5 Simple program in Python in Jupiter Not Book for Pen Teater

Quick overview

Field	Detail
Topic	records
Guide	5 Simple program in Python in Jupiter Not Book for Pen Teater
Tags	records, subdomain, aaaa, results, dns, subdomains
Length	About 312 words
Practice rule	Authorized labs only — stay ethical

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5 Simple program in Python in Jupiter Not Book for Pen Teater 

 import csv
import dns.resolver
import dns 

def get_possible_subdomains(domain, output_file="apple.csv"):
    subdomains = []
    with open("apple.txt") as f:
        subdomains = [line.strip() + "." + domain for line in f]

    results = []
    save_counter = 0

    print(f"[+] Resolved subdomains for {domain}:")
    for subdomain in subdomains:
        try:
            # Skip subdomains with empty labels
            if subdomain.count('.') > 1:
                # Resolve A (IPv4) records
                a_records = [str(answer) for answer in dns.resolver.resolve(subdomain, 'A')]

                # Resolve AAAA (IPv6) records
                aaaa_records = [str(answer) for answer in dns.resolver.resolve(subdomain, 'AAAA')]

                results.append({'Subdomain': subdomain, 'A Records': ', '.join(a_records), 'AAAA Records': ', '.join(aaaa_records)})

                print(f"  {subdomain} resolved to A: {', '.join(a_records)}, AAAA: {', '.join(aaaa_records)}")

                save_counter += 1
                if save_counter >= 1:
                    with open(output_file, 'a', newline='') as csvfile:
                        fieldnames = ['Subdomain', 'A Records', 'AAAA Records']
                        writer = csv.DictWriter(csvfile, fieldnames=fieldnames)

                        # Check if the file is empty, and write header if necessary
                        if csvfile.tell() == 0:
                            writer.writeheader()

                        writer.writerows(results)
                    
                    results = []  # Reset the results list
                    save_counter = 0

        except dns.name.EmptyLabel:
            print(f"  {subdomain} has an empty label, skipping.")
        except dns.resolver.NoAnswer:
            pass
        except dns.resolver.NXDOMAIN:
            pass
        except Exception as e:
            print(f"  Error resolving {subdomain}: {str(e)}")

    if results:
        with open(output_file, 'a', newline='') as csvfile:
            fieldnames = ['Subdomain', 'A Records', 'AAAA Records']
            writer = csv.DictWriter(csvfile, fieldnames=fieldnames)

            # Check if the file is empty, and write header if necessary
            if csvfile.tell() == 0:
                writer.writeheader()

            writer.writerows(results)

    print(f"Results saved to {output_file}")

if __name__ == '__main__':
    domain = input("Enter a domain name:")
    get_possible_subdomains(domain)

Frequently asked questions

What is this guide about records?

5 Simple program in Python in Jupiter Not Book for Pen Teater explains practical, ethical notes on records. Use it as a structured walkthrough — then practice only in authorized labs.

Who is this records article for?

Readers who want clear, street-level guidance on records without hype. Beginners and intermediate practitioners both benefit.

How do I practice records safely?

Stay in scope: systems you own or have written permission to test. Keep notes, verify findings, and never attack live targets without authorization.