Can a server have multiple A records?

Can a server have multiple A records?

You can do a lot with A records, including using multiple A records for the same domain in order to provide redundancy and fallbacks. Additionally, multiple names could point to the same address, in which case each would have its own A record pointing to that same IP address. The DNS A record is specified by RFC 1035.

How many A records can a domain have?

maximum:13 You can have unlimited number of IP address or A records for your domain name or sub-domains. The dns query in this case will be served in a round-robin fashion.

What is the difference between an A record and a host record?

A records and AAAA records are “address records” (hence the “A”) that map a hostname to an IP address. Because of that hostname -> IP mapping, some people refer to those records as “host records”. AAAA records are the same concept, except for IPv6 128-bit addresses. A records are for IPv4 which are 32-bit addresses.

Can domain have 2 A records?

2 Answers. Yes you can. It is called round-robin DNS, and the browser just chooses one of them randomly. It is a well used method of getting cheap load balancing, but if one host goes down, users will still try to access it.

What happens when I use multiple a Records?

Kind of a bad reputation, but it does prove it exists. Pretty much every browser does indeed receive the full list of A records, and does indeed check others if the one it is using fails. You can expect each client to have a 30 second wait when they first try to access a site when a server is down, until it connects to a working address.

Can you use multiple records in simple routing?

You can’t use multiple records of the same name and type with simple routing. However, a single record can contain multiple values (such as IP addresses). Use a multivalue answer routing policy to help distribute DNS responses across multiple resources.

Can a multivalued field be created in a query?

You can also create a Lookup field that displays a user friendly value bound to a value in another data source. When you query a Lookup or multivalued field, there are unique considerations. For more information, see Create or delete a multivalued field and Create or delete a lookup field.

Can a domain name have multiple a Records?

But you can try telnet-ing to a domain name with several A records, some with dead IPs and some good ones, if you need to prove it (yes, even good old telnet now uses getaddrinfo and handles multiple A records gracefully these days) — it will print out a nice list of the IPs it’s trying until it finally succeeds.