Add connection.is_anycast to the response model

Author: laurentpellegrino

CHANGELOG.md

@@ -6,6 +6,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- New field `Connection.is_anycast` (JSON `connection.is_anycast`): whether the IP address is announced
+  via anycast, i.e. simultaneously from multiple locations.
 
 ## [5.0.1] - 2026-07-09
 ### Fixed

ipregistry/json.py

@@ -87,6 +87,7 @@ class Company(BaseModel):
 class Connection(BaseModel):
     asn: Optional[int] = None
     domain: Optional[str] = None
+    is_anycast: Optional[bool] = None
     organization: Optional[str] = None
     route: Optional[str] = None
     type: Optional[str] = None

tests/test_model.py

@@ -33,6 +33,19 @@ def test_connection_fields_optional(self):
         info = IpInfo(ip='8.8.8.8', connection={'asn': 15169})
         self.assertEqual(15169, info.connection.asn)
 
+    def test_connection_is_anycast(self):
+        """
+        Test that Connection exposes the is_anycast flag and leaves it unset
+        when the field is missing from the response
+        """
+        info = IpInfo(ip='8.8.8.8', connection={'asn': 15169, 'is_anycast': True})
+        self.assertTrue(info.connection.is_anycast)
+
+        info = IpInfo(ip='66.165.2.7', connection={'asn': 3853, 'is_anycast': False})
+        self.assertFalse(info.connection.is_anycast)
+
+        self.assertIsNone(Connection(asn=15169).is_anycast)
+
     def test_currency_format_fields_optional(self):
         """
         Test that CurrencyFormat validates when negative/positive are missing