Avast product/or something just appeared on my network, explaination, please

[REDACTED]

Hi folks, I do not have any Avast products installed on my PC. A few minutes ago this appeared,
IP:   91.213.143.4
Hostname:   ftp.avast.com
ISP:   AVAST Software s.r.o.
Organization:   AVAST Software s.r.o.
City:   Prague
Region:   Hlavni Mesto Praha
Country:   Czech Republic
Timezone:   Europe/Prague

What is it and why is it on my PC, Avast seems unwilling to answer to answer, maybe you all can help?

[Pondus]

Have you installed / updated CCleaner ?

https://press.avast.com/avast-acquires-piriform-maker-of-ccleaner
https://blog.avast.com/welcome-piriform-to-avast