diff --git a/src/Functions/FunctionsCodingIP.h b/src/Functions/FunctionsCodingIP.h
index 8f55a106e5a..f25b25b12f0 100644
--- a/src/Functions/FunctionsCodingIP.h
+++ b/src/Functions/FunctionsCodingIP.h
@@ -87,7 +87,7 @@ namespace detail
 
             if (null_map && (*null_map)[i])
             {
-                vec_res[i] = 0;
+                std::fill_n(&vec_res[i], IPV6_BINARY_LENGTH, 0);
                 src_offset = src_next_offset;
                 if constexpr (exception_mode == IPStringToNumExceptionMode::Null)
                     (*vec_null_map_to)[i] = true;
diff --git a/tests/queries/0_stateless/02303_cast_nullable_to_custom_types.reference b/tests/queries/0_stateless/02303_cast_nullable_to_custom_types.reference
index 50eae1e83ac..159ee805f26 100644
--- a/tests/queries/0_stateless/02303_cast_nullable_to_custom_types.reference
+++ b/tests/queries/0_stateless/02303_cast_nullable_to_custom_types.reference
@@ -17,8 +17,16 @@ true
 \N
 0.0.0.0
 \N
+0.0.0.0
+\N
+\N
+\N
 0
 \N
 ::
 \N
+::
+\N
+\N
+\N
 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0
diff --git a/tests/queries/0_stateless/02303_cast_nullable_to_custom_types.sql b/tests/queries/0_stateless/02303_cast_nullable_to_custom_types.sql
index 1321053fa72..1a0d9a4c830 100644
--- a/tests/queries/0_stateless/02303_cast_nullable_to_custom_types.sql
+++ b/tests/queries/0_stateless/02303_cast_nullable_to_custom_types.sql
@@ -14,7 +14,10 @@ select CAST(number % 2 ? '0000:0000:0000:0000:0000:0000:0000:0000' : NULL, 'Null
 
 select toBool(number % 2 ? 'true' : NULL) from numbers(2);
 select toIPv4(number % 2 ? '0.0.0.0' : NULL) from numbers(2);
+select toIPv4OrDefault(number % 2 ? '' : NULL) from numbers(2);
+select toIPv4OrNull(number % 2 ? '' : NULL) from numbers(2);
 select IPv4StringToNum(number % 2 ? '0.0.0.0' : NULL) from numbers(2);
 select toIPv6(number % 2 ? '0000:0000:0000:0000:0000:0000:0000:0000' : NULL) from numbers(2);
+select toIPv6OrDefault(number % 2 ? '' : NULL) from numbers(2);
+select toIPv6OrNull(number % 2 ? '' : NULL) from numbers(2);
 select IPv6StringToNum(number % 2 ? '0000:0000:0000:0000:0000:0000:0000:0000' : NULL) from numbers(2);
-