# Root domains

### Basic

```bash
# https://github.com/OWASP/Amass 
amass intel -d domain.com -whois 

# Search on Google
https://google.com/search?q=united+airlines 

# Analyze owners on domainbigdata
https://iqwhois.com/
```

### Reverse whois

```
https://viewdns.info/reversewhois/?q=United+Airlines
https://tools.whoisxmlapi.com/reverse-whois-search
```

### ASN

```bash
https://bgp.he.net/search?search%5Bsearch%5D=united+airlines&commit=Search 
whois -h whois.radb.net -- '-i origin AS11535' | grep -Eo "([0-9.]+){4}/[0-9]+" | uniq 
whois -h whois.radb.net -- '-i origin AS20461' | grep -Eo "([0-9.]+){4}/[0-9]+" | uniq | mapcidr -silent | dnsx -ptr -resp-only -retry 3 -silent
```

### Favicon

```bash
# https://github.com/pielco11/fav-up
python3 favUp.py -ff ~/favicon.ico --shodan-cli 

# https://github.com/devanshbatham/FavFreak
cat urls.txt | python3 favfreak.py 

# https://faviconhasher.herokuapp.com/

# https://www.shodan.io/search?query=http.favicon.hash%3A-382492124

# https://github.com/edoardottt/favirecon
favirecon -u https://target.com/ -v
```

### Google Analytics ID

```bash
https://builtwith.com/relationships/united.com
https://builtwith.com/relationships/tag/UA-29214177
https://api.hackertarget.com/analyticslookup/?q=united.com
https://api.hackertarget.com/analyticslookup/?q=UA-16316580
```

### DNS manual recon

```bash
dnsrecon -d www.example.com -a 
dnsrecon -d www.example.com -t axfr
dnsrecon -d www.example.com -g
dnsrecon -d www.example.com -D /usr/share/wordlists/subdomains.txt -t brt

dig www.example.com + short
dig www.example.com MX
dig www.example.com NS
dig www.example.com> SOA
dig www.example.com ANY +noall +answer
dig -x www.example.com
dig -4 www.example.com (For IPv4)
dig -6 www.example.com (For IPv6)
dig www.example.com mx +noall +answer example.com ns +noall +answer
dig -t AXFR www.example.com
dig axfr @10.11.1.111 example.box

dnsenum 10.11.1.111
```

### Reverse IP search

```bash
# Get domain from IP
# https://reverse-ip.whoisxmlapi.com/
# https://github.com/projectdiscovery/dnsx
cat ips.txt | dnsx -ptr -resp-only -silent -retry 3
```

### TLD bruteforcing

```
# TLD bruteforcing tool
https://github.com/Sybil-Scan/TLDbrute
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://www.pentest-book.com/recon/domain-enum.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.