How to change colo to bangkok

[smartniti.sss]

I try to call
https://uat.smart-niti.com/cdn-cgi/trace
I got colo = SIN why it does not point to bkk which I use server on Huawei (thai datacenter)
fl=35f738
h=uat.smart-niti.com
ip=2403:6200:88a2:df70:351a:5d5e:58d7:e295
ts=1622463430.768
visit_scheme=https
uag=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36
colo=SIN
http=http/3
loc=TH
tls=TLSv1.3
sni=plaintext
warp=off
gateway=off

[sdayman]

Peering - Why don't I reach the closest datacenter to me?

Why don’t I reach the closest datacenter to me? Cloudflare is an anycast network, so where you are routed is determined by peering with ISPs. The shortest path geographically isn’t always possible due to peering agreements. If you request a site hosted on Cloudflare from home: The domain resolves to a Cloudflare IP Your browser sends an HTTP request to that IP Your ISP’s routers consult their routing table and route the packets upstream to their transit provider ( COSTS MONEY ) The packets …

[smartniti.sss]

Hello,

Thank you for answer
Current I use pro package, Could you please give the document ?

(client ->ISP → cloudflare ->WebServer All is in BKK except cloudflare)
almost client are in BKK but it detect to outside BKK,
It does not make sense, because ISP limit outside our country

If I can’t fix I can’t use cloudflare because internet bandwidth limit very slow.
I send query 3000 query in 1 time take time 10 mins for cloudflare which usually 2-3 mins
It’s very bad experience.