dns.resolveAny

History

dns.resolveAny(hostname, callback): void

Attributes

hostname:string

callback:Function

err:Error

ret:Object[]

Uses the DNS protocol to resolve all records (also known as ANY or * query). The ret argument passed to the callback function will be an array containing various types of records. Each object has a property type that indicates the type of the current record. And depending on the type, additional properties will be present on the object:

Type	Properties
`'A'`	`address`/`ttl`
`'AAAA'`	`address`/`ttl`
`'CAA'`	Refer to `dns.resolveCaa()`
`'CNAME'`	`value`
`'MX'`	Refer to `dns.resolveMx()`
`'NAPTR'`	Refer to `dns.resolveNaptr()`
`'NS'`	`value`
`'PTR'`	`value`
`'SOA'`	Refer to `dns.resolveSoa()`
`'SRV'`	Refer to `dns.resolveSrv()`
`'TLSA'`	Refer to `dns.resolveTlsa()`
`'TXT'`	This type of record contains an array property called `entries` which refers to `dns.resolveTxt()`, e.g. `{ entries: ['...'], type: 'TXT' }`

Here is an example of the ret object passed to the callback:

[ { type: 'A', address: '127.0.0.1', ttl: 299 },
  { type: 'CNAME', value: 'example.com' },
  { type: 'MX', exchange: 'alt4.aspmx.l.example.com', priority: 50 },
  { type: 'NS', value: 'ns1.example.com' },
  { type: 'TXT', entries: [ 'v=spf1 include:_spf.example.com ~all' ] },
  { type: 'SOA',
    nsname: 'ns1.example.com',
    hostmaster: 'admin.example.com',
    serial: 156696742,
    refresh: 900,
    retry: 900,
    expire: 1800,
    minttl: 60 } ];

JavaScript

DNS server operators may choose not to respond to ANY queries. It may be better to call individual methods like dns.resolve4(), dns.resolveMx(), and so on. For more details, see RFC 8482.