A multiple-domain SSL certificate provides secured communications for multiple domains and multiple host names operating on different IP addresses

Comodo PositiveSSL Multi-Domain $39.88/yr

PositiveSSL Multi-Domain certs allow enterprises and web hosts to secure multiple websites by including up to 100 domains within a single certificate. Enterprises can consolidate all their secure domains into a single cert. For example: secure.mydomain.com, secure.mydomain.co.uk and secure.mydomain.net. This certificate can be issued in 15 minutes or less. Domain Validation, Medium Assurance, 15-Day Refund, No Pape

Comodo Multi-Domain SSL $99.88/y

Comodo's multi-domain certificate is perfect for organizations with multiple unique domains hosted on a single server. This organization-validated SSL secures up to 100 domains – saving you time and money while providing a high level of trust and security. Organization Validation, High Assurance, 15-Day Refund, Unlimited Server Licences

Comodo EV Multi-Domain SSL $257.88/yr

This SSL cert brings you improved sales conversion by showing your customers the familiar green address bar. The green bar, exclusive to EV SSL certs, tells your customers they're shopping on an extremely secure website. EV Multi-Domain lets you to secure up to 100 domains or subdomains with a single certificate. Extended Validation, $1,750,000 Warranty, 15-Day Refund, Unlimited Server Licences

Thawte SSL Web Server with EV $173.88/yr

No one else offers complete extended validation, green bar assurance, a premium $1,500,000 warranty, support for multiple domains and Server Gated Cryptography for a price this low. Grow your customer base and your competitive edge with Thawte's SSL Web Server with EV certificate. Extended Validation, $1,500,000 Warranty, 15-Day Refund, Green Bar in Browsers