT_WHITELISTED",
+                "message": "IP address 192.0.2.1 is not whitelisted",
+                "details": []
+            }
+        }
+        """,
+        linkup.IpNotWhitelistedError,
+    ),
     (
         403,
         b"""