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UltraDNS


DNS Resolution

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UltraDNS2


DNS Resolution

Operational

Zone Propagation

Operational

Primary Zone Transfer

Operational

Secondary Zone Transfer

Operational

API

Operational

Portal

Operational

Reporting

Operational

UltraDNS Firewall


DNS Resolution

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API

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Portal

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Reporting

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Customer Support


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1

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Incidents Last 30 Days

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Maintenances Last 30 Days

External Services

Status.io

Scheduled Maintenance

UltraDNS: New Traffic Management IP'sPlanned Maintenance

Schedule

January 21, 2026 12:00AM - 6:00AM UTC

Components

UltraDNS, UltraDNS2

Service

Zone Propagation

Description

We will be adding new IP addresses to the US Central pool of SiteBacker testing locations. These are expected to be active as soon as January 21, 2026. Please whitelist these IP's if they are monitoring endpoints that may block external IP's. 156.154.96.153 156.154.96.154 2610:a1:306c:128::153 2610:a1:306c:128::154 Where can I find the full set of source IP's? https://ultra-portalstatic.ultradns.com/static/console/docs/Traffic_Management_IPs_for_Probing.html has all current monitoring IP's and will be updated in near future to include the new source IP's. Which products does this apply to? SiteBacker, Traffic Controller, Simple Monitor/Failover, Simple Load Balancing. If you do not use any of these products, this notice is not relevant to you. Do these new IP's need to be whitelisted? It depends on your environment. If your monitored endpoints are open to the Internet, whitelisting is not required. If you block some external IP's from accessing your monitored endpoints, you may need to add these IP's to your existing whitelist. What happens if these IP's are not whitelisted and are blocked by your side? It's possible there will be false alarms on your monitored pools and that US Central region will be considered failed for a probe. Please note that typically you need more than one region in failure for a failover to backup records to occur.
System status for UltraDNS services. For inquiries, visit https://www.ultraproducts.support/hc/en-us

History

No incidents in the last 7 days