Linked Questions
19 questions linked to/from What is the role of NS records at the apex of a DNS domain?
70
votes
7
answers
121k
views
DNS A vs NS record
I'm trying to understand DNS a bit better, but I still don't get A and NS records completely.
As far as I understood, the A record tells which IP-address belongs to a (sub) domain, so far it was ...
205
votes
5
answers
154k
views
What is a glue record?
This is a Canonical Question about DNS glue records.
What exactly (but briefly) is a DNS glue record? Why are they needed and how do they work?
34
votes
3
answers
23k
views
Is dig +trace always accurate?
When the accuracy of a DNS cache is in question, dig +trace tends to be the recommended way of determining the authoritative answer for an internet facing DNS record. This seems to be particularly ...
9
votes
3
answers
10k
views
What is the correct behaviour when Nameservers Change
I have been having some issues with a certain network supplier over unchanged nameservers making my site invisible to their customers. I wouldnt be bothered except that they are one of the largest ...
7
votes
3
answers
8k
views
Is there any way to tell the TTL on root name server DNS records?
I am currently migrating a DNS zone from one DNS server provider to another. I am trying to estimate how long it will take for the change to propagate, and to understand what the delay might be if I ...
3
votes
3
answers
3k
views
Why do name servers occur in whois as well as DNS?
I am trying to understand why the name servers for a domain occurs in both whois information and DNS information.
For example, the following whois output shows that ns1.google.com, ns2.google.com, ...
25
votes
2
answers
11k
views
Some DNS servers in the world giving wrong IP address for our domain?
Our domain, grahamhancock.com is being wrongly resolved by a few people around the world, but it resolves correctly for most people.
When I run through a list of free open DNS providers, about 90% ...
9
votes
2
answers
4k
views
DNS subdomain (child) NS records
If we have example.com we would setup things something like this:
$ORIGIN example.com.
@ 1D IN SOA ns1.example.com. hostmaster.example.com. (
2002022401 ; serial
...
1
vote
2
answers
453
views
Under which circumstances will the NS records at the apex of a zone be queried?
At what point do the NS records defined at the apex of a zone are queried during normal operations?
From what I've researched these records are used by:
DNS NOTIFY, for the master to signal slave ...
1
vote
2
answers
582
views
How to delegate NS for the apex?
We have a registered domain (example2.com) that has the company's name servers registered against it (ns1.example.com, ns2.example.com) at the registrar.
We would like to "delegate" the DNS ...
6
votes
1
answer
2k
views
Why does dig +trace seem to ignore the DNS glue records?
Here are my questions:
Why does dig +trace ignore the Glue Records?
Is this behavior specific to dig or dig +trace, or does a recursive name server also "manually verify" glue records it receives?
...
1
vote
1
answer
716
views
When are NS records at the apex of a DNS domain queried?
Let's say, that I have a following example.com zone:
$TTL 120
@ IN SOA ns1 hostmaster (2018041509
300
...
1
vote
1
answer
1k
views
Correctly calculate DNS TTL from host -a output
I'm trying to figure out how TTLs are handled in DNS (in the end I'm trying to figure out the fastest way to switch over a domain), but somehow I'm stuck in interpreting TTL values.
For example I ...
0
votes
1
answer
624
views
Nameservers chaining
I pointed my domain nameservers (in the regristrar) to a DNS provider (Cloudflare). Then I created two NS records pointing to my hoster nameserver.
Registrar -> DNS provider -> hoster.
But it doesn't ...
-3
votes
1
answer
466
views
How to configure Separate Domain registrar, Web host and Email host settings? [duplicate]
Let's say we have a domain example.com
Domain registrar : NAME.COM
Web Host : IPAGE.COM
Email Host : GMAIL (Google Apps)
My understanding is that:
I should add MX records to use Gmail (clear)
I ...
-3
votes
1
answer
2k
views
DNS lookup takes 10 plus seconds [closed]
DNS lookup of www.duckdns.org takes 10 plus seconds. Is this my internet provider's DNS issue?
Here is the output of host command using my provider DNS and Google DNS:
$ time host www.duckdns.org
...
7
votes
0
answers
3k
views
Registrar nameservers vs. NS records for bare domain?
OK, I'm a bit new to DNS, but I'm having some trouble finding the answer to this. I have a domain registered at google domains. As with other registrars, you have access to their free DNS, and ...
2
votes
0
answers
57
views
Role of Authoritative NS record in bind9 compared with Non-Authoritative NS record in Registrar [duplicate]
Whenever we register a new domain name from a Registrar, we need to tell them what is the nameserver by providing them the dns server IP address.
But in the same time in the zone file of our dns ...
1
vote
0
answers
43
views
How works the NS record definition in DNS section at CloudFlare? [duplicate]
In domain configuration at CloudFlare, the DNS section stores the record definitions. What is the exact purpose of NS record here? If configured, it shows something like:
Type | Name | Value ...