Google.com failing to resolve from Brazil

Failing to resolve for half an hour now.

    % nslookup google.com
    ;; Got SERVFAIL reply from 201.6.2.163, trying next server
    ;; Got SERVFAIL reply from 201.6.2.43, trying next server
    ;; Got SERVFAIL reply from 201.6.2.163, trying next server
    ;; connection timed out; no servers could be reached

Affects everything Google: GMail, YouTube, Analytics, etc.