What is "opennic"

OpenNIC is an alternative network information center/ alternative DNS root which lists itself as an alternative to ICANN and its registries.

users of the OpenNIC DNS servers are able to resolve all existing ICANN top-level domains as well as their own.

Like all alternative root DNS systems, OpenNIC-hosted domains are unreachable to the vast majority of the Internet. Only specific configuration in one's DNS resolver makes these reachable, and very few Internet service providers have this configuration.