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@ -41,7 +41,8 @@ necessarily the value initially passed to `lookup`). |
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Resolves a domain (e.g. `'google.com'`) into an array of the record types |
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specified by rrtype. Valid rrtypes are `A` (IPV4 addresses), `AAAA` (IPV6 |
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addresses), `MX` (mail exchange records), `TXT` (text records), `SRV` (SRV |
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records), and `PTR` (used for reverse IP lookups). |
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records), `PTR` (used for reverse IP lookups), `NS` (name server records) |
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and `CNAME` (canonical name records). |
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The callback has arguments `(err, addresses)`. The type of each item |
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in `addresses` is determined by the record type, and described in the |
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@ -89,6 +90,18 @@ Reverse resolves an ip address to an array of domain names. |
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The callback has arguments `(err, domains)`. |
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### dns.resolveNs(domain, callback) |
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The same as `dns.resolve()`, but only for name server records (`NS` records). |
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`addresses` is an array of the name server records available for `domain` |
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(e.g., `['ns1.example.com', 'ns2.example.com']`). |
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### dns.resolveCname(domain, callback) |
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The same as `dns.resolve()`, but only for canonical name records (`CNAME` |
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records). `addresses` is an array of the canonical name records available for |
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`domain` (e.g., `['bar.example.com']`). |
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If there an an error, `err` will be non-null and an instanceof the Error |
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object. |
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