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azure-virtual-network-limits.md

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title description services author ms.service ms.topic ms.date ms.author ms.custom
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networking
anavinahar
networking
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12/05/2022
anavin
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Networking limits - Azure Resource Manager

The following limits apply only for networking resources managed through Azure Resource Manager per region per subscription. Learn how to view your current resource usage against your subscription limits.

Note

We have increased all default limits to their maximum limits. If there's no maximum limit column, the resource doesn't have adjustable limits. If you had these limits manually increased by support in the past and are currently seeing limits lower than what is listed in the following tables, open an online customer support request at no charge

Resource Limit
Virtual networks 1,000
Subnets per virtual network 3,000
Virtual network peerings per virtual network 500
Virtual network gateways (VPN gateways) per virtual network 1
Virtual network gateways (ExpressRoute gateways) per virtual network 1
DNS servers per virtual network 20
Private IP addresses per virtual network 65,536
Total Private Addresses for a group of Peered Virtual networks 128,000
Private IP addresses per network interface 256
Private IP addresses per virtual machine 256
Public IP addresses per network interface 256
Public IP addresses per virtual machine 256
Concurrent TCP or UDP flows per NIC of a virtual machine or role instance 500,000
Network interface cards 65,536
Network Security Groups 5,000
NSG rules per NSG 1,000
IP addresses and ranges specified for source or destination in a security group (The limit applies separately to source and destination) 4,000
Application security groups 3,000
Application security groups per IP configuration, per NIC 20
Application security groups referenced as source/destination per NSG rule 10
IP configurations per application security group 4,000
Application security groups that can be specified within all security rules of a network security group 100
User-defined route tables 200
User-defined routes per route table 400
Point-to-site root certificates per Azure VPN Gateway 20
Point-to-site revoked client certificates per Azure VPN Gateway 300
Virtual network TAPs 100
Network interface TAP configurations per virtual network TAP 100

Public IP address limits

Resource Default limit Maximum limit
Public IP addresses1,2 10 for Basic Contact support
Static Public IP addresses1 10 for Basic Contact support
Standard Public IP addresses1 10 Contact support
Public IP prefixes limited by number of Standard Public IPs in a subscription Contact support
Public IP prefix length /28 Contact support
Custom IP prefixes 5 Contact support

1Default limits for Public IP addresses vary by offer category type, such as Free Trial, Pay-As-You-Go, CSP. For example, the default for Enterprise Agreement subscriptions is 1000.

2Public IP addresses limit refers to the total amount of Public IP addresses, including Basic and Standard.

The following limits apply only for networking resources managed through the classic deployment model per subscription. Learn how to view your current resource usage against your subscription limits.

Resource Default limit Maximum limit
Virtual networks 100 100
Local network sites 20 50
DNS servers per virtual network 20 20
Private IP addresses per virtual network 4,096 4,096
Concurrent TCP or UDP flows per NIC of a virtual machine or role instance 500,000, up to 1,000,000 for two or more NICs. 500,000, up to 1,000,000 for two or more NICs.
Network Security Groups (NSGs) 200 200
NSG rules per NSG 200 1,000
User-defined route tables 200 200
User-defined routes per route table 400 400
Public IP addresses (dynamic) 500 500
Reserved public IP addresses 500 500
Public IP per deployment 5 Contact support
Private IP (internal load balancing) per deployment 1 1
Endpoint access control lists (ACLs) 50 50