Robtex

Up: 122.248.160.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 122.248.160.0/23
Down right: 122.248.162.0/23

IP	Type	Hostname
122.248.162.1	A	e28smtp01.in.ibm.com
122.248.162.1	A	e28-mx1.in.ibm.com
122.248.162.2	A+PTR	e28smtp02.in.ibm.com
122.248.162.2	A	e28-mx1.in.ibm.com
122.248.162.3	A	e28-mx1.in.ibm.com
122.248.162.3	A	e28smtp03.in.ibm.com
122.248.162.4	A+PTR	e28smtp04.in.ibm.com
122.248.162.4	A	e28-mx2.in.ibm.com
122.248.162.5	A+PTR	e28smtp05.in.ibm.com
122.248.162.5	A	e28-mx2.in.ibm.com
122.248.162.6	A+PTR	e28smtp06.in.ibm.com
122.248.162.6	A	e28-mx2.in.ibm.com
122.248.162.7	PTR	e28smtp07.in.ibm.com
122.248.162.7	A	e28-mx3.in.ibm.com
122.248.162.8	A+PTR	e28smtp08.in.ibm.com
122.248.162.8	A	e28-mx3.in.ibm.com
122.248.162.9	A	e28-mx3.in.ibm.com
122.248.162.9	A	e28smtp09.in.ibm.com