nic.booking IN A 5.57.17.159 nic.booking IN NS a.nic.booking. nic.booking IN NS b.nic.booking. nic.booking IN NS c.nic.booking. nic.booking IN NS ns1.dns.nic.booking. nic.booking IN NS ns2.dns.nic.booking. nic.booking IN NS ns3.dns.nic.booking.