DNS Server Failure in East Japan Area

May 20, 2020
Asahi Net Inc.

Thank you for using Asahi Net.

We sincerely apologize for the inconvenience and difficulties caused by the DNS server failure occurred on May 20, 2020.

Details, cause, and recurrence prevention measures regarding this failure are as follows.

1. Overview

On 11:55 of May 20, 2020, failure has occurred in Asahi Net DNS server for East Japan area. The server has been recovered on 15:08 of May 20.

During this failure, there were difficulties in internet connection and sending/receiving emails.

2. Details

Date/Time

Occurrence: May 20, 2020 (Wed) 11:55
Recovery: May 20, 2020 (Wed) 15:08

Cause

There was an above-normal increase of DNS queries during the regular maintenance of DNS server. This exceeded the DNS server processing capacity, and became unresponsive.

We took time to identify this cause, requiring longer time for recovery.

Measures

Before recovery, we have enhanced the failed server equipment for East Japan area.

As a preventive measure, we will increase the number of servers for East/West Japan area so we can handle even more increased DNS queries in the future.

3. Inquiries

Please try rebooting your device if the situation has not improved yet.

If that does not still work, there may be problems other than this DNS failure. Please inquire our English Customer Support.

Asahi Net English Customer Support

Again, we sincerely apologize for the inconvenience and difficulties caused by the failure.