diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2999d3e82..e3724ddf0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@ v2.5.3 (FUTURE)
 
 ## Enhancements
 
+* [#1630](https://github.com/digitalocean/netbox/issues/1630) - Enable bulk editing of prefix/IP mask length
 * [#2693](https://github.com/digitalocean/netbox/issues/2693) - Additional cable colors
 * [#2726](https://github.com/digitalocean/netbox/issues/2726) - Include cables in global search
 
diff --git a/netbox/ipam/forms.py b/netbox/ipam/forms.py
index 570716532..b6209f5df 100644
--- a/netbox/ipam/forms.py
+++ b/netbox/ipam/forms.py
@@ -422,6 +422,11 @@ class PrefixBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldBulkEditF
         required=False,
         label='VRF'
     )
+    prefix_length = forms.IntegerField(
+        min_value=1,
+        max_value=127,
+        required=False
+    )
     tenant = forms.ModelChoiceField(
         queryset=Tenant.objects.all(),
         required=False
@@ -819,6 +824,11 @@ class IPAddressBulkEditForm(BootstrapMixin, AddRemoveTagsForm, CustomFieldBulkEd
         required=False,
         label='VRF'
     )
+    mask_length = forms.IntegerField(
+        min_value=1,
+        max_value=128,
+        required=False
+    )
     tenant = forms.ModelChoiceField(
         queryset=Tenant.objects.all(),
         required=False
diff --git a/netbox/ipam/models.py b/netbox/ipam/models.py
index 789e65b82..6f7a21236 100644
--- a/netbox/ipam/models.py
+++ b/netbox/ipam/models.py
@@ -385,6 +385,15 @@ class Prefix(ChangeLoggedModel, CustomFieldModel):
             self.description,
         )
 
+    def _set_prefix_length(self, value):
+        """
+        Expose the IPNetwork object's prefixlen attribute on the parent model so that it can be manipulated directly,
+        e.g. for bulk editing.
+        """
+        if self.prefix is not None:
+            self.prefix.prefixlen = value
+    prefix_length = property(fset=_set_prefix_length)
+
     def get_status_class(self):
         return STATUS_CHOICE_CLASSES[self.status]
 
@@ -630,6 +639,15 @@ class IPAddress(ChangeLoggedModel, CustomFieldModel):
             self.description,
         )
 
+    def _set_mask_length(self, value):
+        """
+        Expose the IPNetwork object's prefixlen attribute on the parent model so that it can be manipulated directly,
+        e.g. for bulk editing.
+        """
+        if self.address is not None:
+            self.address.prefixlen = value
+    mask_length = property(fset=_set_mask_length)
+
     @property
     def device(self):
         if self.interface: