Blynk is mqtt broker?

i want ask a question, blynk is mqtt broker or no?

no. Blynk uses own binary protocol

There is a basic MQTT broker built-in to the legacy servers, but it was never really implemented properly, and is of no use.

The easiest way is to use MQTT is with Node-Red and the Blynk ws or IoT contrib depending on whether you are using Blynk Legacy or the new Blynk IoT.

More info here…

I’ll be posting a Blynk IoT update to that topic soon.