page_title: Wildcard certificate
hierarchical_section_title: Wildcard certificate
caption_attribution_description: English: This image shows what makes an ssl certificate multi domain, thus a unified communication certificate (UCC). It's shows the Subject Alternative Name (SAN) field containing multiple domains. In addition, it shows that an Extended Validation (EV) SSL Certificate can also be UCC.
context_page_description: In computer networking, a wildcard certificate is a public key certificate which can be used with multiple sub-domains of a domain. The principal use is for securing web sites with HTTPS, but there are also applications in many other fields. Compared with conventional certificates, a wildcard certificate can be cheaper and more convenient than a certificate for each sub-domain. Multi-domain wildcard certificates further simplify the complexity and reduce costs by securing multiple domain and their sub-domains.
context_section_description: In computer networking, a wildcard certificate is a public key certificate which can be used with multiple sub-domains of a domain. The principal use is for securing web sites with HTTPS, but there are also applications in many other fields.  Compared with conventional certificates, a wildcard certificate can be cheaper and more convenient than a certificate for each sub-domain. Multi-domain wildcard certificates further simplify the complexity and reduce costs by securing multiple domain and their sub-domains.
caption: An example of an EV certificate acting as a wildcard certificate (note the Subject Alternative Name (SAN) field)
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