In this tutorial, we will use the library to build a simple domain lookup tool. With this tool, we can retrieve domain name information such as the creation date, expiration date, address, country of the owner, and more. whois If you are ready, let's get started. WHOIS installation Whois is a query and response protocol that allows you to find the domain name information. Whois has a python library named . python-whois To install python-whois via , run the following command: pip pip install python-whois # 👉️ Python 2

pip3 install python-whois # 👉️ Python 3 How to use WHOIS It's pretty simple to use WHOIS. In the following example, we'll get all information about hackernoon.com import whois # 👉️ Import whois module

dm_info =  whois.whois("hackernoon.com") # 👉️ Get Domain Info

print(dm_info) The whois() method returns information about the given domain name. Output: {
  "domain_name": [
    "HACKERNOON.COM",
    "hackernoon.com"
  ],
  "registrar": "GoDaddy.com, LLC",
  "whois_server": "whois.godaddy.com",
  "referral_url": null,
  "updated_date": [
    "2022-11-03 15:45:14",
    "2022-04-04 12:33:12"
  ],
  "creation_date": [
    "2016-04-03 23:11:48",
    "2016-04-03 18:11:48"
  ],
  "expiration_date": [
    "2023-04-03 23:11:48",
    "2023-04-03 18:11:48"
  ],
  "name_servers": [
    "AMBER.NS.CLOUDFLARE.COM",
    "GUY.NS.CLOUDFLARE.COM"
  ],
  "status": [
    "clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited",
    "clientRenewProhibited https://icann.org/epp#clientRenewProhibited",
    "clientTransferProhibited https://icann.org/epp#clientTransferProhibited",
    "clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited"
  ],
  "emails": "abuse@godaddy.com",
  "dnssec": "unsigned",
  "name": "Registration Private",
  "org": "Domains By Proxy, LLC",
  "address": [
    "DomainsByProxy.com",
    "2155 E Warner Rd"
  ],
  "city": "Tempe",
  "state": "Arizona",
  "registrant_postal_code": "85284",
  "country": "US"
} Now, let's see how to get specific information. print("Registar:", dm_info.registrar) # 👉️ Get Registar

print("Creation Date:", dm_info.creation_date) # 👉️ Get Creation Date

print("Expiration Date:", dm_info.expiration_date) # 👉️ Expiration Date

print("Country:", dm_info.country) # 👉️ Get Country Output: Registar: GoDaddy.com, LLC
Creation Date: 2016-04-03 23:11:48
Expiration Date: 2023-04-03 23:11:48
Country: US Note that! You will get the error if the domain name is not registered. For example: dm_info = whois.whois("xysqsw.com") # 👉️ xysqsw.com  isn't registered Output: whois.parser.PywhoisError: No match for "XYSQSW.COM" However, we need to use try and except to handle the error. try:
    dm_info =  whois.whois("xysqsw.com") # 👉️ Get Domain Info
    print(dm_info)
except:
    print("Something Went Wrong") Output: Something Went Wrong If you want to learn how to check the domain's availability, Check out . Check if the domain is available Build a domain lookup After learning how to use the whois library, let's write a simple domain lookup function. This function will validate the given domain name and return the information of the domain. First, we need to install the validators' packages. pip install validators # 👉️ Python 2

pip3 install validators # 👉️ Python 2 is a validation library used to validate email, date, IBAN, and ... Validators domain Now, let's write the domain lookup function. import validators # pip install validators

def domain_lookup(dm):

    if validators.domain(dm): # Check if Domain is Valid

        try:
            dm_info =  whois.whois(dm) # 👉️ Get Domain Info
            return dm_info

        except:
            return f"{dm} is not registered"

    else:
        return f"Enter a valid domain" Test our function with a registered domain. d_i = domain_lookup("facebook.com")

print(d_i) Output: {
  "domain_name": "FACEBOOK.COM",
  "registrar": "RegistrarSafe, LLC",
  "whois_server": "whois.registrarsafe.com",
  "referral_url": null,
  "updated_date": "2022-01-26 16:45:06",
  "creation_date": "1997-03-29 05:00:00",
  "expiration_date": "2031-03-30 04:00:00",
  "name_servers": [
    "A.NS.FACEBOOK.COM",
    "B.NS.FACEBOOK.COM",
    "C.NS.FACEBOOK.COM",
    "D.NS.FACEBOOK.COM"
  ],
  "status": [
    "clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited",
    "clientTransferProhibited https://icann.org/epp#clientTransferProhibited",
    "clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited",
    "serverDeleteProhibited https://icann.org/epp#serverDeleteProhibited",
    "serverTransferProhibited https://icann.org/epp#serverTransferProhibited",
    "serverUpdateProhibited https://icann.org/epp#serverUpdateProhibited",
    "serverUpdateProhibited https://www.icann.org/epp#serverUpdateProhibited",
    "clientDeleteProhibited https://www.icann.org/epp#clientDeleteProhibited",
    "clientTransferProhibited https://www.icann.org/epp#clientTransferProhibited",
    "serverDeleteProhibited https://www.icann.org/epp#serverDeleteProhibited",
    "serverTransferProhibited https://www.icann.org/epp#serverTransferProhibited",
    "clientUpdateProhibited https://www.icann.org/epp#clientUpdateProhibited"
  ],
  "emails": [
    "abusecomplaints@registrarsafe.com",
    "domain@fb.com"
  ],
  "dnssec": "unsigned",
  "name": "Domain Admin",
  "org": "Meta Platforms, Inc.",
  "address": "1601 Willow Rd",
  "city": "Menlo Park",
  "state": "CA",
  "registrant_postal_code": "94025",
  "country": "US"
} Unregistered domain: d_i = domain_lookup("blabla123.com")

print(d_i) Output: blabla123.com is not registered Invalid Domain: d_i = domain_lookup("blabla123 h.com")

print(d_i) Output: Enter a valid domain Conclusion Excellent! You have successfully learned how to retrieve information from any domain using WHOIS. Feel free to leave comments if you have any questions or suggestions. Happy Codding!

Python - Build a Domain Lookup Tool

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