I blocked this weeks ago, no ADS since then.
Router block to host file block is useless.
This is why I blocked the network with my Comodo firewall (and you SHOULD be using Comodo).
Do this in Comodo.
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Security Settings >
Firewall >
Global Rules > (
Right click and ADD a new rule) >
Action: Block
Protocol: TCP or UDP
Direction: In or Out
Description: MTNL #1
Source Address: Type IPv4
203.094.243.040
Create another rule similar to this and change description to MTNL #2, then change the source IP to
203.094.243.063
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There you go. Blocked. No more ADS, no need to mess with host files or router. Takes less than 15 seconds.
Just an FYI, if you have NoScript in Firefox installed, it will show you the IP of these ADS on every page. You can block them if they change the IP's in the future, but I don't think they will.