[DNSSEC-Ops] Afrinic DNS Issue -- PNC Bank NA
amreesh at afrinic.net
Thu Jul 19 16:26:48 UTC 2018
Thank you for reaching out. But I’m not sure AFRINIC has anything to do with this, as our role is limited to maintaining reverse DNS.
The client IPs do not use AFRINIC DNS server to resolve the CNAME, they might want to talk to their operator, which I suppose maintains a resolver.
Hope that helps.
> On 19 Jul 2018, at 11:11, Filisko, Steven V <steven.filisko at pnc.com> wrote:
> To Whom It May Concern:
> I'm from PNC Bank in the US. We swapped a CNAME in our DNS on 2018-06-27 to move clients to new DataCenters for our Mobile Banking App.
> I am seeing a small number of customer client IPs hitting our old Datacenter -- All are IPs registered to AfriNic.
> I believe there is a bad cache within your DNS systems. The TTL should have expired in 300s.
> The following are the affected names.
> PROPER RESOLUTION:
> servicelink1.pnc.com canonical name = servicelink.glbo.pnc.com.
> servicelink2.pnc.com canonical name = servicelink.glbo.pnc.com.
> PREVIOUS RESOLUTION:
> servicelink1.pnc.com canonical name = servicelink1.glbo.pnc.com.
> servicelink2.pnc.com canonical name = servicelink2.glbo.pnc.com.
> AfriNic Client IPs:
> Please let me know what can be done about this and let me know if you require additional information!!!
> Steven V. Filisko
> Lead Security Engineer / DataPower ATL | PS&A
> Product Security & Assurance | Cyber Security
> PNC Financial Services Group | Cleveland
> steven.filisko at pnc.com
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