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Editorial Team
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Asked: 2026-05-11T16:12:57+00:00

I tried to put the line to /etc/hosts: IP math.com mathworld.com where IP was

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I tried to put the line to /etc/hosts:

IP math.com mathworld.com

where IP was supposed to be the IP of http://mathworld.wolfram.com/classroom/. I pinged the site, and I realised that I must direct traffic with some other tools:

ping mathworld.wolfram.com/

ping: cannot resolve mathworld.wolfram.com/: Unknown host

So the question arises:

How can I direct traffic to subdomains, similar to the above subdomain?

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1 Answer

  1. Editorial Team

    You seem to be confused about networking terminology.

    http://mathworld.wolfram.com/classroom/ is a URL, not a domain name. It has no IP address. mathworld.wolfram.com is a domain name and has an IP address.

    Also, mathworld.wolfram.com is a subdomain of wolfram.com which is a subdomain of the com top level domain.

    mathworld.wolfram.com is not a subdomain of mathworld.com

    The /etc/hosts is not powerful enough to map all subdomains of a domain to the same place. You will need to type them all out, or go into proper DNS server configuration (such as named.conf).

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