obd.kr.			30 IN SOA ns3.hostcenter.co.kr. root.obd.kr. (
				2008030421 ; serial
				21600      ; refresh (6 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)
obd.kr.			30 IN CNAME host.tistory.io.
host.tistory.io.	30 IN CNAME blog-tistory-l51ybqnn.kgslb.com.
obd.kr.			30 IN CNAME host.tistory.io.
host.tistory.io.	30 IN CNAME blog-tistory-l51ybqnn.kgslb.com.

blog-tistory-l51ybqnn.kgslb.com. 10 IN A 27.0.236.142
obd.kr.			30 IN CNAME host.tistory.io.
host.tistory.io.	30 IN CNAME blog-tistory-l51ybqnn.kgslb.com.

Name servers:
obd.kr.			30 IN NS ns4.hostcenter.co.kr.
obd.kr.			30 IN NS ns3.hostcenter.co.kr.