[Core Network] Informational Notice 18th December 2018 - Barclays - Update 1
Posted by David Croft on 19 December 2018 11:31 AM
This issue was resolved at 20:00 last night by Barclays rerouting
their network traffic.

Customers should now be able to successfully access


David Croft

On Tue, 18 Dec 2018 at 16:31, David Croft <david.croft at> wrote:
> A number of customers have reported an inability to access
> since the weekend
> We have conclusively proved that there is no issue on our network,
> even going as far as to packet capture at all of our border routers
> which has verified that absolutely no response is being received from
> to the TCP SYN packets which initiate the connection.
> We have been in contact with Barclays's DDoS protection provider
> Akamai/Prolexic who, while unable to divulge the exact problem due to
> the nature of their business, have also absolutely confirmed that the
> issue is not on their network but with Barclays.
> We have reached out to Barclays through multiple channels in an
> attempt to reach an network engineer in the correct department to
> diagnose and fix this problem however as yet they have not been
> responsive.
> Regards
> David Croft
> --
> For urgent operational issues please always contact noc at
> or 0845 899 1423 and not any named individual.

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