us.edu.pl.		3599 IN	SOA dns1.us.edu.pl. dns.us.edu.pl. (
				2020012200 ; serial
				3600       ; refresh (1 hour)
				1800       ; retry (30 minutes)
				1814400    ; expire (3 weeks)
				86400      ; minimum (1 day)
				)

us.edu.pl.		3599 IN	TXT "v=spf1 ip4:155.158.102.210 ip4:155.158.102.75
ip4:155.158.102.247 include:_spf.google.com a:mailbus.bg.us.edu.pl a:vdsw.us.edu.pl
-all"

us.edu.pl.		3599 IN	A 155.158.211.71

Mail exchangers:
us.edu.pl.		3599 IN	MX 10 d69205a.ess.barracudanetworks.com.
us.edu.pl.		3599 IN	MX 10 d69205b.ess.barracudanetworks.com.
us.edu.pl.		3599 IN	MX 20 barracuda.us.edu.pl.

Name servers:
us.edu.pl.		3599 IN	NS dns2.us.edu.pl.
us.edu.pl.		3599 IN	NS cocos.fuw.edu.pl.
us.edu.pl.		3599 IN	NS dns1.us.edu.pl.