diff --git a/docs/data-sources/prefix.md b/docs/data-sources/prefix.md
index 7971f6d9..a8a07f01 100644
--- a/docs/data-sources/prefix.md
+++ b/docs/data-sources/prefix.md
@@ -17,20 +17,20 @@ description: |-
 
 ### Optional
 
-- `cidr` (String, Deprecated) At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given. Conflicts with `prefix`.
+- `cidr` (String, Deprecated) Conflicts with `prefix`.
 - `custom_fields` (Map of String)
-- `description` (String) Description to include in the data source filter. At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given.
-- `family` (Number) The IP family of the prefix. One of 4 or 6. At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given.
-- `prefix` (String) At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given. Conflicts with `cidr`.
-- `role_id` (Number) At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given.
-- `site_id` (Number) At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given.
-- `tag` (String) Tag to include in the data source filter (must match the tag's slug). At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given.
+- `description` (String) Description to include in the data source filter.
+- `family` (Number) The IP family of the prefix. One of 4 or 6.
+- `prefix` (String) At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr`, `custom_fields` or `tag` must be given. Conflicts with `cidr`.
+- `role_id` (Number)
+- `site_id` (Number)
+- `tag` (String) Tag to include in the data source filter (must match the tag's slug).
 - `tag__n` (String) Tag to exclude from the data source filter (must match the tag's slug).
 Refer to [Netbox's documentation](https://demo.netbox.dev/static/docs/rest-api/filtering/#lookup-expressions)
 for more information on available lookup expressions.
-- `vlan_id` (Number) At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given.
-- `vlan_vid` (Number) At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given.
-- `vrf_id` (Number) At least one of `description`, `family`, `prefix`, `vlan_vid`, `vrf_id`, `vlan_id`, `site_id`, `role_id`, `cidr` or `tag` must be given.
+- `vlan_id` (Number)
+- `vlan_vid` (Number)
+- `vrf_id` (Number)
 
 ### Read-Only
 
diff --git a/netbox/custom_fields.go b/netbox/custom_fields.go
index ad35c37d..47750db7 100644
--- a/netbox/custom_fields.go
+++ b/netbox/custom_fields.go
@@ -1,6 +1,12 @@
 package netbox
 
 import (
+	"fmt"
+	"net/url"
+
+	"github.com/go-openapi/runtime"
+	"github.com/go-openapi/strfmt"
+
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
 )
 
@@ -23,3 +29,37 @@ func getCustomFields(cf interface{}) map[string]interface{} {
 	}
 	return cfm
 }
+
+type CustomFieldParams struct {
+	params runtime.ClientRequestWriter
+	cfm    map[string]interface{}
+}
+
+func (o *CustomFieldParams) WriteToRequest(r runtime.ClientRequest, reg strfmt.Registry) error {
+	if err := o.params.WriteToRequest(r, reg); err != nil {
+		return err
+	}
+
+	for k, v := range o.cfm {
+		if vs, ok := v.(string); ok {
+			if err := r.SetQueryParam(fmt.Sprintf("cf_%s", url.QueryEscape(k)), vs); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+
+func WithCustomFieldParamsOption(cfm map[string]interface{}) func(*runtime.ClientOperation) {
+	if cfm == nil {
+		cfm = make(map[string]interface{})
+	}
+
+	return func(co *runtime.ClientOperation) {
+		co.Params = &CustomFieldParams{
+			params: co.Params,
+			cfm:    cfm,
+		}
+	}
+}
diff --git a/netbox/data_source_netbox_prefix.go b/netbox/data_source_netbox_prefix.go
index be311e5c..daa4c521 100644
--- a/netbox/data_source_netbox_prefix.go
+++ b/netbox/data_source_netbox_prefix.go
@@ -25,63 +25,54 @@ func dataSourceNetboxPrefix() *schema.Resource {
 				Deprecated:    "The `cidr` parameter is deprecated in favor of the canonical `prefix` attribute.",
 				ConflictsWith: []string{"prefix"},
 				ValidateFunc:  validation.IsCIDR,
-				AtLeastOneOf:  []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
 			},
 			customFieldsKey: customFieldsSchema,
 			"description": {
-				Type:         schema.TypeString,
-				Optional:     true,
-				Computed:     true,
-				AtLeastOneOf: []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
-				Description:  "Description to include in the data source filter.",
+				Type:        schema.TypeString,
+				Optional:    true,
+				Computed:    true,
+				Description: "Description to include in the data source filter.",
 			},
 			"family": {
 				Type:         schema.TypeInt,
 				Optional:     true,
 				Computed:     true,
-				AtLeastOneOf: []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
 				ValidateFunc: validation.IntInSlice([]int{4, 6}),
 				Description:  "The IP family of the prefix. One of 4 or 6",
 			},
 			"role_id": {
-				Type:         schema.TypeInt,
-				Optional:     true,
-				Computed:     true,
-				AtLeastOneOf: []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
+				Type:     schema.TypeInt,
+				Optional: true,
+				Computed: true,
 			},
 			"prefix": {
 				Type:          schema.TypeString,
 				Optional:      true,
 				ValidateFunc:  validation.IsCIDR,
 				ConflictsWith: []string{"cidr"},
-				AtLeastOneOf:  []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
+				AtLeastOneOf:  []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "custom_fields", "tag"},
 			},
 			"vlan_vid": {
 				Type:         schema.TypeFloat,
 				Optional:     true,
-				AtLeastOneOf: []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
 				ValidateFunc: validation.FloatBetween(1, 4094),
 			},
 			"vrf_id": {
-				Type:         schema.TypeInt,
-				Optional:     true,
-				AtLeastOneOf: []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
+				Type:     schema.TypeInt,
+				Optional: true,
 			},
 			"vlan_id": {
-				Type:         schema.TypeInt,
-				Optional:     true,
-				AtLeastOneOf: []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
+				Type:     schema.TypeInt,
+				Optional: true,
 			},
 			"site_id": {
-				Type:         schema.TypeInt,
-				Optional:     true,
-				AtLeastOneOf: []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
+				Type:     schema.TypeInt,
+				Optional: true,
 			},
 			"tag": {
-				Type:         schema.TypeString,
-				Optional:     true,
-				AtLeastOneOf: []string{"description", "family", "prefix", "vlan_vid", "vrf_id", "vlan_id", "site_id", "role_id", "cidr", "tag"},
-				Description:  "Tag to include in the data source filter (must match the tag's slug).",
+				Type:        schema.TypeString,
+				Optional:    true,
+				Description: "Tag to include in the data source filter (must match the tag's slug).",
 			},
 			"tag__n": {
 				Type:     schema.TypeString,
@@ -103,6 +94,7 @@ func dataSourceNetboxPrefixRead(d *schema.ResourceData, m interface{}) error {
 	api := m.(*client.NetBoxAPI)
 
 	params := ipam.NewIpamPrefixesListParams()
+	var opts []ipam.ClientOption
 
 	limit := int64(2) // Limit of 2 is enough
 	params.Limit = &limit
@@ -155,7 +147,11 @@ func dataSourceNetboxPrefixRead(d *schema.ResourceData, m interface{}) error {
 		params.Tagn = &tagn
 	}
 
-	res, err := api.Ipam.IpamPrefixesList(params, nil)
+	if cfm, ok := d.Get(customFieldsKey).(map[string]interface{}); ok {
+		opts = append(opts, WithCustomFieldParamsOption(cfm))
+	}
+
+	res, err := api.Ipam.IpamPrefixesList(params, nil, opts...)
 	if err != nil {
 		return err
 	}
diff --git a/netbox/data_source_netbox_prefix_test.go b/netbox/data_source_netbox_prefix_test.go
index 520dcdd3..c736ed2e 100644
--- a/netbox/data_source_netbox_prefix_test.go
+++ b/netbox/data_source_netbox_prefix_test.go
@@ -147,7 +147,9 @@ resource "netbox_prefix" "test" {
 
 data "netbox_prefix" "test_output" {
   depends_on = [netbox_prefix.test]
-  prefix = "%[2]s"
+  custom_fields = {
+    "${netbox_custom_field.test.name}" = "test value"
+  }
 }`, testField, testPrefix),
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestCheckResourceAttr("data.netbox_prefix.test_output", "status", "active"),