How to find SQL Server running port?

Question

Yes I read this How to find the port for MS SQL Server 2008?

no luck.

telnet 1433

returns connection failed, so I must s

Answer 1

This is another script that I use:

-- Find Database Port script by Jim Pierce  09/05/2018

USE [master]
GO

DECLARE @DynamicportNo NVARCHAR(10);
DECLARE @StaticportNo NVARCHAR(10);
DECLARE @ConnectionportNo INT;

-- Look at the port for the current connection
SELECT @ConnectionportNo = [local_tcp_port]
 FROM sys.dm_exec_connections
    WHERE session_id = @@spid;

-- Look for the port being used in the server's registry
EXEC xp_instance_regread @rootkey = 'HKEY_LOCAL_MACHINE'
                        ,@key =
                         'Software\Microsoft\Microsoft SQL Server\MSSQLServer\SuperSocketNetLib\Tcp\IpAll'
                        ,@value_name = 'TcpDynamicPorts'
                        ,@value = @DynamicportNo OUTPUT

EXEC xp_instance_regread @rootkey = 'HKEY_LOCAL_MACHINE'
                        ,@key =
                         'Software\Microsoft\Microsoft SQL Server\MSSQLServer\SuperSocketNetLib\Tcp\IpAll'
                        ,@value_name = 'TcpPort'
                        ,@value = @StaticportNo OUTPUT

SELECT [PortsUsedByThisConnection] = @ConnectionportNo
      ,[ServerStaticPortNumber] = @StaticportNo
      ,[ServerDynamicPortNumber] = @DynamicportNo
GO