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