Vpn Hosts app helping developers customized hosts(/system/etc/hosts) File on no root android devices.
The Virtual Hosts app can also be used to do block ads.(as ad blocker)

example Hosts File: https://raw.githubusercontent.com/x-falcon/Virtual-Hosts/master/example_hosts.txt
features:

1Use Hosts File on android devices with out root.So that can custom domain name
resolution records.
2support wildcard DNS records.for example:

127.0.0.1 a.com　　|
127.0.0.1 b.a.com　 | => 127.0.0.1 .a.com
127.0.0.1 c.b.a.com |

3full support ipv6 network support change AAAA (Ipv6 Address) DNS records. example:

:: 　b.com　　
2001:A124::6666　c.com
fc00:aaaa:bbbb:cccc:1111:2222:3333:1234　 www.d.com
fe80::2　c.b.a.com

4maybe more power saving when the records too muchbecause can use wildcard DNS records. such as google domain only need one record ".google.com " that can represents all the subdomains.

Usage:

1make the hosts file by self or get from Internet.
2put the file into your phone anywhere you can choose or accessible.
3start app. click the blue button where at the bottom of the scree then select the hosts file which you make or get from Internet.
4 click the big white button which like a switch for running and the white button will turn green.
5enjoy it!

Tips:
The app can free down from github.
https://github.com/x-falcon/Virtual-Hosts/releases/download/1.6.4/app-Github-release.apk

If useful，please purchase from google play for support developersthank you.