A adds an A record To a domain. The name should be the relative label for the record. Use @ for the domain apex.
The address should be an ip address, either a string, or a numeric value obtained via IP.
Modifiers can be any number of record modifiers or JSON objects, which will be merged into the record's metadata.
D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
A("@", ""),
A("foo", ""),
A("test.foo", IP(""), TTL(5000)),
A("*", "", {foo: 42})