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Questions tagged [reverse-dns]

Part of the the Domain Name System (DNS), a hierarchical naming system for discovering IP Addresses in relation to domain names. The Reverse DNS system takes an IP address and returns its configured domain name.

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Node.JS dns.reverse multiple nameservers

I have an issue with my Node.JS application. For some reason, dns.reverse is only working with the first nameserver specified and ignoring the second one. I have the following piece of code: import Resolver from…
Ivan Zhivolupov
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Reverse tracking ip addresses without using iptools in R

I am aware that ip_to_hostname(STRSXP) in iptools in R does help users to find domain names of IP addresses. However, with my data sized over 300,000,000 entries of DNS IP addresses, ip_to_hostname is not a feasible option due to the hefty load of…
AvidCoder
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Google cannot fetch my Domain or IP, simply cannot be read by google

I have a domain: https://tayninh.gov.vn which config in Microsoft Server (IIS 7.5 & DNS Manager). Ive checked all MX Record/Dns records but not found anythings wrong. It simply cannot be read by google. Please help me.
Tran Hai Nam
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Delegate Nic(.ar) domain name to vps or domain host

I've bought a .com.ar domain from nic.ar, just to claim a domain before starting the publicity campaign of a project. I was trying to setup a MX record to forward emails from the domain to a google account, when realized there's no dns record…
Juan
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Asp.net c# reverse dns lookup to get computer name fail for some client

In order to get the computer name, I used the reverse dns lookup method to get computer name from ip address. However, it works for some client and some client facing error on that when they browse the website publish under iis which run on…
Shi Jie Tio
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AWS EC2 Reverse DNS (PTR) request Failing on good DNS A records

Have searched everywhere and even try the answer here : AWS EC2 Reverse DNS (PTR) Failing I have the domain mydomain.com. The root and www records point to my main server, which runs my website. I am now using a separate AWS ec2 instance to set up…
benjisail
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How to find the CDN that is serving a domain in python?

I am trying to find a way to find the CDN that is serving a certain domain in Python. My idea is to use DNS lookups to read the field CNAME in the response. From that I can map the CNAME response to a certain DNS provider. I am aware of a similar…
Paul
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bind9 configure reverse dns

I have got ip 51.158.89.0/27 and I need to configure reverse dns with bind9. I configure bind9 like this : file named.conf : include "/etc/bind/named.conf.options"; include "/etc/bind/named.conf.local"; include…
Clément Mutz
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How to do DNS lookup of an ip range using shell script

How to do DNS lookup of an IP range using shell script when I do dig -x and provide an ip i get reverser DNS for the respective ip. However if I give range either CIDRs or ip range from & to thats a long manual process, which I want to get it…
SunilGhargaonkar
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Docker Embedded DNS Server not working as expected

In the docker swarm mode, we are running 2 containers, say container1 & container2, and make it join the same overlay network. container 1 is not able to resolve the host for container2 and getting time out error if the external dns is not setup. My…
sunder
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Running A MySQL-Based DNS Server, Which Technology I should chose in 2019?

Hello StackOverflow citizens! Please tell me the up to date method to store DNS data on MySQL Server. ps: I have set up the BIND9 on 2 servers and its running good, I can set up any domain on my own domain-dns, but also I need to store the bid9…
TryastsyaTvoijMatery
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Trouble Understanding Async/Await

Simple example I think. I want to use Express to return a users IP and hostname upon request. But resolving that hostname from the IP is giving me a little bit of trouble. router.get('/', (req, res) => { logRequest(req, res); }); async function…
gh0st
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Not able to send Mail to Gmail dsn=5.0.0, stat=Service unavailable

I am using sendmail to send mail but for gmail i am getting service unavailable maillog Aug 14 09:52:24 ip-172-31-25-85 sendmail[1361]: STARTTLS=client, relay=gmail-smtp-in.l.google.com., version=TLSv1/SSLv3, verify=FAIL,…
Jordan
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Dns.GetHostAddresses returns different results

I have this method for getting IP v4 of an IIS server by its computer name, every time I run this function, it gives me the different result (it alternate between 4 different IP addresses, three of them are in the same range and one is in range…
Rathma
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Nginx directive server_name fails sometimes

I have 7 apps in a server with nginx, configured with server_name directive and listening port 80. Everything is working fine for me and many other people. The thing is that 2 clients have a problem, because when I send a link to them, for example,…
Daniel Casale
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