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Search TCP / UDP Port Assignment Database

Enter port number or text string:
Search database:

Search result for: 53

From: [IANA] [NMAP] [WG] [WP] [SANS]

Service Port Prot. Description Notes
domain 53 tcp Domain Name Server [IANA]
domain 53 udp Domain Name Server [IANA]
domain 53 tcp # Domain Name Server [NMAP]
domain 53 udp # Domain Name Server [NMAP]
53 tcp/udp Access Gateway 5.0 - DNS [WG] DNS name resolution
53 tcp/udp AppController - DNS [WG] DNS name resolution
53 tcp CloudStack/CloudPlatform - Console Proxy VM [WG] Console Proxy VM to DNS
53 tcp CloudStack/CloudPlatform - DNS [WG] CloudStack Management Server to DNS
53 tcp CloudStack/CloudPlatform - SSVM [WG] SSVM to DNS
53 tcp CloudStack/CloudPlatform - Virtual Router [WG] Virtual Router to DNS
domain 53 tcp/udp DNS [WG]
53 tcp DNS - Internet Connection Firewall/Internet Connection Sharing [WG]
domain 53 tcp/udp domain name services (such as BIND) [WG]
53 udp ESX 3.x: from: ESXi/ESX Host - to: DNS Server [WG] DNS
53 udp ESX 4.x: from: ESXi/ESX Host - to: DNS Server [WG] DNS
53 udp ESXi 3.x: from: ESXi/ESX Host - to: DNS Server [WG] DNS
53 udp ESXi 4.x: from: ESXi/ESX Host - to: DNS Server [WG] DNS
53 udp ESXi 5.x: from: ESXi 5.x - to: DNS Server [WG] DNS Client
53 tcp/udp NetScaler / Access Gateway Enterprise Edition - DNS [WG] DNS name resolution
53 tcp/udp Previous versions of Access Gateway Standard / Advanced Edition - DNS [WG] DNS name resolution
53 udp vCenter 2.5.x: from: vCenter Server - to: DNS Server [WG] DNS lookups
53 udp vCenter 4.x: from: vCenter Server - to: DNS Server [WG] DNS lookups
53 udp vCenter 5.x: from: vCenter Server - to: DNS Server [WG] DNS lookups
53 tcp/udp XenServer - Infrastructure [WG] DNS
53 tcp/udp Domain Name System (DNS) [WP] Official
domain 53 tcp Domain Name Server [SANS]
domain 53 udp Domain Name Server [SANS]

How to use:

To search by port enter a number in the range between 0 and 65535. To search service / protocol description by keyword enter a text string at least three characters long. Wild-card (*) is supported if it is the last character in the search string. Alternatively, select a port from one of the ranges listed below.

Port range: 0-1023

0-99
100-199
200-299
300-399
400-499
500-599
600-699
700-799
800-899
900-999
1000-1023

0-1023 - Well-known or System Ports
1024-49151 - Registered or User Ports
49152-65535 - Dynamic/Private or Ephemeral Ports

Information Sources:
[IANA]  IANA Service Name and Transport Protocol Port Number Registry
[NMAP]  NMAP.org well known service port numbers
[WG]  WintelGuy.com port number database compiled from many different sources, including Microsoft, VMWare, Citrix, Oracle, etc.
[WP] Wikipedia - List of TCP and UDP port numbers
[SANS]  SANS Inst. / DShield service list