---
schema_version: "1"
id: 66bfd32c4077a57fe63841f8a67d71d5157e959633cd077927efcfbb8e70a78f
title: Simplify Testing with a Default Domain (Generally Available)
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/release-notes/260-0-0/rn_comm_b2c_default_domain.md
canonical_url: https://help.salesforce.com/s/articleView?id=release-notes.rn_comm_b2c_default_domain.htm&release=260&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 6b1e7b8568ec73e062b2e11dc9cc2a16ed2142dd6d6f8d3509a5ed805022ddb1
description: Accelerate time to market by using a preconfigured, Salesforce-managed default hostname for testing in development, staging, and production environments. The default domain, which is provisioned when you create a realm, has embedded CDN capabilities, eliminating the need to manually configure DNS settings. To maintain security, development and staging instances require user credentials. Production instances have a Block All firewall rule applied by default. Configure Allow rules to grant access.
products:
  - Cross Cloud Packages Solutions
release: "260"
---
# Simplify Testing with a Default Domain (Generally Available)

Accelerate time to market by using a preconfigured, Salesforce-managed default hostname for testing in development, staging, and production environments. The default domain, which is provisioned when you create a realm, has embedded CDN capabilities, eliminating the need to manually configure DNS settings. To maintain security, development and staging instances require user credentials. Production instances have a Block All firewall rule applied by default. Configure Allow rules to grant access.

![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-salesforce_release_notes-260-0-0-production-enus/ba62a63b-6cd1-440e-8d24-e867afab0363/images/icon_note.png)

Note If you don’t have a vanity domain configured for your Production instance, the Block All rule causes issues with Page Designer and Preview functions. To ensure these functions work as expected, configure a vanity hostname or create a custom firewall rule to allow specific IPs or User Agents in the Default zone.

**Where:** This change applies to B2C Commerce.

**When:** This feature, originally scheduled for 26.3, is now scheduled for release in all realms by May 29, 2026.

**How:** By default, eCommerce, Business Manager, Storefront, Preview, and Toolkit traffic routes to the default domain. To override this routing, configure a vanity hostname in your aliases file (**Merchant Tools** | **SEO & Discoverability** | **Aliases**). A vanity domain defined in the aliases file is prioritized, with the default domain used as a fallback only when no vanity hostname is configured.

#### See Also

- [_Salesforce Help_: Default Domain Support for B2C Commerce](https://help.salesforce.com/s/articleView?id=cc.b2c_default_domain.htm&language=en_US)
- [_Salesforce Help_: Hostname Aliases](https://help.salesforce.com/s/articleView?id=cc.b2c_hostname_aliases.htm&language=en_US)
- [_Known Issue_: B2C Commerce Default Domain Hostname Incorrectly Takes Precedence as Default Preview URL Hostname](https://help.salesforce.com/s/issue?id=a02Ka00000mnCET)