What is the maximum number of DNS A-records you can use on one domain?

Question

Is it correct that there is no limit to how many DNS A records can be set on a domain?

My boss asked me this and it made me curious, I can't find anything online.

Solution

Registrars and DNS servers for DNS management use a zone file which keeps all your DNS records for things such as A and AAAA records. Zone files are naturally unrestricted in the amount of information they can hold.

However....

Some registrars have limits within their standard DNS management and require users to upgrade to a premium/pro DNS manager which has many more features and increases the limits. I have seen some DNS managers having hidden limits and not something they advertise. So you may need to ask your current registrar for that limit... if one applies.

Your boss has nothing to worry about and he'll be able to have 100's 1000's... and even more... just check with your registrar the limit and upgrade if required.

Comments

[Jonx]

Nameserver limits have no bearing on A record limits.

[Nilabh]

That was additional information.

[Jonx]

Additional information not relevant to the question can always be linked, however, providing it in this context diminishes the quality of your answer. I can remove the downvote if you edit your answer (downvotes are locked after two hours, unless an answer is edited).

[Achra]

Thank you Nilabh. Adding the additional info about the nameserver limits helped me get a handle on this issue.