| `'SOA'` | start of authority records | {Object} | [`dns.resolveSoa()`][] |

| `'SRV'` | service records | {Object} | [`dns.resolveSrv()`][] |

| `'TXT'` | text records | {string} | [`dns.resolveTxt()`][] |

| `'ANY'` | any records | {Object} | [`dns.resolveAny()`][] |

On error, `err` is an [`Error`][] object, where `err.code` is one of the

[DNS error codes](#dns_error_codes).

one record. Depending on the use case, these could be either joined together or

treated separately.

## dns.resolveAny(hostname, callback)

- `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` |

| `"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()`][] |

| `"TXT"` | This type of record contains an array property called `entries` which refers to [`dns.resolveTxt()`][], eg. `{ entries: ['...'], type: 'TXT' }` |

Here is a example of the `ret` object passed to the callback:

<!-- eslint-disable -->

```js

[ { 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: 'NS' },

{ 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 } ]

```

## dns.reverse(ip, callback)

<!-- YAML

added: v0.1.16

[`dns.resolveSoa()`]: #dns_dns_resolvesoa_hostname_callback

[`dns.resolveSrv()`]: #dns_dns_resolvesrv_hostname_callback

[`dns.resolveTxt()`]: #dns_dns_resolvetxt_hostname_callback

[`dns.resolveAny()`]: #dns_dns_resolveany_hostname_callback

[DNS error codes]: #dns_error_codes

[Implementation considerations section]: #dns_implementation_considerations

[supported `getaddrinfo` flags]: #dns_supported_getaddrinfo_flags