Forgive my lack of knowledge, I’m completely new to this. I’m learning about various protocols and the general architecture of the Internet. I’m doing a project on the October 21 DDoS attack on Dyn Inc., which shut down a good chunk of the US’ Internet. I’m pretty sure I get the whole “DNS is like … Read More “What do DNS service providers do, exactly? (help a n00b)” »

Hello everyone This morning (danish time) we saw an issue with resolving MX records on all our Office 365 costumers. I do not think it was an issue with Office 365 but rather a DNS issue. We did not manage to figure out what went wrong before the problem was gone. See this post from … Read More “Issue with resolving MX records” »

Hi, we are a SaaS company and currently use GoDaddy as a DNS provider. We would like to move to a different provider (i.e. Dyn, Route 53, etc.). Some of the providers (for pricing purposes) are asking for number of DNS queries per month. From what I can tell, there is no way with GoDaddy … Read More “Q: GoDaddy DNS number of queries per month” »

I created a few internal TLDs within my team’s internal DNS server at work so we can each have an internal domain on our dev machines (yeah yeah, bad idea, possible name conflicts if the TLD is delegated by ICANN, I know). Is there a way that we can run an internal WHOIS server for … Read More “Is it possible to run a private WHOIS server for a custom, internal TLD?” »

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I don’t get it… why do so many major Internet services such as Github, Twitter, SoundCloud and more use only a SINGLE provider of DNS hosting? It used to be common practice that you would use more than one DNS provider for authoritative DNS servers. And DNS is built to do this! It’s easy to … Read More “Q: Why do so many major services use ONLY a single DNS provider? (ex Twitter, Github, SoundCloud)” »

Hiya, Wanted to ask if it is possible to setup separate DNS as a failsafe to my ISP DNS since they have been messing up recently. I have a D-link DIR 868L. I cant seem to find anything about having a router automatically switch DNS settings should it fail to contact the original ISP DNS. … Read More “How to setup alternative DNS in router besides isp” »