$TTL	3600
@	IN SOA	ns.otptest. lsa.otptest. (
		1		; serial
		60		; refresh
		10		; retry
		300		; expiry
		30 )		; minimum

	IN NS		ns.otptest.
	IN MX	10	mx.otptest.

1	IN PTR		test1-78901234567890123456789012345678.otptest.
2	IN PTR		test2-78901234567890123456789012345678.otptest.
10	IN PTR		mx.otptest.
11	IN PTR		ns1-5678901234567890123456789012345678.otptest.
12	IN PTR		ns2-5678901234567890123456789012345678.otptest.
21	IN PTR		mx1-5678901234567890123456789012345678.otptest.
22	IN PTR		mx2-5678901234567890123456789012345678.otptest.
23	IN PTR		mx3-5678901234567890123456789012345678.otptest.
24	IN PTR		mx4-5678901234567890123456789012345678.otptest.
25	IN PTR		mx5-5678901234567890123456789012345678.otptest.
26	IN PTR		mx6-5678901234567890123456789012345678.otptest.
27	IN PTR		mx7-5678901234567890123456789012345678.otptest.

28	IN PTR		resolve.otptest.

254	IN PTR		ns.otptest.