Very often in my region Amazon seems to use this Intelcom/Dragonfly company for their final mile deliveries. When searching these tracking numbers in Kagi, they do not currently suggest the Intelcom website or show any tracking information unlike some other courier companies. Not as frequently used for me, but would be a nice to have is DHL tracking integration too.
I was in the process of checking on tracking from an amazon order and noticed that searching the tracking number does not provide tracking results or the Intelcom website.