diff --git a/netbox/circuits/migrations/0001_squashed.py b/netbox/circuits/migrations/0001_squashed.py
index 656eb35a1..96fa3c086 100644
--- a/netbox/circuits/migrations/0001_squashed.py
+++ b/netbox/circuits/migrations/0001_squashed.py
@@ -1,4 +1,4 @@
-import dcim.fields
+import ipam.fields
 from utilities.json import CustomFieldJSONEncoder
 from django.db import migrations, models
 import django.db.models.deletion
@@ -77,7 +77,7 @@ class Migration(migrations.Migration):
                 ('id', models.BigAutoField(primary_key=True, serialize=False)),
                 ('name', models.CharField(max_length=100, unique=True)),
                 ('slug', models.SlugField(max_length=100, unique=True)),
-                ('asn', dcim.fields.ASNField(blank=True, null=True)),
+                ('asn', ipam.fields.ASNField(blank=True, null=True)),
                 ('account', models.CharField(blank=True, max_length=30)),
                 ('portal_url', models.URLField(blank=True)),
                 ('noc_contact', models.TextField(blank=True)),
diff --git a/netbox/dcim/fields.py b/netbox/dcim/fields.py
index 4a2755be9..cef3283bb 100644
--- a/netbox/dcim/fields.py
+++ b/netbox/dcim/fields.py
@@ -1,10 +1,8 @@
 from django.contrib.postgres.fields import ArrayField
 from django.core.exceptions import ValidationError
-from django.core.validators import MinValueValidator, MaxValueValidator
 from django.db import models
 from netaddr import AddrFormatError, EUI, eui64_unix_expanded, mac_unix_expanded
 
-from ipam.constants import BGP_ASN_MAX, BGP_ASN_MIN
 from .lookups import PathContains
 
 __all__ = (
@@ -27,22 +25,6 @@ class eui64_unix_expanded_uppercase(eui64_unix_expanded):
 # Fields
 #
 
-class ASNField(models.BigIntegerField):
-    description = "32-bit ASN field"
-    default_validators = [
-        MinValueValidator(BGP_ASN_MIN),
-        MaxValueValidator(BGP_ASN_MAX),
-    ]
-
-    def formfield(self, **kwargs):
-        defaults = {
-            'min_value': BGP_ASN_MIN,
-            'max_value': BGP_ASN_MAX,
-        }
-        defaults.update(**kwargs)
-        return super().formfield(**defaults)
-
-
 class MACAddressField(models.Field):
     description = "PostgreSQL MAC Address field"
 
diff --git a/netbox/dcim/migrations/0001_squashed.py b/netbox/dcim/migrations/0001_squashed.py
index 3d7156e17..cf0ef4816 100644
--- a/netbox/dcim/migrations/0001_squashed.py
+++ b/netbox/dcim/migrations/0001_squashed.py
@@ -1,4 +1,5 @@
 import dcim.fields
+import ipam.fields
 import django.contrib.postgres.fields
 from utilities.json import CustomFieldJSONEncoder
 import django.core.validators
@@ -609,7 +610,7 @@ class Migration(migrations.Migration):
                 ('slug', models.SlugField(max_length=100, unique=True)),
                 ('status', models.CharField(default='active', max_length=50)),
                 ('facility', models.CharField(blank=True, max_length=50)),
-                ('asn', dcim.fields.ASNField(blank=True, null=True)),
+                ('asn', ipam.fields.ASNField(blank=True, null=True)),
                 ('time_zone', timezone_field.fields.TimeZoneField(blank=True)),
                 ('description', models.CharField(blank=True, max_length=200)),
                 ('physical_address', models.CharField(blank=True, max_length=200)),
diff --git a/netbox/ipam/constants.py b/netbox/ipam/constants.py
index cb121515d..f26fce2b5 100644
--- a/netbox/ipam/constants.py
+++ b/netbox/ipam/constants.py
@@ -2,10 +2,6 @@ from django.db.models import Q
 
 from .choices import FHRPGroupProtocolChoices, IPAddressRoleChoices
 
-# BGP ASN bounds
-BGP_ASN_MIN = 1
-BGP_ASN_MAX = 2**32 - 1
-
 
 #
 # VRFs
diff --git a/netbox/ipam/fields.py b/netbox/ipam/fields.py
index 7d28127a4..2d55deae4 100644
--- a/netbox/ipam/fields.py
+++ b/netbox/ipam/fields.py
@@ -1,10 +1,21 @@
 from django.core.exceptions import ValidationError
+from django.core.validators import MinValueValidator, MaxValueValidator
 from django.db import models
 from netaddr import AddrFormatError, IPNetwork
 
 from . import lookups, validators
 from .formfields import IPNetworkFormField
 
+__all__ = (
+    'ASNField',
+    'IPAddressField',
+    'IPNetworkField',
+)
+
+# BGP ASN bounds
+BGP_ASN_MIN = 1
+BGP_ASN_MAX = 2**32 - 1
+
 
 class BaseIPField(models.Field):
 
@@ -93,3 +104,19 @@ IPAddressField.register_lookup(lookups.NetIn)
 IPAddressField.register_lookup(lookups.NetHostContained)
 IPAddressField.register_lookup(lookups.NetFamily)
 IPAddressField.register_lookup(lookups.NetMaskLength)
+
+
+class ASNField(models.BigIntegerField):
+    description = "32-bit ASN field"
+    default_validators = [
+        MinValueValidator(BGP_ASN_MIN),
+        MaxValueValidator(BGP_ASN_MAX),
+    ]
+
+    def formfield(self, **kwargs):
+        defaults = {
+            'min_value': BGP_ASN_MIN,
+            'max_value': BGP_ASN_MAX,
+        }
+        defaults.update(**kwargs)
+        return super().formfield(**defaults)
diff --git a/netbox/ipam/migrations/0053_asn_model.py b/netbox/ipam/migrations/0053_asn_model.py
index 3b074634c..99bde12e6 100644
--- a/netbox/ipam/migrations/0053_asn_model.py
+++ b/netbox/ipam/migrations/0053_asn_model.py
@@ -1,6 +1,4 @@
-# Generated by Django 3.2.8 on 2021-11-02 16:16
-
-import dcim.fields
+import ipam.fields
 from utilities.json import CustomFieldJSONEncoder
 from django.db import migrations, models
 import django.db.models.deletion
@@ -23,7 +21,7 @@ class Migration(migrations.Migration):
                 ('last_updated', models.DateTimeField(auto_now=True, null=True)),
                 ('custom_field_data', models.JSONField(blank=True, default=dict, encoder=CustomFieldJSONEncoder)),
                 ('id', models.BigAutoField(primary_key=True, serialize=False)),
-                ('asn', dcim.fields.ASNField(unique=True)),
+                ('asn', ipam.fields.ASNField(unique=True)),
                 ('description', models.CharField(blank=True, max_length=200)),
                 ('rir', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='asns', to='ipam.rir')),
                 ('tags', taggit.managers.TaggableManager(through='extras.TaggedItem', to='extras.Tag')),
diff --git a/netbox/ipam/models/asns.py b/netbox/ipam/models/asns.py
index 3d8a8e3f7..c4b7c022f 100644
--- a/netbox/ipam/models/asns.py
+++ b/netbox/ipam/models/asns.py
@@ -1,8 +1,9 @@
+from django.contrib.postgres.fields import ArrayField
 from django.db import models
 from django.urls import reverse
 from django.utils.translation import gettext as _
 
-from dcim.fields import ASNField
+from ipam.fields import ASNField
 from netbox.models import PrimaryModel
 
 __all__ = (