Robtex

Up: 5.102.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 5.102.192.0/23
Down right: 5.102.194.0/23

IP	Type	Hostname
5.102.192.152	PTR	cust-152.192.102.5.018.net.il
5.102.192.212	PTR	cust-212.192.102.5.018.net.il
5.102.192.216	PTR	cust-216.192.102.5.018.net.il
5.102.192.242	PTR	cust-242.192.102.5.018.net.il
5.102.193.61	PTR	cust-61.193.102.5.018.net.il
5.102.193.61	A	ftp.heimman.com
5.102.195.10	PTR	cust-10.195.102.5.018.net.il
5.102.195.17	PTR	cust-17.195.102.5.018.net.il
5.102.195.39	PTR	cust-39.195.102.5.018.net.il
5.102.195.83	PTR	cust-83.195.102.5.018.net.il
5.102.195.87	PTR	cust-87.195.102.5.018.net.il
5.102.195.129	PTR	cust-129.195.102.5.018.net.il
5.102.195.157	PTR	cust-157.195.102.5.018.net.il
5.102.195.209	PTR	cust-209.195.102.5.018.net.il
5.102.195.220	PTR	cust-220.195.102.5.018.net.il
5.102.195.225	PTR	cust-225.195.102.5.018.net.il
5.102.195.249	PTR	cust-249.195.102.5.018.net.il