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You can always edit your Windows Hosts file and add that domain name to point to your IP address hosting your copy of x.com<br />
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located in /windows/drivers/etc/hosts<wbr /> it has examples in the file on how to enter the information. <br />
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That way whenever you try to browse to x.com from your PC it will always redirect to where you point it via the hosts file. <br />
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is this what you mean ?<br />
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Steve
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if you have a local DNS Server in your network, you could also create x.com in there and point it to your local resources. <br />
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so long as the PC's that need to use your copy of x.com use that DNS server as their primary then that would work too. <br />
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Steve
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Does X.com resolve to the correct IP address of the site from within your network?
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how I can open a webpage internal if the external domain is &quot;X.com&quot; &nbsp;but my internal domain is Y.com ? &nbsp;right now when try to open a webpage in my office X.com is not open, but if I try X.com external at home or other office I can open it
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how I can open a webpage internal if the external domain is "X.com"  but my internal domain is Y.com ?  right now when try to open a webpage in my office X.com is not open, but if I try X.com external at home or other office I can open it

DNS Forward

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

HTTPS is a protocol for secure communication over a computer network which is widely used on the Internet. HTTPS consists of communication over Hypertext Transfer Protocol (HTTP) within a connection encrypted by Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL). The main motivation for HTTPS is authentication of the visited website and to protect the privacy and integrity of the exchanged data. HTTPS is widely used for protecting page authenticity on all types of websites, securing accounts and keeping user communications, identity and web browsing private.

SSL / HTTPS

Web browsers are applications used primarily to display documents, files and media from the Internet, identified by a Uniform Resource Identifier (URI) that can be a page, image, video or other file. Some browsers require the use of add-ons or extensions to safely render the information they receive; others have systems built into them to perform the same functions.