How to review an Azure unused public ip
A public IP resource has no current Azure association that justifies its recurring charge. An empty direct association is useful evidence, but DNS, firewall, allowlist, IaC, or future failover dependencies can exist outside that relationship.
Trace the address outside Azure associationsWho reviews this signal?
- Accountable owner
- Network / service owner
- Review cadence
- Weekly
Check observation dates and read-only scope. Your team approves and implements changes outside Costframe.
How this finding happens
- →A NIC, load balancer, gateway, or test environment is removed without its IP.
- →An IP is reserved before a migration and the project changes.
- →A static address remains in DNS or partner allowlists after traffic moves.
Collected evidence and verification limits
Checked when available
- ✓Public IP resource, SKU, allocation method, address, region, and association reference
- ✓Related NIC, load-balancer, gateway, and IP-configuration relationships
- ✓Recent configuration/activity evidence where available
- ✓Current billed or catalog price basis
Not always verifiable
- —Azure association does not reveal third-party allowlists or external DNS references.
- —Zero traffic alone does not prove an address is unused.
- —Deleting a static IP can make the address unrecoverable.
Missing or stale evidence is a limitation, not a passed check.
Why this finding might be wrong
These conditions lower confidence or require manual owner review before action.
- Disaster-recovery or failover address
- Partner allowlist or certificate dependency
- DNS record with intentionally infrequent traffic
- Reserved address for an approved migration window
Plan the change and recovery path.
- Search DNS, IaC, firewall rules, NAT/gateway configuration, certificates, and partner allowlists.
- Identify the service owner and approved reservation window.
- Remove external references before deleting the resource.
- Monitor connection failures and document the previous address.
Rollback / recovery
Recreate and rewire the public endpoint. The same address may not be recoverable after deletion, so external references require a deliberate cutover plan.
How savings are calculated
Direct monthly saving equals the net charge for the public IP resource only; dependent services are analyzed separately.
Do not quote a quantified saving when the billing scope, pricing basis or required workload evidence is incomplete or stale. Treat a modeled amount as estimated until suitable billed outcomes support it.
Check the billed outcome
Resource and billed IP charge disappear without DNS, connection, or allowlist incidents.
Trace the address outside Azure associations
Give the network owner the public address and its current association. Check external DNS, partner allowlists, firewall rules and failover runbooks. Preserve the cutover plan: deleting an address does not guarantee that the same address can be recovered.
Check the linked traffic pathIf the owner cannot resolve a dependency or recovery requirement, keep the candidate in review rather than treating it as approved.