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Updated README.md
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README.md

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docs/README.md

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@@ -181,15 +181,15 @@ provides two well known and easy to parse output formats: CSV and JSON. Use it
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for convenient data interchange.
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```
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$ dnstwist --format csv domain.name > out.csv
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$ dnstwist --format json domain.name > out.json
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$ dnstwist --format csv domain.name | column -t -s,
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$ dnstwist --format json domain.name | jq
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```
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In case you want to chain `dnstwist` with other tools and you need only domain
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variants without performing any DNS lookups, you can use `--format idle`:
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permutations without making any DNS lookups, you can use `--format idle`:
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```
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$ dnstwist --format idle domain.name | tr '\n' ','
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$ dnstwist --format idle domain.name
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```
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The tool can perform real-time lookups to return geographical location of IPv4
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Along with the length of the domain, the number of variants generated by the
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algorithms increases considerably, and therefore the number of DNS queries
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needed to verify them. For example, to check all variants for google.com, you
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would have to send over 300k queries. For the domain facebook.com the number
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increases to over 5 million. How easy it is to guess it takes a lot of
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resources and most importantly even more time. For longer domains checking all
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is simply not feasible.
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needed to verify them. It's mathematically impossible to check all domain
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permutations - especially for longer input domains.
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For this reason, this tool generates and checks domains very close to the
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original one. Theoretically, these are the most attractive domains from the
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attacker's point of view. However, be aware that the imagination of the

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