Linked Questions

1
vote
1answer
202 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
3answers
880 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, ...
5
votes
2answers
2k views

DNS subdomain (child) NS records

this is my first post here, so excuse me if I don't post everything quite right. anyway, my question is about zone files in parent and child zones. if we have example.com we would setup things ...
2
votes
0answers
36 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 ...
0
votes
1answer
182 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 ...
1
vote
0answers
38 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 ...
1
vote
0answers
1k 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 ...
4
votes
3answers
4k 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 ...
-4
votes
1answer
354 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
1answer
1k 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 ...
25
votes
2answers
8k 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% ...
3
votes
0answers
872 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
1answer
898 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 ...
29
votes
3answers
17k 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 ...
1
vote
2answers
370 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 ...

15 30 50 per page