Apex domains cannot have CNAME records.
Question and response
Question
dig redesciudadanasdesolidaridad.org. NS
Answer
redesciudadanasdesolidaridad.org. 5 NS ns1.redesciudadanasdesolidaridad.org.
redesciudadanasdesolidaridad.org. 5 NS ns2.redesciudadanasdesolidaridad.org.
Authority
The response has no authority records.
Additional
ns1.redesciudadanasdesolidaridad.org. 5 A 198.23.167.18
ns2.redesciudadanasdesolidaridad.org. 5 A 198.23.167.21
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0