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20 minutes ago a user-agent with 66.116.153.122 IP address has visited my web site. It's domain is rev.opentransfer.com.122.153.116.66.in-addr.arpa. User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.2.11) Gecko/20101012 AskTbSPC2/3.8.0.12304 Firefox/3.6.11. Language: en-us,en;q=0.5,de-de,de;q=0.8. Compression: gzip,deflate. Oh, and my domain name ends with .name. Why ARPA has visited me?

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Why does it matter? –  John Conde Nov 21 '11 at 15:58
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Don't you know for what is used arpa? –  ilhan Nov 21 '11 at 16:10

1 Answer 1

up vote 10 down vote accepted

It's not ARPA (Advanced Research Project Agency). That's just DNS at work. Here is a write-up on The in-addr.arpa Domain.

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