One of: “Primary” (the master, authority for the zone). “Secondary” (the slave, replicated from the primary). “External” (a cached zone that queries other nameservers). For more details about these zone types, consult the documentation for BIND, though note that hickory-dns supports only a subset of BIND’s zone types: https://bind9.readthedocs.io/en/v9_18_4/reference.html#type

"Primary"