Chinese web-proxy on gov.cn domain

Found an interesting Chinese web-proxy on gov.cn domain, which could be used to test website availability from China.
Proxy is IPv6-only but it is able to make IPv4 requests.

http://DOMAIN.ZONE.ipv6.dsjfzj.nanning.gov.cn

Example:
http://icanhazip.com.ipv6.dsjfzj.nanning.gov.cn

Screenshot_20211204_234350-fs8

% Information related to '117.136.0.0/13AS9808'

route:          117.136.0.0/13
descr:          China Mobile communications corporation
origin:         AS9808
mnt-by:         MAINT-CN-CMCC
last-modified:  2011-03-15T01:36:41Z
source:         APNIC

Doesn’t work anymore.