I have changed the DNS and now it is working correctly. Two days ago, a problem occurred with the modem and they changed the device. All settings were on automatic.
But I really can not understand why blog.google did not work right away, and why it was routed to a canada DNS.
I am using Google Chrome and Firefox.
Tks for take the time to help. The internet provider that I am using is called netcombo.com.br and in the past, they have blocked the use of others DNS and some services. I do not know if that is the case now.
I have asked for others using the same internet provider to test and will update when they done.
Edit. So, others using the same provider reporter that https://www.blog.google do not open there.