导航到 zoneedit.com，在 DNS 查找字段中输入 foursquare.com，然后在下拉列表中选择“Ip地址 (A)"，您会发现只列出了一条记录。经过进一步研究，我发现 Foursquare 托管在 Amazon Web Services 上，最有可能的情况是您将在单个 IP 负载均衡器后面托管多个服务器。您将需要获取 foursquare.co.uk 或它可能在其下运行的任何其他顶级域（COM、NET、CO.UK 等）的 IP，但据我所知，CO.UK 是它唯一的其他国家/地区经营于.
Navigate to zoneedit.com in the DNS lookup field enter foursquare.com and in the dropdown select "Ip Address (A)" you will find only one record listed. After further research I found that Foursquare is hosted at Amazon Web Services and the most likely scenario is that thy will have have multiple servers hosted behind a single IP'ed load balancer. You will need to get the IPs for foursquare.co.uk or any other top level domains it may operate under (COM,NET,CO.UK and so on) but from what I can find CO.UK is the only other country it operates in.
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你永远无法可靠地确定这一点。这并不像是他们正在使用一个子网。
您的 IT 人员需要根据您的目的（而不是 Foursquare 的目的）以不同的方式打开您的防火墙。
You'll never be able to reliably pin this down. It's not as if they are using one subnet.
Your IT guy needs to open up your firewall differently, based on your end, not Foursquare's.
导航到 zoneedit.com，在 DNS 查找字段中输入 foursquare.com，然后在下拉列表中选择“Ip地址 (A)"，您会发现只列出了一条记录。经过进一步研究，我发现 Foursquare 托管在 Amazon Web Services 上，最有可能的情况是您将在单个 IP 负载均衡器后面托管多个服务器。您将需要获取 foursquare.co.uk 或它可能在其下运行的任何其他顶级域（COM、NET、CO.UK 等）的 IP，但据我所知，CO.UK 是它唯一的其他国家/地区经营于.
Navigate to zoneedit.com in the DNS lookup field enter foursquare.com and in the dropdown select "Ip Address (A)" you will find only one record listed. After further research I found that Foursquare is hosted at Amazon Web Services and the most likely scenario is that thy will have have multiple servers hosted behind a single IP'ed load balancer. You will need to get the IPs for foursquare.co.uk or any other top level domains it may operate under (COM,NET,CO.UK and so on) but from what I can find CO.UK is the only other country it operates in.