Update your naked domain configuration to avoid service disruption

To avoid service disruption during the Salesforce Edge Network migration, choose one of the following three options. Option 1 is strongly recommended. Update your configuration before the deadline specified in your outreach case.

Option 1 (Recommended): Add ANAME, ALIAS, or CNAME-Flattening for Your Domain

Work with your DNS vendor to update your naked domain to use ANAME, ALIAS, or CNAME-flattening instead of a direct IP address (A record). This resolves your domain to a Fully Qualified Domain Name (FQDN) — a complete hostname that identifies your Salesforce org's Edge Network endpoint — rather than a fixed IP address that can change.
To find your CNAME target hostname:

1. Log in to your Salesforce org.
2. Click Setup in the upper right corner of the page.
3. In the left navigation, search for Domain Management or navigate to it directly.
4. Under Domain Management, go to Domains and click Edit for the domain you want to migrate to the Edge Network.
5. Locate the CNAME target hostname for your domain. The hostname follows this format: the domain name, followed by a dot, followed by the 18-character Salesforce org ID, followed by .live.salesforce.com. For example, if your domain is example.com and your org ID is 00D000000000001AAA, your CNAME target is example.com.00D000000000001AAA.live.salesforce.com.
6. Provide this hostname to your DNS vendor and ask them to configure your naked domain using ANAME, ALIAS, or CNAME-flattening to point to it.

Option 2: Switch to a DNS Vendor That Supports ANAME, ALIAS, or CNAME-Flattening

If your current DNS vendor only supports A records for naked domains and cannot configure ANAME, ALIAS, or CNAME-flattening, consider migrating to a DNS vendor that supports these record types. Once you have switched DNS vendors, follow the steps in Option 1 to configure the CNAME target.

Option 3 (Not Recommended): Update the IP Addresses in Your Domain A Record

If you are unable to implement Option 1 or Option 2 before the deadline, you can temporarily update the IP addresses in your A record to the new Salesforce Edge Network IP addresses. Contact Salesforce Support to obtain the new IP addresses.

Steps to update and validate:

1. Contact Salesforce Support to request the new Edge Network IP addresses for your region.
2. Log in to your DNS vendor's control panel and update your naked domain A record to remove the existing IP addresses and add the new ones provided by Support.
3. After updating, validate your configuration by opening a browser and navigating to your domain followed by /smth.jsp (for example, `<REDACTED>).
4. Open your browser's developer tools and inspect the HTTP response headers. If the header named X-Salesforce-VIP has the value EDGE, your domain is successfully routing through the Salesforce Edge Network.

Why Option 3 is not recommended:

• The IP addresses assigned to the Salesforce Edge Network can change as frequently as every 6 months. Each time the IP addresses change, you must manually update your A record to avoid another service disruption.
• Using an A record bypasses the full Salesforce Edge Network routing capability, which means your custom domain will have subpar performance compared to customers using CNAME-flattening.