Blynk will not connect in Spain

Hi at all,
i have write the code in Germany and all is runing well.
Now i am in Spain and will run the esp.
wifi and mqtt are connected, but blynk did not connect
I try it with Blynk.begin(auth, ssid, pass);
Have anyone an idea where i can search for a solution?


local server or blynk server ?

blynk Server

It shouldn’t be a problem, I live in the UK and have a house in Spain. Everything works fine in both locations, and the Blynk server in Frankfurt is the nearest for both locations anyway.

What type of internet connection are you using in Spain?
Some people using 3/4G have experienced issues because their ISP blocks the protocol used by Blynk.

Spanish ISPs are sometimes a bit strange, especially the ones that use Wi-Fi transmission from a nearby aerial to a receiver on the roof of the property.


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ok try to ping you will see something like that

thankyou for response.
i got the same result with ping, it looks that all is ok
but when i look with the most ports are closed
I have here a dish on the roof with a ubique.
I have send a mail to the isp and hope that i got a answer tomorow


Hello again,
i was by the ISP, they will not open the port 80
but the port 8080 oer 8442 is possible.
wich are possible ports for blynk?

I try this
Blynk.config(auth, “”, 8080);

Yes, that is a correct port to use.

Thankyou Gunner,

i cant anyway connect to blynk

i got in the monitor:

    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v0.6.1 on ESP8266

[6718] Connecting to
[11719] Connecting to
blynk connect 0/ Wifi connect 3585/ Wifi conect Connected/ IP mac BC:DD:C2:24:62:33

I have made a forwarding in the router
Service Port 8080
internal Port 80
IP from ESP
i test also internal port 8080

The ISP say that all ports are open and i must do the forwarding
The forwarding to the raspberry where is a emon and a mqtt run very well
please can you help me

I’m very confused by what you’ve done.
There should be no port forwarding unless you’re running a local Blynk server, which you’ve said you aren’t.

I’m also a bit confused about why you’re using Blynk on your ESP rather than using Node-Ted and the Blynk plugin on the Pi, but now probably isn’t the time to change that.


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