diff --git a/awslimitchecker/services/vpc.py b/awslimitchecker/services/vpc.py
index 83feb37b..0080fe5b 100644
--- a/awslimitchecker/services/vpc.py
+++ b/awslimitchecker/services/vpc.py
@@ -114,8 +114,21 @@ def _find_usage_ACLs(self):
         )['NetworkAcls']:
             acls[acl['VpcId']] += 1
             # Rules per network ACL
+            egress_ipv4 = sum(map(
+                lambda x: x["Egress"] and "CidrBlock" in x, acl['Entries']
+            ))
+            ingress_ipv4 = sum(map(
+                lambda x: not x["Egress"] and "CidrBlock" in x, acl['Entries']
+            ))
+            egress_ipv6 = sum(map(
+                lambda x: x["Egress"] and "Ipv6CidrBlock" in x, acl['Entries']
+            ))
+            ingress_ipv6 = sum(map(
+                lambda x: not x["Egress"] and "Ipv6CidrBlock" in x,
+                acl['Entries']
+            ))
             self.limits['Rules per network ACL']._add_current_usage(
-                len(acl['Entries']),
+                max(egress_ipv4, ingress_ipv4, egress_ipv6, ingress_ipv6),
                 aws_type='AWS::EC2::NetworkAcl',
                 resource_id=acl['NetworkAclId']
             )
diff --git a/awslimitchecker/tests/services/result_fixtures.py b/awslimitchecker/tests/services/result_fixtures.py
index 4c7324e2..fe3e1285 100644
--- a/awslimitchecker/tests/services/result_fixtures.py
+++ b/awslimitchecker/tests/services/result_fixtures.py
@@ -371,12 +371,72 @@ class VPC(object):
             {
                 'NetworkAclId': 'acl-2',
                 'VpcId': 'vpc-1',
-                'Entries': [1],
+                'Entries': [
+                    {
+                        'Egress': True,
+                        'CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': True,
+                        'Ipv6CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': False,
+                        'CidrBlock': 'string'
+                    },
+                ],
             },
             {
                 'NetworkAclId': 'acl-3',
                 'VpcId': 'vpc-2',
-                'Entries': [1, 2, 3, 4, 5],
+                'Entries': [
+                    {
+                        'Egress': True,
+                        'Ipv6CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': False,
+                        'CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': True,
+                        'Ipv6CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': True,
+                        'Ipv6CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': True,
+                        'Ipv6CidrBlock': 'string'
+                    }
+                ],
+            },
+            {
+                'NetworkAclId': 'acl-4',
+                'VpcId': 'vpc-1',
+                'Entries': [
+                    {
+                        'Egress': False,
+                        'Ipv6CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': False,
+                        'CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': False,
+                        'Ipv6CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': True,
+                        'Ipv6CidrBlock': 'string'
+                    },
+                    {
+                        'Egress': False,
+                        'Ipv6CidrBlock': 'string'
+                    }
+                ],
             },
         ]
     }
diff --git a/awslimitchecker/tests/services/test_vpc.py b/awslimitchecker/tests/services/test_vpc.py
index e968935a..60003ace 100644
--- a/awslimitchecker/tests/services/test_vpc.py
+++ b/awslimitchecker/tests/services/test_vpc.py
@@ -198,17 +198,19 @@ def test_find_usage_acls(self):
         assert len(usage) == 2
         assert usage[0].get_value() == 1
         assert usage[0].resource_id == 'vpc-2'
-        assert usage[1].get_value() == 2
+        assert usage[1].get_value() == 3
         assert usage[1].resource_id == 'vpc-1'
         entries = sorted(cls.limits['Rules per network '
                                     'ACL'].get_current_usage())
-        assert len(entries) == 3
+        assert len(entries) == 4
         assert entries[0].resource_id == 'acl-2'
         assert entries[0].get_value() == 1
         assert entries[1].resource_id == 'acl-1'
-        assert entries[1].get_value() == 3
-        assert entries[2].resource_id == 'acl-3'
-        assert entries[2].get_value() == 5
+        assert entries[1].get_value() == 2
+        assert entries[2].resource_id == 'acl-4'
+        assert entries[2].get_value() == 3
+        assert entries[3].resource_id == 'acl-3'
+        assert entries[3].get_value() == 4
         assert mock_conn.mock_calls == [
             call.describe_network_acls(Filters=[{
                 'Name': 'owner-id', 'Values': ['0123456789']