为什么新加坡的 vps， google 却是跳转到 google.com.hk, 而不是 google.com.sg?

Conoha 的新加坡的节点，打开一个隐身窗口（不讨论 ncr 问题）， www.google.com 会跳转到 hk 首页，然而，日本节点却是正常跳转到 co.jp 首页，还有 DO 的新加坡节点也能正常跳转到 com.sg, 那么问题在哪里？

附：(如果有需要用到)
➜ ~ # cat /etc/resolv.conf
; generated by /sbin/dhclient-script
nameserver 8.8.8.8
nameserver 8.8.4.4

➜ ~ # ping -c 1 www.google.com
PING www.google.com (216.58.221.196) 56(84) bytes of data.
64 bytes from kix03s02-in-f4.1e100.net (216.58.221.196): icmp_seq=1 ttl=51 time=81.2 ms

➜ ~ # nslookup www.google.com
Server: 8.8.8.8
Address: 8.8.8.8#53

Non-authoritative answer:
Name: www.google.com
Address: 216.58.221.196

➜ ~ # host www.google.com
www.google.com has address 216.58.196.228
www.google.com has IPv6 address 2404:6800:400a:806::2004