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Support for IPv6

SSL.com can issue Domain Validated (DV) and Organization Validated (OV) digital certificates to public IPv6 addresses.

Internet Protocol version 6 (IPv6) has similar functions to its predecessor because it also gives Internet-enabled devices the unique IP addresses that allow them to communicate. The advantages to IPv6 include enhanced multicast routing, autoconfiguration, and removal of Network Address Translation (NAT).

Another thing that makes IPv6 more advantageous is that it solves address exhaustion that IPv4 has long experienced. Address exhaustion is the depletion of the pool of unallocated IP addresses. IPv6 also provides advantages to telecommunications companies and internet service providers in terms of quality of service (QoS) and enhanced security. 

Below are three key parameters regarding our certificate issuance for IPv6 addresses.

  • An IPv6 address cannot be used with our wildcard certificates.
  • We are not allowed to issue certificates for private IPv6 addresses.
  • Our multi-domain cert building tool now accepts IPv6.

The following are the rules to be followed when applying for DV certificates for an IPv6 address:

  • If a domain name is included along with IPv6 address, it will be added in the common name field.
  • If the certificate includes both IPv4 and IPv6, the IPv4 will be inserted into the common name field.

Note that modern Browsers use the data included in the SubjectAltName extension of the Certificate instead of the common name.

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