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Content restriction compliance using reverse DNS lookup

  • US 9,374,352 B2
  • Filed: 05/13/2013
  • Issued: 06/21/2016
  • Est. Priority Date: 12/21/2007
  • Status: Active Grant
First Claim
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1. A method for conditionally providing content over a computer network, comprising:

  • in response to receiving a content request from a client, determining an IP address for the client at a host server;

    providing a query from the host server to a reverse DNS lookup server seeking information from a DNS zone file, the query comprising the IP address;

    permitting the content to be transmitted to the client only if the information from the DNS zone file indicates that the client is not ineligible to receive the content; and

    if the information from the DNS zone file does not indicate that the client is not ineligible to receive the content, causing a message to be transmitted to the client, wherein the message includes a request for the client to provide personal authentication information prior to permitting the content to be transmitted.

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