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If you want to take eg ns2.example.com out of the rotation from a DNS point of view you would have to remove that NS record both from the zone itself and from the delegation (through your registrar). Then wait until caches expire. With that in mind, if this is something you need to happen immediately and/or if this will just be a brief outage, it might be ...


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I am trying to send dns query with NAPTR+SRV+A query If you mean doing one DNS query for multiple record types at the same time, then no, this is not possible under current DNS specifications. There have been various works and ideas floating around to do that (specially to be able to get A and AAAA records together) but nothing emerged as a standard, so you ...


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