It seems like mirror.thaidns.co.th isn't hosted in Thailand. I've looked up the IP Address from thailand but it seems to resolve to IP located in Singapore. Is there any mistake on the DNS?

[root@vpn ~]# dig mirror.thaidns.co.th

; <<>> DiG 9.9.4-RedHat-9.9.4-73.el7_6 <<>> mirror.thaidns.co.th
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42581
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 7, ADDITIONAL: 14

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;mirror.thaidns.co.th.          IN      A

;; ANSWER SECTION:
mirror.thaidns.co.th.   564     IN      A       139.99.57.31