$TTL 300
@ IN SOA ns root (
- 2020112605 ; Serial
+ 2021011001 ; Serial
4h ; slave refresh
15m ; slave retry time in case of a problem
4w ; slave expiration time
novgorod IN CNAME novgorod.mit.edu.
olinda IN A 18.18.208.12
wieliczka IN CNAME wieliczka.mit.edu.
+virunga IN CNAME virunga.mit.edu.
; external IP for Soviet Russia
soviet-russia IN A 73.219.64.71
mc IN CNAME olinda
webapps IN CNAME olinda
extern IN A 66.92.29.156
+vault IN CNAME virunga
*.olinda-proxy IN CNAME olinda