Use cases
Software Products E-commerce MSPs Schools Development & Marketing DevOps Agencies Help Desk
Company
Internet Status Blog Pricing Log in Get started free

UltraDNS Outage History

Every past UltraDNS outage tracked by IsDown, with detection times, duration, and resolution details.

There were 15 UltraDNS outages since July 2023. The 3 outages from the last 12 months are summarized below, with incident details, duration, and resolution information.

Minor April 15, 2026

April 2026: UltraDNS - DNS Resolution Advisory

Detected Apr 15, 2026 4:06 AM EDT · Resolved Apr 15, 2026 7:19 AM EDT · Duration about 3 hours

UltraDNS experienced a DDoS attack against nameservers in Asia and Australia regions, causing DNS resolution timeouts for customers in those areas. The incident lasted 3.2 hours while teams worked to mitigate the attack and fine-tune countermeasures. The service was restored after teams successfully mitigated the majority of the attack and nameserver performance recovered.

Minor April 4, 2026

April 2026: UltraDNS - DNS Resolution Advisory

Detected Apr 4, 2026 9:19 AM EDT · Resolved Apr 4, 2026 11:15 AM EDT · Duration about 2 hours

UltraDNS experienced a DDoS attack against nameservers in parts of Asia and Europe, causing DNS resolution timeouts for customers in these regions. The attack was progressively mitigated over 1.9 hours, with Europe and most of Asia recovering first, followed by Singapore as the final affected region. The incident was resolved through active mitigation efforts and countermeasures deployed by the engineering teams.