This content originally appeared on DEV Community 👩💻👨💻 and was authored by Duc Tran
LOOKUP
LOOKUP is a simple tool check IP informations, CNAME, NS(Name Server), A records, MX records, TXT records with Go.
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Full source code in here
Fundamental
CNAME: is a Canonical Name Record or Alias Record. A type of resource record in the Domain Name System (DNS), that specifies that one domain name is an alias of another canonical domain name.
A and AAAA Record: An A and AAAA record are actually primary DNS records. They associate a domain name with a specific IP address.
TXT Record : A TXT record (short for text record) is a type of resource record in the Domain Name System (DNS) used to provide the ability to associate arbitrary text with a host or other name, such as human readable information about a server, network, data center, or other accounting information.
MX(Mail Exchanger) Record: A mail exchanger record (MX record) specifies the mail server responsible for accepting email messages on behalf of a domain name. It is a resource record in the Domain Name System (DNS). It is possible to configure several MX records, typically pointing to an array of mail servers for load balancing and redundancy.
NameServer: Nameserver is a server on the internet specialized in handling queries regarding the location of a domain name's various services. Nameservers are a fundamental part of the Domain Name System (DNS). They allow using domains instead of IP addresses.
Install
First, install golang.
Then, clone from soucre code and setup:
git clone https://github.com/ductnn/lookup.git
cd lookup
go get
Usage
Without docker
Run command:
go run main.go
# Enter domain you want to check.
# Example
google.com
Check result:
CNAME
TXT records
IP informations
Name Servers
MX records
With docker
Check Dockerfile and build with command:
docker build -t <your-image> -f Dockerfile .
or pulls my image in here, and run container
docker run -it ductn4/loo
With file binary
You can down file binary in here for running tool:
# Download file bin to your local
chmod +x loo
./loo
# And check result ...
Test with facebook.com:
➜ bin git:(master) ✗ ./loo
/\/| __ /\/| __
|/\/ /_/ |/\/ /_/
___ ___
/ _ \ / _ \
| (_) | | (_) |
\___/ \___/
Enter subdomain or domain name:
facebook.com
CNAME
+---------------------+--------------+---------------+
| DOMAIN OR SUBDOMAIN | DOMAIN | CNAME |
+---------------------+--------------+---------------+
| facebook.com | facebook.com | facebook.com. |
+---------------------+--------------+---------------+
TXT records
+--------------+----------------------------------------------------------------------+
| DOMAIN | TXT RECORDS |
+--------------+----------------------------------------------------------------------+
| facebook.com | google-site-verification=A2WZWCNQHrGV_TWwKh6KHY90tY0SHZo_RnyMJoDaG0s |
+ +----------------------------------------------------------------------+
| | v=spf1 |
| | redirect=_spf.facebook.com |
+ +----------------------------------------------------------------------+
| | google-site-verification=sK6uY9x7eaMoEMfn3OILqwTFYgaNp4llmguKI-C3_iA |
+ +----------------------------------------------------------------------+
| | google-site-verification=wdH5DTJTc9AYNwVunSVFeK0hYDGUIEOGb-RReU6pJlY |
+--------------+----------------------------------------------------------------------+
IP Informations
+--------------+------------------------------------+------------------+------------------+------------------------+
| DOMAIN | IP | CITY AND COUNTRY | LOCATION | ORGANIZATION |
+--------------+------------------------------------+------------------+------------------+------------------------+
| facebook.com | 31.13.75.35 | Hong | 22.2783,114.1747 | AS32934 Facebook, |
| | | Kong, HK | | Inc. |
+ +------------------------------------+------------------+------------------+ +
| | 2a03:2880:f15a:83:face:b00c:0:25de | Dublin, | 53.3331,-6.2489 | |
| | | IE | | |
+--------------+------------------------------------+------------------+------------------+------------------------+
Name Servers
+--------------+--------------------+
| DOMAIN | NAME SERVERS |
+--------------+--------------------+
| facebook.com | b.ns.facebook.com. |
+ +--------------------+
| | d.ns.facebook.com. |
+ +--------------------+
| | a.ns.facebook.com. |
+ +--------------------+
| | c.ns.facebook.com. |
+--------------+--------------------+
MX Records
+--------------+-----------------------------+
| DOMAIN | MX RECORDS |
+--------------+-----------------------------+
| facebook.com | smtpin.vvv.facebook.com. |
| | 10 |
+--------------+-----------------------------+
Okkk! Thank you for reading 😍 🤩 🥳
This content originally appeared on DEV Community 👩💻👨💻 and was authored by Duc Tran
Duc Tran | Sciencx (2022-09-20T16:49:09+00:00) Simple tool check informations from domain name with golang. Retrieved from https://www.scien.cx/2022/09/20/simple-tool-check-informations-from-domain-name-with-golang/
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