What DNS records do you know?

A (Address Record): Converts a hostname to an IPv4 address.
```
www IN A 192.0.2.1  
```
AAAA (IPv6 Address Record): Converts a hostname to an IPv6 address.
```
www IN AAAA 2001:0db8::1  
```
CNAME (Canonical Name Record): Creates an alias for another domain name.
```
ftp IN CNAME www.example.com.  
```
MX (Mail Exchanger Record): Specifies mail servers responsible for receiving email for the domain.
Creates an alias for another domain name.
```
IN MX 10 mail.example.com.  
IN MX 20 backupmail.example.com.  
```
TXT (Text Record): Contains textual information, often used for domain verification (e.g., SPF, DKIM).
```
IN TXT "v=spf1 include:_spf.google.com ~all"  
```
PTR (Pointer Record): Performs reverse DNS resolution (from IP address to hostname). Used in PTR zones.
```
1.2.0.192.in-addr.arpa IN PTR www.example.com.  
```
SRV (Service Record): Defines the location of services (e.g., ports) for the domain.
```
_sip._tcp IN SRV 0 5 5060 sip.example.com.  
```
NS (Name Server Record): Specifies authoritative name servers for the domain.
```
IN NS ns1.example.com.  
IN NS ns2.example.com.  
```

SOA (Start of Authority Record): Contains primary zone information, including administrator email and zone synchronization parameters.

IN SOA ns1.example.com. hostmaster.example.com. (  
                        2023102701 ; Serial  
                        3600       ; Refresh time  
                        1800       ; Retry time  
                        604800     ; Expire time  
                        86400      ; Minimum TTL  
                        )

CAA (Certification Authority Authorization): Indicates which certification authorities are authorized to issue SSL/TLS certificates for the domain.
```
IN CAA 0 issue "letsencrypt.org"  
```