HKIX is definitely the incumbent IXP in that region, but I'd reckon that most high volume interconnection will take place in facilities like Mega-iAdvantage or Equinix HK1 via PNI.

Plus there are several alternative IXPs in Hong Kong that also handle undisclosed amounts of traffic.

From: NANOG <nanog-bounces@nanog.org> on behalf of bzs@theworld.com <bzs@theworld.com>
Sent: 19 November 2019 22:43:34
To: nanog@nanog.org <nanog@nanog.org>
Subject: 99% of HK internet traffic goes thru uni being fought over?

Is this plausible?

https://www.zerohedge.com/geopolitical/heres-real-reason-why-hong-kong-authorities-are-desperate-regain-control-university

or

http://tinyurl.com/slwchx8

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