DNS - Domain Name System
Wikipedia Link: https://en.wikipedia.org/wiki/Domain_Name_System
Portlist
| Port | Description |
|---|---|
| 53/udp | DNS |
| 53/tcp | DNS Zone Transfers |
DNS Hierarchy and Management
DNS Zones
| Zone | Description |
|---|---|
| Root Zone | The authoritative name servers that serve the DNS root zone, commonly known as the “root servers”, are a network of hundreds of servers in many countries around the world. They are configured in the DNS root zone as 13 named authorities. |
| Top Level Domain (TLD) | |
| Second Level Domain (SLD) | |
| Subdomains or Hostnames |
ROOT Zone Nameservers
Link: https://www.iana.org/domains/root/servers
Top Level Domains (TLDs)
| Type | Link |
|---|---|
| List of TLDs | https://data.iana.org/TLD/tlds-alpha-by-domain.txt |
| TLD WHOIS Information | https://www.iana.org/domains/root/db |
Types of Top Level Domains
| Type | Link to List |
|---|---|
| Generic Top Level Domains (gTLD) | General purpose domains, some of the most common TLDs on the web |
| Country Code Top Level Domains (ccTLD) | Represent specific countries |
| New Top Level Domains (nTLD) | In June of 2012, the Internet Corporation for Assigned Names and Numbers (ICANN) revealed their plans to create a program that would launch hundreds of nTLDs and expand the internet as we know it |
Second Level Domains (SLDs)
Domain Registrars
| Registrar | WHOIS Link |
|---|---|
| InterNIC [.aero, .arpa, .asia, .biz, .cat, .com, .coop, .edu, .info, .int, .jobs, .mobi, .museum, .name, .net, .org, .pro, or .travel] | https://www.internic.net/whois.html |