The following is commonly used to see if other users on the Internet are seeing the same behavior or to check DNS resolution externally after having made updates at a registrar.
1. Browse to http://www.digwebinterface.com/
2. Enter the list of hosts you wish to test under Hostnames or IP addresses:
3. Select All: under Nameservers
4. Click Dig
This test goes out to various recursive servers throughout the Internet and shows current results. The TTL’s might have differing values because records are cached at different times and have different remaining durations. Let us know if you have any questions.