Checkout Field and Customer DNS Management

The Domain Selection checkout field

The Domain Selection field is a checkout element that gives customers a choice of how to get their site's domain. Add it to any checkout form to enable domain selling.

Adding the field to a checkout form

1. Go to Network Admin › Ultimate Multisite › Checkout Forms
2. Open or create a checkout form
3. In the checkout editor, click Add Field
4. Choose Domain Selection from the field list
5. Configure the field options (see below)
6. Save the form

Field options

Domain modes — Choose which tabs the customer sees. Each mode can be enabled or disabled independently:

Mode	What it does
Subdomain	Customer uses a free subdomain on your network (e.g., mysite.yournetwork.com). No payment needed.
Register New Domain	Customer searches for a new domain and registers it through your configured provider. Uses the matching domain product for pricing.
Existing Domain	Customer maps a domain they already own. No registration fee. The domain is mapped automatically to their site.

Default mode — When all three modes are enabled, which tab opens first. Set to Subdomain to keep domain registration optional, or Register New Domain to encourage purchases.

Domain product — Optionally pin this field to a specific domain product. If not set, the addon automatically selects the matching product based on the TLD the customer searches.

Registrant contact fields

When a customer selects the Register New Domain tab, the checkout form adds registrant contact fields inline:

• First name / Last name
• Email address
• Address (line 1, city, state/province, postal code, country)
• Phone number

These are required by all registrars and validated before the registration API call is made. Phone numbers are automatically formatted to the +CC.NNN international format expected by registrars.

Auto-generated site URL

When a customer registers or maps a domain, the site URL field is automatically populated from the chosen domain. Customers do not need to fill in a separate URL field.

Search behaviour

• Domain availability is checked in real-time with AJAX as the customer types
• Alternative TLD suggestions are shown when the preferred domain is unavailable
• Pricing is fetched live and displayed clearly (registration price, renewal price, optional WHOIS privacy fee)
• Coupon codes apply to domain products the same as any other product

Tuning search responsiveness:

// Increase debounce delay (milliseconds) to reduce API calls on slow connections
add_filter('wu_domain_seller_search_delay', function($delay) {
    return 800; // default: 500
});

Adding custom fields to the domain search form:

add_filter('wu_checkout_form_register_domain_form_fields', function($fields) {
    $fields['custom_note'] = [
        'type'  => 'text',
        'label' => 'Additional notes',
    ];
    return $fields;
});

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Customer DNS management

Customers can manage DNS records for their registered domains from the My Account page, under their domain's entry.

Supported record types

Type	Use
A	Map hostname to IPv4 address
AAAA	Map hostname to IPv6 address
CNAME	Create an alias pointing to another hostname
MX	Set mail exchange server
TXT	Add SPF, DMARC, verification, or other text records

Which providers support DNS management?

DNS management (add, edit, delete records) is available with OpenSRS, ResellerClub, and Enom. Namecheap, GoDaddy, and NameSilo domains display status and expiry information but DNS must be managed directly in the registrar's control panel.

Default DNS records

You can configure default DNS records that are applied automatically when a domain is registered. Go to Settings › Domain Seller › Default DNS Records.

Default record values support two tokens:

Token	Replaced with
{DOMAIN}	The registered domain name (e.g., example.com)
{SITE_URL}	The WordPress site URL for the customer's site

Example — point the apex domain and www to your server IP:

Type: A
Name: {DOMAIN}
Value: 203.0.113.10

Type: CNAME
Name: www.{DOMAIN}
Value: {DOMAIN}

Admin: viewing and editing DNS

Network admins can view and edit DNS records for any customer domain from the domain's edit page in Network Admin › Ultimate Multisite › Domains.