dig ns coinexchange.io @c0.nic.io
...
;; QUESTION SECTION:
;coinexchange.io. IN NS
;; AUTHORITY SECTION:
coinexchange.io. 86400 IN NS blockedduetospam.pleasecontactsupport.com.
coinexchange.io. 86400 IN NS dummysecondary.pleasecontactsupport.com.
While querying the registrars DNS server resolves the domain.
dig a coinexchange.io @dns1.registrar-servers.com.
...
;; QUESTION SECTION:
;coinexchange.io. IN A
;; ANSWER SECTION:
coinexchange.io. 300 IN A 45.60.46.219
coinexchange.io. 300 IN A 45.60.52.219
;; AUTHORITY SECTION:
coinexchange.io. 1800 IN NS dns1.registrar-servers.com.
coinexchange.io. 1800 IN NS dns2.registrar-servers.com.
BTW: Those two IPs can be used in your host file to access the site directly (just to find out they are under maintenance anyway right now..)