[Larry Lucido]

Here ya go. Pick one.

DPD Dallas Police Department (Dallas, TX)
DPD Dead Peer Detection (Cisco)
DPD Dihydropyrimidine Dehydrogenase
DPD Division of Parasitic Diseases (US CDC)
DPD Dual Ported Data
DPD Delegated Path Discovery
DPD Data Processing Division
DPD Dead Peer Detection

[Red Badger]

It’s like UPS or FedEx in the UK.

https://www.dpdlocal.co.uk/content/products_services/uk_delivery_services.jsp