Hi, I have been using Resolv.getname to verify that a callback has come from our secure payments processor. If I do: nslookup 155.136.68.24 I get: Non-authoritative answer: 24.68.136.155.in-addr.arpa name = wcc2.worldpay.com. However if I do: Resolv::getname(''155.136.68.24'') I get: irb(main):005:0> Resolv.getname(''155.136.68.24'') Resolv::ResolvError: no name for 155.136.68.24 Can anyone shed any light or suggest a better way of verifying the ip address? Cheers George --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---