Nexcess Knowledge Base

The DUNS Number definition comes from the Data Universal Numbering System (abbreviated as "DUNS" or "D-U-N-S") and is a proprietary system from Dun & Bradstreet that assigns a unique nine-digit numeric identifier to a business, which may be issued to any business worldwide.

Standing for server name indication, SNI is an TLS protocol extension that allows a server to connect multiple SSL certificates a single IP address.

Brazilian Domain: Learn how to register your Brazilian Domain (.COM.BR) with OpenSRS. Understand the domain registration process and country requirements.

A WHOIS record stores pertinent information about a domain name, its registrant, and its registrar.

Basic settings for use with IMAP and POP email clients and links to detailed instructions for many popular choices.

How to use SiteWorx to modify or create a DNS SPF record for the domain attached to your Nexcess account.

Overview of DNS propagation and how to use the Nexcess Global DNS checker to verify propagation of your recently migrated site.