Questions tagged [subdomain]

In the Domain Name System (DNS) hierarchy, a subdomain is a domain that is part of a larger domain.[1]

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How websites discover subdomains using only 'A' DNS records [closed]

Don't 'A' records only return IPv4 addresses? Why do some websites return subdomains? How do they find those subdomains? I mean, are they doing normal subdomain bruteforcing then resolve each ...
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Does the Glue record get cached by the Recursive resolver?

Does the IP address of authoritative name server from Glue record get cached by the Recursive resolver? The name server for a top level domain includes glue along with the delegation for a domain name....
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Access home network machine via hosted subdomain

I would like to be able to use a subdomain of my externally hosted website to access a particular port of a machine on my home network. For example, say my domain is example.com, I would like to be ...
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Allows customers to add custom domains with firebase/google cloud?

I'm currently working on an app that let's app users create their own landing pages. Just a little preface the app runs on firebase cloud functions, hosting, and the auth service Google provides. I'm ...
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Apache redirect all non valid wildcard subdomains to root domain

Is it possible to redirect all 404 subdomain result to the root domain in apache2? Im using a wildcard subdomain entry in my DNS provider, and apache is set to fetch the site in the folder with the ...
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Wild card subdomain of subdomain in apache 2.4

currently I have worked wildcard subdomain config like below: <VirtualHost *:80> ServerAlias *.domain ErrorLog /tmp/error.log CustomLog /tmp/access.log combined ...
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Correctly point DNS to subdomain from cloudflare to cpanel server? [closed]

I have a CPANEL server hosting some websites and webmails, a couple of days ago I was asked to add SSL security to this websites and decided to use cloud flare to do this. So I added the domain in ...
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2answers
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Different SSH login with subdomain on same IP

I'm in the following situation: I own a domain pointing on my local network (NAT), let's call it domain.ch. I have set a subdomain sub.domain.ch pointing on the same IP as domain.ch. What I would ...
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How is .google a domain extension? [closed]

I just visited blog.google. How does that work? Can organisations register their own domain extensions? If yes, what is the procedure and how expensive is that? If not, how did they achieve the blog ...
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Subdomain redirected to main domain

When creating my new vps server which contains apache, I added a domain and a sub domain but i'm confusing with a problem that the sub domain redirect me to main domain i thinks the problem comes from ...
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Is the subdomain _acme-challenge protected?

I was looking into the DNS-01 challenge of Let's Encrypt; and I had a question about the sub domain process [1]. Let's say, the website example.com gives away free subdomains; what stops me to ...
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Nginx VirtualHosts with Subdomains always directs to primary domain

I have two sites running as below. Server : nginx/1.14.2 / Debian 10 primary site mydomain.com in /var/www/mydomain directory sub site blog.mydomain.com in /var/www/blog` directory See DNS entries. ...
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CNAME from 1 subdomain to another subdomain

I have added a CNAME from order.checkoutchiangmai.com to restaurant1.acemsweb.com. The result I have is "Apache is functioning normally" when I open order.checkoutchiangmai.com. I am unsure why the ...
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Redirecting subdomain to another server shows server's IP

Let's say I have a domain x.com which is hosted on server1. I made a subdomain sub.x.com and pointed it towards server2. All of this worked successfully, except now I see server2's IP instead of sub.x....
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Apache2 not working with several subdomains (only one) on Ubuntu 19.04 (Virtual Hosts)

so I have a problem with Apache 2 (2.4.38) virtual hosts. I have set up two of them successfully, one for my actual domain (i. e. example.com) and one for a subdomain (blog.example.com). I then tried ...
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What are the drawbacks of getting a free domain name [closed]

To configure a server, especially its email services, I'd need several @serverdomainname.topdomain. I saw it is possible to pick some free domain names that would end in .tk, .ga, .xyz, etc. I don't ...
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LetsEncrypt certificate for nested wildcard subdomain [duplicate]

I've generated Lets Encrypt wildcard certificate for my domain *.domain.com. I thought this certificate is valid for any nested subdomain *.*.domain.com, like it.*.domain.com or fr.*.domain.com. But ...
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CNAME records pointing to SRV record

I have multiple services running that I'd like to access through one port. To make something like this work, I have a proxy server running that can redirect clients based on the url they connect with. ...
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SRV record for subdomain: Do I also need a CNAME or A record for that same subdomain?

I have a service running on port xxxxx. I want to access that service through a subdomain (myspecialservice.mydomain.com). I know I need to create an SRV record that looks like _Service._Proto....
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Redirect request of subdomain to server/path

Currently, we are having two webservers, the first one is directly handling request from domain1.com. I'm trying to deploy another webserver in which it will handle request from sub.domain2.com. ...
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SSH: Why do I have to re-verify the fingerprint when connecting to the same server from another domain?

In the following I'm talking about the OpenSSH Client installed by default on debian. I'd like to have multiple (sub)domains pointing to my server(s) (so multiple per server), i.e. database.example....
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Is a subdomain essentially a host?

I'm trying to understand the difference between a subdomain and a domain in a LAN versus a WAN (Internet). (Or am I just fooling myself. Is it the same?) If I google it I just get that a subdomain is ...
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SSL certificate mismatch, multi vendor website

I have a website hosted on *.mydomain.com, my Apache web server in conjunction with PHP will return/echo some plain text based on the subdomain provided. *.mydomain.com is secured with a wildcard SSL ...
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Redirect SLD to subdomain on registrar using SSL and dynamic dns

I want to redirect / forward https://example.com second-level-domain to https://www.example.com subdomain without having a SSL certificate on registrar itself (but on own server). My problem is, that ...
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Slashes instead of subdomains to prevent blocking?

We are a B2B SaaS company working with big financial clients. Our products are accessed as product1.example.com, product2.example.com, emails.example.com, etc. We sometimes face problems where a ...
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Windows 2019 IIS webserver redirect

I have 1 IIS web server (Main) and 5 other IIS web servers behind it (1-5). The applications are all different and there are 125 of them. They are split up between the 5 servers. I'm wanting to use a ...
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Subdomain setup for Flask + apache

I have installed and deployed Flask on a CentOS server but the subdomain for some reason, is not working properly. I really need some help on this one. I am actually a newbie in this field so please ...
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Is there official name of sub-subdomain (i.e. “test2” of FQDN “test2.test1.example.com”)

Is there an official name for a sub-subdomain: i.e. test2 of FQDN test2.test1.example.com; if not, is this expression commonly used? Also, what if there is more granular FQDN such as test3.test2....
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Subdomain for specific ports?

Summary: In a broader context, I just need a way to connect to multiple servers that are all running the same services on the same network without having multiple external IP addresses or having to ...
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Is there a way to craft a Cloudflare API token such that it can only edit a specific *sub*domain's records?

I'm hoping to use Let's Encrypt for several domains and subdomains and my company. In lieu of buying a long lasting wild card cert that is installed on every machine, the goal is to use short lived ...
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Nginx & Django & Gunicorn - Redirecting subdomain to app

I did an extensive search on the topic but nothing could help me. I am currently building a Django site, and using Nginx to reverse proxy to Gunicorn. I am trying to separate my apps into subdomains....
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Email,DNS, Subdomain issues

I am trying to spin up my own mail server (mail-in-a-box because it seemed simple) for myDomain.com. I spun up a Linode server & got port 25 open and mapped box.myDomain.com to redirect me to the ...
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MX record delegation

I have a client who manages their own DNS - all the A records and CNAME records for example.com and a number of subdomains. They want to use a dedicated subdomain for email - em.example.com. They ...
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Server compromised or hacked

I don't understand how this subdomain appeared today: http://hainanbank.com.cn.croppio.com/. I have only added https://croppio.com/ without any sub-domains. I double checked the server configuration ...
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Alter incoming URLs for HTTP/HTTPS to force the “www” subdomain in Tomcat 9

I want every URL coming into my Tomcat web server to carry the www subdomain prefix. How can I have Tomcat alter an incoming URL such as this: http://Example.com/whatever …to include the www ...
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can I get guidence with setting up a subdomain? [closed]

Can someone actually give me the steps on how to create a subdomain and not link me to some random ressources? I have a TLD and run a site on that, but I want create a subdomain for it and install ...
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How to configure different web app from different server with Nginx?

I have a website with domain example.com in a server with IP x.x.x.x. It runs with Nginx and Let's Encrypt very well, which is located in /var/www/app1. The domain is obtained and managed via a ...
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Nginx Wildcard Subdomain Automatic Creation of Access Log File

I have almost 200 subdomains on NGINX and have the directive access_log /var/log/nginx/$host-access.log; The problem is none of the subdomain access log files actually exist, so the error log is ...
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Nginx not redirecting subdomain (instead directing to default)

I have an empty file in sites-available ubuntu@ip-111-11-11-111:/etc/nginx/sites-available$ ls default dev.example.io It is symlinked into sites-enabled: ubuntu@ip-111-11-11-111:/etc/nginx/sites-...
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Hide subdomains from scan tools

How can I hide the subdomains list from scan tools like dnsdumpster? I have some subdomains, where I keep dev versions of my projects. I need to be sure that nobody can know about subdomains.
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Am able to ping my domain, but not subdomain (digitalocean)

My main domain (say: example.com) on DigitalOcean is working ok. I've only one droplet in there. Then I created 'a' record under my main domain with another subdomain name (1.example.com). Then, I ...
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Configure Multiple Domains and an IP Address with NGINX

I've asked on the forums before but didn't get answer so I'm going to try again. I'm trying to setup NGINX with PHPMyAdmin and I want to access the site via two subdomains and an IP address. The ...
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How to host CloudFlare DNS subdomain at different IP

I'm using CloudFlare for DNS and Digital Ocean for servers. Let's call my website "example.com". It has been working fine. I've now created a second server, which has a different IP. I want a new ...
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What is the difference between @ and ns records

I trying to understand the difference between an A record with @ and ns records. I am trying to point a subdomain testing.example.com to another server that will have its own DNS server, mail server ...
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nginx conditional rewrite based on subdomains

I have the current nginx config that changes all subdomain requests to a specific pattern (foo.example.com -> www.example.com/co/home/foo): server { listen 80; server_name *.example.com; ...
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Active directory group scope - Domain local or Global?

CONTOSO has offices in the UK and in the US. each country has its own domain, but the domains trust each other. I have created a group in the AD in UK but if the group is set to global I cannot add ...
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How to implement subdomains for users in Apache

Im building a platform, where the main domain is example.com. The server is using CentOS 7 with Apache 2. My users' URL will be username.example.com, which actually loads the contents from example....
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Host a subdomain in Azure DNS and the domain in webs.com

What I have: A domain purchased in webs.com (I'll call it contoso.com); A main website hosted in webs.com using contoso.com as dns (I didn't build and configure it by myself); A second website (its ...
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Apache2 & Cloudflare - Subdomain to Port (with ProxyPass)

I just can not find the mistake .. and need your help. Sorry for my bad english guys. My apache2-config: <VirtualHost *:80> ServerAdmin bl4cklistserver@gmail.com ServerName citybuild.bl4cklist....
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Dynamic subdomain pointing to html folder

I have a PHP script that takes the subdomain i.e blah.example.com and runs a query based on that. The problem I have is that I can't get my new server to route any subdomain that someone may type to ...

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