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Difference between revisions of "DNS"
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== DNS Servers Open to Public Query == | == DNS Servers Open to Public Query == | ||
{| | This is '''not''' an exhaustive list of publicly accessible DNS servers. There are more, those listed below are a subset, and may be better or worse than others. | ||
|- | |||
{|class="vwikitable" | |||
|- | |||
! IP Address !! Provider !! Location | ! IP Address !! Provider !! Location | ||
|- | |- | ||
| 8.8.8.8 || Google | | 8.8.8.8 || [https://developers.google.com/speed/public-dns/ Google] || Global (routed via [http://en.wikipedia.org/wiki/Anycast Anycast]) | ||
|- | |- | ||
| 8.8.4.4 || Google | | 8.8.4.4 || [https://developers.google.com/speed/public-dns/ Google] || Global (routed via [http://en.wikipedia.org/wiki/Anycast Anycast]) | ||
|- | |- | ||
| 156.154.70.1 || DNSadvantage | | 156.154.70.1 || [http://www.dnsadvantage.com/index.html DNSadvantage] || [Global http://www.dnsadvantage.com/dnsadv/node_locations.html] | ||
|- | |- | ||
| 156.154.71.1 || DNSadvantage | | 156.154.71.1 || [http://www.dnsadvantage.com/index.html DNSadvantage] || [Global http://www.dnsadvantage.com/dnsadv/node_locations.html] | ||
|- | |- | ||
| 208.67.220.220 || OpenDNS || Global, mainly US (routed via [http://en.wikipedia.org/wiki/Anycast Anycast]) | | 208.67.220.220 || [http://www.opendns.com/ OpenDNS] || [Global, mainly US http://www.opendns.com/technology/network-map/] (routed via [http://en.wikipedia.org/wiki/Anycast Anycast]) | ||
|- | |- | ||
| 208.67.220.222 || OpenDNS || Global, mainly US (routed via [http://en.wikipedia.org/wiki/Anycast Anycast]) | | 208.67.220.222 || [http://www.opendns.com/ OpenDNS] || [Global, mainly US http://www.opendns.com/technology/network-map/] (routed via [http://en.wikipedia.org/wiki/Anycast Anycast]) | ||
|- | |- | ||
| 4.2.2.1 || | | 4.2.2.1 || Level 3 || Probably global (routed via [http://en.wikipedia.org/wiki/Anycast Anycast]) | ||
|- | |- | ||
| 4.2.2.2 | | 4.2.2.2 <ref name="4.2.2.2" /> || Level 3 || Probably global (routed via [http://en.wikipedia.org/wiki/Anycast Anycast]) | ||
|- | |- | ||
| 194.72.9.34 || [http://www.bt.com/ BT] || UK | | 194.72.9.34 || [http://www.bt.com/ BT] || UK | ||
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NSLookup is a Name Server Lookup/Query tool which exists in both Unix and Windows distributions, and generally speaking, functionaly the same regardless of which version you're using. To start, run <code>nslookup</code> from the command line. | NSLookup is a Name Server Lookup/Query tool which exists in both Unix and Windows distributions, and generally speaking, functionaly the same regardless of which version you're using. To start, run <code>nslookup</code> from the command line. | ||
{| | {|class="vwikitable" | ||
|- | |- | ||
! Command !! Description | ! Command !! Description | ||
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microsoft.com MX preference = 10, mail exchanger = mail.messaging.microsoft.com | microsoft.com MX preference = 10, mail exchanger = mail.messaging.microsoft.com | ||
> | > | ||
== Notes == | |||
<references> | |||
<ref name="4.2.2.2">For further info on 4.2.2.2 see http://www.tummy.com/Community/Articles/famous-dns-server/</ref> | |||
</references> | |||
[[Category:Networking]] | |||