diff --git a/src/gradient_labs/__init__.py b/src/gradient_labs/__init__.py
index ab06873..66e0326 100644
--- a/src/gradient_labs/__init__.py
+++ b/src/gradient_labs/__init__.py
@@ -15,3 +15,4 @@
 from .tool import *
 from .topic import *
 from .terminology_substitution import *
+from .ip_addresses import *
diff --git a/src/gradient_labs/_ip_addresses_list.py b/src/gradient_labs/_ip_addresses_list.py
new file mode 100644
index 0000000..9775127
--- /dev/null
+++ b/src/gradient_labs/_ip_addresses_list.py
@@ -0,0 +1,7 @@
+from ._http_client import HttpClient
+from .ip_addresses import IPAddresses
+
+
+def list_ip_addresses(*, client: HttpClient) -> IPAddresses:
+    rsp = client.get(path="ip-addresses", body={})
+    return IPAddresses.from_dict(rsp)
diff --git a/src/gradient_labs/client.py b/src/gradient_labs/client.py
index a2ba1bd..52d81a8 100644
--- a/src/gradient_labs/client.py
+++ b/src/gradient_labs/client.py
@@ -136,6 +136,9 @@
 )
 from ._traffic_group_exclusion_delete import delete_traffic_group_exclusion
 
+from .ip_addresses import IPAddresses
+from ._ip_addresses_list import list_ip_addresses
+
 from ._http_client import HttpClient, API_BASE_URL
 from .tool import *
 from .note import Note
@@ -934,3 +937,12 @@ def delete_traffic_group_exclusion(self, *, group_id: str, target_id: str) -> No
             group_id=group_id,
             target_id=target_id,
         )
+
+    # ==================== IP Addresses ====================
+
+    def list_ip_addresses(self) -> IPAddresses:
+        """list_ip_addresses returns the CIDR ranges used by the API and the egress IP.
+
+        Useful for customers who need to whitelist Gradient Labs IPs in their firewall
+        or security-group rules."""
+        return list_ip_addresses(client=self.http_client)
diff --git a/src/gradient_labs/ip_addresses.py b/src/gradient_labs/ip_addresses.py
new file mode 100644
index 0000000..87ae25c
--- /dev/null
+++ b/src/gradient_labs/ip_addresses.py
@@ -0,0 +1,10 @@
+from typing import List
+from dataclasses import dataclass
+from dataclasses_json import dataclass_json
+
+
+@dataclass_json
+@dataclass(frozen=True)
+class IPAddresses:
+    api: List[str]
+    egress: List[str]