Category: DNS

DNS Root Servers
article #1017, updated 89 days ago

As of this writing, the current authoritative list, from here:

https://www.iana.org/domains/root/servers

is:

a.root-servers.net 198.41.0.4 2001:503:ba3e::2:30 VeriSign, Inc.
b.root-servers.net 192.228.79.201 2001:500:84::b University of Southern California (ISI)
c.root-servers.net 192.33.4.12 2001:500:2::c Cogent Communications
d.root-servers.net 199.7.91.13 2001:500:2d::d University of Maryland
e.root-servers.net 192.203.230.10 2001:500:a8::e NASA (Ames Research Center)
f.root-servers.net 192.5.5.241 2001:500:2f::f Internet Systems Consortium, Inc.
g.root-servers.net 192.112.36.4 2001:500:12::d0d US Department of Defense (NIC)
h.root-servers.net 198.97.190.53 2001:500:1::53 US Army (Research Lab)
i.root-servers.net 192.36.148.17 2001:7fe::53 Netnod
j.root-servers.net 192.58.128.30 2001:503:c27::2:30 VeriSign, Inc.
k.root-servers.net 193.0.14.129 2001:7fd::1 RIPE NCC
l.root-servers.net 199.7.83.42 2001:500:9f::42 ICANN
m.root-servers.net 202.12.27.33 2001:dc3::35 WIDE Project

Categories:   DNS   Internet Networking

==============

Free Public DNS Servers
article #883, updated 149 days ago

Google is a good place to start:

8.8.8.8
8.8.4.4

OpenDNS is often good too:

208.67.220.220
208.67.222.222
208.67.220.222
208.67.222.220

And one new to us, is Level 3. Level 3 provides DNS to most ISPs in the U.S.A., and does provide geo-routing for speed and compatibility.

209.244.0.3
209.244.0.4

Categories:   DNS   

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Installing nslookup on Linux
article #1008, updated 149 days ago

Increasingly, nslookup is not installed by default in major Linux distros. On Arch-based and Debian-based distros, it’s in package dnsutils,

Categories:   DNS   Linux OS-level Issues

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DNS, Whois, et cetera
article #12, updated 312 days ago

A great place for general DNS lookup info:

http://www.dnsstuff.com/

One for WHOIS (use the little submit box in the far upper-right corner):

http://www.whois.com

And one for info about IP addresses:

http://www.arin.net/index.shtml

Categories:   DNS   Internet Networking

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Opt out of the Cox special DNS
article #884, updated 525 days ago

By default, Cox will DHCP to your systems some DNS servers which behave like OpenDNS, i.e., if there is a DNS name miss, the servers will show a hit which is a Cox search page. This can confuse a lot of things. Cox has provided a way around this:

http://www.cox.com/residential/support/internet/article.cox?articleId=e14ee070-6448-11df-ccef-000000000000

for residential at least, it uses these two IPs as static DNS:

68.105.28.13
68.105.29.13

and these do appear to be noticeably faster!

Categories:   DNS   

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CenturyLink DNS servers
article #881, updated 528 days ago

A great place to find them:

http://internethelp.centurylink.com/internethelp/dns-ctl.html

Categories:   DNS   

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SPF for Constant Contact
article #873, updated 543 days ago

Recently it has come to light that the following need to be added to SPF records for email-enabled domains using Constant Contact:

include:ccsend.com include:constantcontact.com include:confirmedcc.com

Categories:   Email   DNS

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DNS Root Server IPs
article #780, updated 803 days ago

Here is the canonical source:

http://www.internic.net/zones/named.root

Categories:   DNS   

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'dig' command to pull up all records for a single hostname
article #597, updated 1302 days ago

To pull up a list of all DNS records for a single hostname:

dig +nocmd yourdomain.com any +multiline +noall +answer

Categories:   DNS   

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Web/GUI front ends for BIND
article #287, updated 2182 days ago

Here is an interesting list:

http://www.debianadmin.com/bind-dns-server-web-interfacefrontend-or-gui-tools.html

But the best may be here:

http://sourceforge.net/projects/smbind/

Categories:   DNS   Internet Networking