Urgent Action Needed: AdGuard Causing DNS Resolution Issues for mbp.hanabank.com

[justin-mc]

I am writing to express my concern over a critical issue that has arisen due to AdGuard's service. It appears that the domain name mbp.hanabank.com, which is vital for the operation of a popular Korean commercial banking application, is failing to resolve correctly. Consequently, this has rendered the banking application unusable, thereby impacting numerous users who rely on it for their daily financial transactions.

The robust and reliable functioning of such apps is essential, particularly for those users who depend on these services for their everyday banking needs. Therefore, this ongoing issue is causing significant inconvenience and potential financial repercussions.

I kindly request that your team investigates this matter urgently and take the necessary measures to ensure the successful DNS resolution of the domain mbp.hanabank.com. Restoring its functionality is of utmost importance and will be appreciated by all its users.

Thank you in advance for your swift response and prompt resolution of this issue.

[piquark6046]

I heard that an employee of hanabnak's zendesk ticket related to the issue was submitted and is being processed. During processing time, please use Cloudflare DNS server instead of AdGuard DNS server temporary.
@ameshkov will handle the issue.

[ameshkov]

The technical details on this issue are here: https://github.com/List-KR/List-KR/discussions/732#discussioncomment-6292291

TLDR: it's not AdGuard DNS blocking that domain, but the domain owners are preventing AdGuard DNS from resolving it.