ns-b.axcelx.net.
Question and response
Question
dig 42.0-255.141.105.184.in-addr.arpa. PTR
Answer
42.0-255.141.105.184.in-addr.arpa. 36000 PTR ns-b.axcelx.net.
Authority
0-255.141.105.184.in-addr.arpa. 36000 NS ns-a.axcelx.net.
0-255.141.105.184.in-addr.arpa. 36000 NS ns-b.axcelx.net.
Additional
ns-a.axcelx.net. 86400 A 192.34.85.189
ns-b.axcelx.net. 86400 A 192.34.85.189
ns-a.axcelx.net. 86400 AAAA 2602:ff65:0:3:0:0:0:2
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0