Can we have more than 10000 records in DNS zone

Question

Can we have more than 10000 records in DNS zone

Sudhir 25

Can we have more than 10000 records in DNS zone? is 10000 a hard limit on DNS zone. What should I do if I have more than 10000 records in DNS zone.

Ali Mujahid 5 Reputation points

2023-05-12T10:36:11.23+00:00

Are you sure you want 10000 records in one dns zone? Isn't it better to span it in different zones and merge the zones for better administration and load balancing.
Konstantinos Passadis 19,591 Reputation points MVP

2023-05-12T14:31:07.56+00:00

Hello @Sudhir ,

Do you have any feedback or your issue is resolved?

Kindly mark the answer as Accepted and Upvote in case it helped or post your feedback to help !

Regards
GitaraniSharma-MSFT 50,096 Reputation points Microsoft Employee Moderator

2023-05-16T14:15:34.9+00:00

@Sudhir , Just checking in to see if you had a chance to see the below answer. To help the community find the right answers, please do mark the post which was helpful by clicking on Accept Answer.

And, if you have any further questions do let us know.

Accepted answer

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Ali Mujahid 5 Reputation points

2023-05-12T10:36:11.23+00:00

Are you sure you want 10000 records in one dns zone? Isn't it better to span it in different zones and merge the zones for better administration and load balancing.
Konstantinos Passadis 19,591 Reputation points MVP

2023-05-12T14:31:07.56+00:00

Hello @Sudhir ,

Do you have any feedback or your issue is resolved?

Kindly mark the answer as Accepted and Upvote in case it helped or post your feedback to help !

Regards
GitaraniSharma-MSFT 50,096 Reputation points Microsoft Employee Moderator

2023-05-16T14:15:34.9+00:00

@Sudhir , Just checking in to see if you had a chance to see the below answer. To help the community find the right answers, please do mark the post which was helpful by clicking on Accept Answer.

And, if you have any further questions do let us know.

Answer 1

GitaraniSharma-MSFT 50,096 Microsoft Employee Moderator

Hello @Sudhir ,

Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.

I understand that you would like to know if 10000 a hard limit for records in a DNS zone and if you can have more than 10000 records in DNS zone.

10000 is not a hard limit for records in a DNS zone and it can be increased.

Yes, you can have more than 10000 records in a DNS zone but to do that you need to contact Azure Support and request for a limit increase providing a business justification.

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If your Azure subscription is qualified and you have a valid business justification, the Azure DNS Product group team may help in increasing the records limit for a DNS zone.

Hence, if you have a support plan, I request you file a support ticket, else please do let us know, we will try and help you get a one-time free technical support.

Kindly let us know if the above helps or you need further assistance on this issue.

Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

Sudhir 25 Reputation points

2023-05-18T16:58:12.3+00:00

Hi Gita,

this is helpful. I overlooked the option that we can contact Azure support for increasing limits. Thanks for highlighting.
Sudhir 25 Reputation points

2023-05-18T17:02:41.27+00:00

I have requirement of storing 6 records per record set and the number of record sets could go beyond 10000. for this I think I have to check with azure support for increasing limit. Will Support increase limit to any extent or is there an upper limit to which they can go beyond 10000. I mean do they have some limit at 20000 beyond which even Aure support also might not increase the limit ?
GitaraniSharma-MSFT 50,096 Reputation points Microsoft Employee Moderator

2023-05-19T05:37:42.5066667+00:00

Hello @Sudhir ,

It is difficult to say the actual hard limit for the DNS records as it may vary depending upon the underlying architecture/capacity/region etc.

However, if your Azure subscription is qualified, and you have a valid business justification, the Azure DNS Product group team will help in increasing the records limit as per your request.

I've seen requests to increase the limit to 40000 records which were approved and allocated.

So, you can request a number which seems to fit your requirement and if capacity is available, the Product group team will allocate it accordingly.

Regards,

Gita
Sudhir 25 Reputation points

2023-05-19T18:10:29.8966667+00:00

Thanks for clarification.

Answer 2

Hello @Sudhir !

Welcome to Microsoft QnA!

You need to know the limits of Azure DNS

Here it is : From this LINK

What are the usage limits for Azure DNS?

The following default limits apply when you use Azure DNS.

Public DNS zones


Public DNS zones per subscription	250 <sup>1</sup>
Record sets per public DNS zone	10,000 <sup>1</sup>
Records per record set in public DNS zone	20
Number of Alias records for a single Azure resource	20

1If you need to increase these limits, contact Azure Support.

Private DNS zones


Private DNS zones per subscription	1000
Record sets per private DNS zone	25000
Records per record set for private DNS zones	20
Virtual Network Links per private DNS zone	1000
Virtual Networks Links per private DNS zones with auto-registration enabled	100
Number of private DNS zones a virtual network can get linked to with auto-registration enabled	1
Number of private DNS zones a virtual network can get linked	1000
Number of DNS queries a virtual machine can send to Azure DNS resolver, per second	1000 <sup>1</sup>
Maximum number of DNS queries queued (pending response) per virtual machine	200 <sup>1</sup>

1These limits are applied to every individual virtual machine and not at the virtual network level. DNS queries exceeding these limits are dropped.

DNS private resolver1


DNS private resolvers per subscription	15
Inbound endpoints per DNS private resolver	5
Outbound endpoints per DNS private resolver	5
Forwarding rules per DNS forwarding ruleset	1000
Virtual network links per DNS forwarding ruleset	500
Outbound endpoints per DNS forwarding ruleset	2
DNS forwarding rulesets per outbound endpoint	2
Target DNS servers per forwarding rule	6
QPS per endpoint	10,000

I hope this helps!

Kindly mark the answer as Accepted and Upvote in case it helped!

Regards

Answer 3

Ali Mujahid 5

You can always contact Azure support and they will be happy to increase your DNS zone records limits. However the better question to ask will be if you need that much records in one zone? Why not think about having different zones and merge them for better administration and future load balancing provisions.

Sudhir 25 Reputation points

2023-05-18T17:05:23.1866667+00:00

yes you are right, I will take a look at using different zones
Sudhir 25 Reputation points

2023-05-19T18:19:22.08+00:00

IS it better to create single zone with different scopes for different regions (like USZoneScope, EuropeZoneScope) or create seperate zone for seperate region ?

Answer 4

Konstantinos Passadis 19,591 MVP

Hello @Sudhir !

Did you find any of the answers helpful ?

To sum it up 10.000 record set with 20 records per set is the limit for Public Zone and 25.000 for Private Zone with 20 records per set .If you want to have more than 200.000 records you can consider raising a ticket in Microsoft Azure Support!

I hope this helps!

Kindly mark the answer as Accepted and Upvote in case it helped!

Regards

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Can we have more than 10000 records in DNS zone

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