Registered to Intuit as the QuickBooks database dynamic port.
IANA lists 8019 as qbdb, "QB DB Dynamic Port", part of the block Intuit registered for QuickBooks Desktop. In a multi-user QuickBooks installation the Database Server Manager on the file-hosting PC uses this port so workstations can open the company file. Outside a Windows LAN running QuickBooks it is a rare port with no other well-known occupant.
Do not expose
It is a file-hosted accounting database service designed for a trusted local network. Nothing about it is built to survive the open internet.
$ nmap -sV -Pn -p 8019 TARGETSeen this on your network? Beige Box scans your Wi-Fi and shows every open port on every device — and its Ports tool links straight back here.
Get Beige Box →also available as JSON · Markdown
Corrections or a missing port? Reply @rimrocksystems.