db.1.0.192.in-addr.arpa

This a good VPN source

;
; BIND reverse data file for west subnet
;
$TTL	604800
@	IN	SOA	1.0.192.in-addr.arpa. [e-mail]. (
			      2		; Serial
			 604800		; Refresh
			  86400		; Retry
			2419200		; Expire
			 604800 )	; Negative Cache TTL
	IN	NS	nic.uml.freeswan.org.
;
1	IN	PTR	sunset.uml.freeswan.org.
2	IN	PTR	japan.uml.freeswan.org.
2	IN 	KEY 0x4200 4 1 AQOSRxzbj35bnNsMbTeQ81+tGulyaYNR0HHt25tzzSrCrQGm9YGMFpA450Aq/P3A/Tb4DO4qCX03M4aZZ6RpfToMPKxZQSPrOe0cv+lkCxf6IlA2h2CG7b8m6slVOF/fOhQrnjDDusQiv0RZFSu6k4J3F8VndVXHAEPU9aF2F7WIuQ==

254	IN	PTR	west-private.uml.freeswan.org.
	IN      KEY     0x4200 4 1 AQNzGEFs18VKT00sA+4p+GUKn9C55PYuPQca6C+9Qhj0jfMdQnTRTDLeI+lp9TnidHH7fVpq+PkfiF2LHlZtDwMurLlwzbNOghlEYKfQ080WlOTTUAmOLhAzH28MF70q3hzq0m5fCaVZWtxcV+LfHWdxceCkjBUSaTFtR2W12urFCBz+SB3+OM33aeIbfHxmck2yzhJ8xyMods5kF3ek/RZlFvgN8VqBdcFVrZwTh0mXDCGN12HNFixL6FzQ1jQKerKBbjb0m/IPqugvpVPWVIUajUpLMEmi1FAXc1mFZE9x1SFuSr0NzYIu2ZaHfvsAZY5oN+I+R2oC67fUCjgxY+t7