function resolveSoa
#resolveSoa(hostname: string): Promise<SoaRecord>Uses the DNS protocol to resolve a start of authority record (SOA record) for
the hostname. On success, the Promise is resolved with an object with the
following properties:
- nsname
- hostmaster
- serial
- refresh
- retry
- expire
- minttl
{
  nsname: 'ns.example.com',
  hostmaster: 'root.example.com',
  serial: 2013101809,
  refresh: 10000,
  retry: 2400,
  expire: 604800,
  minttl: 3600
}
Parameters #
#hostname: string Return Type #
Promise<SoaRecord>