What is the difference between pan domain name resolution and pan domain name binding?
Webmasters who often use virtual hosts are naturally all too familiar with domain name resolution. Of course, if you have more seniority, you may often hear about pan-domain name resolution and pan-domain name binding.
However, many people mistakenly think that pan-domain name resolution and pan-domain name binding are the same thing, or are often confused. In fact, there is still a difference between pan-domain name resolution and pan-domain name binding. Here we will briefly talk about it.
About pan domain name resolution
Pan domain name resolution is also often called domain name pan resolution, which is to use the wildcard * (asterisk) for sub-domain name resolution, so that all sub-level domain names point to the same web space.
The common form of pan-domain name resolution is *.domain.com, which resolves to an IP. In fact, the resolution method is similar to adding a subdomain name, except that the specific subdomain name (such as bbs) is replaced with the “*” symbol.
The reason why many webmasters like to do pan-domain name resolution is mainly because it has many benefits.
1. Prevent incorrect access to the website due to the wrong input of the URL address.
2. It is convenient to input, because any character input can access the target website (sub-site).
3. It can realize endless subdomains, provide free URL forwarding, and automatically allocate free URLs.
Of course, pan-domain name resolution also has a drawback, because if pan-domain name resolution is performed, multiple different sub-sites cannot be accessed in the host space at the same time.
At present, most domain names can be resolved by pan-domain name. The general method is to enter the domain name management panel, add a resolution record in “Domain Name Resolution Settings”, select the record type as “A record” and fill in the host name “RR” value as “*” and the pointed space IP address “Value” That’s it.
What is the difference between pan domain name resolution and pan domain name binding?
It is worth noting that the IP pointed to by the pan-domain name resolution must be an independent IP address, and shared IP is not allowed.
About generic domain name binding
To say that pan-domain name resolution corresponds to sub-domain name resolution, then pan-domain name binding is the binding of domain name and sub-domain name. As mentioned earlier, pan-domain name resolution requires an independent IP. However, most of the overseas spaces we use are shared IPs, so what should we do?
In fact, the pan domain name binding needs to be set on the server side, that is to say, if we use shared hosting, we do not have permission to set it ourselves. This can only be done after the hosting company has set it on the server side in advance. At present, many US virtual hosts support pan-domain binding. Of course, for the sake of safety, it is best to consult the hosting company whether the hosting space supports the pan-domain name binding setting before purchasing.
If the hosting space supports pan-domain binding, we only need to add a domain name binding record in the hosting control panel, similar to the subdomain binding settings. Of course, like pan-domain name resolution, you also need to use the wildcard * (asterisk) for subdomain binding.
What is the difference between pan domain name resolution and pan domain name binding?
Of course, before the pan-domain name binding, you need to resolve the domain name to the shared IP of the host space, and wait for it to take effect. In this way, we can set the PAN domain name binding on the shared virtual host space, so as to achieve the effect of sharing IP to achieve PAN domain name resolution.
In general, whether it is pan-domain name resolution or pan-domain name binding, the final effect is the same, that is, unlimited subdomains can access the same website. However, the principles and setting processes of the two are different, and everyone should distinguish them.
