101	IN	PTR	db01.domain.org.
102	IN	PTR	db02.domain.org.
103	IN	PTR	db03.domain.org.
111	IN	PTR	utility01.domain.org. 
111	IN	PTR	public.utility01.domain.org. 
111	IN	PTR	private.utility01.domain.org.
112     IN      PTR     utility02.domain.org.
112     IN      PTR     public.utility02.domain.org.
112     IN      PTR     private.utility02.domain.org.
113     IN      PTR     utility03.domain.org.
113     IN      PTR     public.utility03.domain.org.
113     IN      PTR     private.utility03.domain.org.
121	IN	PTR	logger01.domain.org. 
131	IN	PTR	sip01.domain.org. 
131	IN	PTR	public.sip01.domain.org. 
131	IN	PTR	private.sip01.domain.org.
132	IN	PTR	sip02.domain.org. 
132	IN	PTR	public.sip02.domain.org. 
132	IN	PTR	private.sip02.domain.org.
141	IN	PTR	reporter01.domain.org.
151	IN	PTR	memcache01.domain.org.
152	IN	PTR	memcache02.domain.org.
171	IN	PTR	backup01.domain.org.
201	IN	PTR	monitor01.domain.org.
211	IN	PTR	admin01.domain.org.