Unlikely to be a Web Safe or a Virgin Media issue judging from the information provided thus far.
It is unclear why the DNS service for the network is being highlighted as an issue or why the authoritative resolver is referred to. Can you explain some more of what your concerns are here because AFAICS resolvers are correctly resolving the URL; as demonstrated by @Roger_Gooner earlier post?
What does your co-work see when browsing to link.go.chase/emNK and when running the following commands:
curl -IL link.go.chase/emNK
Post the redacted results here.
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