Playing with the dnstraceroute tool (see on GitHub ), I noticed that it is a common practice for service providers to hijack and redirect DNS traffic to their local DNS servers. So if you thought you were using Google’s Public DNS Server or Verisign's , you may want to think twice.

What is DNS hijacking and How It Works? - PureVPN Blog DNS hijacking is one such method hackers use to carry out such clandestine acts. DNS based attack isn’t something an average user would know about. Therefore, to learn more about what DNS hijacking is, you first need to understand what a DNS is and what it does. Let’s Take a Quick Overview of DNS Technology Hijacking | OpenVPN According to Smarty DNS, recognizing signs of a DNS hijack can be as simple as noticing when websites are slow to load, there is an abnormal amount of pop-ups, and suspicious computer alerts about malware and viruses. For less obvious cases, you can use the ping command, check your router, or use a reputable website to verify your DNS. Avast Home Network Security: Troubleshooting hijacked ASUS Ensure that all DNS server records are blank, or set to 0.0.0.0, i.e. IP with zero values (this applies also for static DNS records, if available, in your router's LAN or DHCP settings when a local DHCP Server is Enabled). - otherwise -

DNS hijacking can alter the advertisements you see while browsing. If you start seeing inappropriate ads, such as porn ads, on normal pages that you visit, it might be a sign that you're in trouble. Furthermore, advertisements can be modified to trick you.

DNS Hijacking. Every single time you type an address into your address bar your internet connected device it makes a request to a DNS server to get the actual (iP) Internet address. More and more malware is targeting your DNS requests so that you use a malicious DNS server instead of … DNSsy - DNS Test and Check - Free DNS Report

DNS Test and Check - Free DNS Report DNSsy Report The DNS report will test some key points of the DNS setup for a given domain. It provides details of problems encountered, and also gives recommendations for performance and security enhancements. It also performs some basic mail and http server checks.

The DNS Check test will run a comprehensive DNS Report for your domain. A DNS lookup is done directly against the root servers (or TLD Servers). Then we query each name server to make sure your DNS Servers all respond, measure their performance and audit the results against common best practices. What is DNS Hijacking? How can I prevent DNS Hijacking