Robtex

Up: 54.192.39.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 54.192.39.128/26
Down right: 54.192.39.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
54.192.39.139	PTR	server-54-192-39-139.iad89.r.cloudfront.net
54.192.39.139	A	d1drate2wp7695.jfk1.cloudfront.net
54.192.39.139	A	server-54-192-39-139.jfk1.r.cloudfront.net
54.192.39.152	PTR	server-54-192-39-152.jfk1.r.cloudfront.net
54.192.39.154	A+PTR	server-54-192-39-154.jfk1.r.cloudfront.net
54.192.39.155	PTR	server-54-192-39-155.iad89.r.cloudfront.net
54.192.39.155	A	server-54-192-39-155.jfk1.r.cloudfront.net
54.192.39.155	A	d10rwta5peo7zl.cloudfront.net
54.192.39.159	PTR	server-54-192-39-159.iad89.r.cloudfront.net
54.192.39.159	A	server-54-192-39-159.jfk1.r.cloudfront.net
54.192.39.160	A+PTR	server-54-192-39-160.jfk1.r.cloudfront.net
54.192.39.167	A+PTR	server-54-192-39-167.jfk1.r.cloudfront.net
54.192.39.168	A+PTR	server-54-192-39-168.jfk1.r.cloudfront.net
54.192.39.168	A	dsoakedwg5krs.cloudfront.net
54.192.39.170	A+PTR	server-54-192-39-170.jfk1.r.cloudfront.net
54.192.39.172	A+PTR	server-54-192-39-172.jfk1.r.cloudfront.net
54.192.39.173	PTR	server-54-192-39-173.iad89.r.cloudfront.net
54.192.39.173	A	metainfo.com
54.192.39.173	A	d13rxepuu2fckz.jfk1.cloudfront.net
54.192.39.174	A+PTR	server-54-192-39-174.iad89.r.cloudfront.net
54.192.39.174	A	server-54-192-39-174.jfk1.r.cloudfront.net
54.192.39.174	A	climaxmolybdenum.net
54.192.39.175	PTR	server-54-192-39-175.iad89.r.cloudfront.net
54.192.39.175	A	d1ge0kk1l5kms0.jfk1.cloudfront.net
54.192.39.175	A	d2wt5chn9235vl.jfk1.cloudfront.net
54.192.39.177	A+PTR	server-54-192-39-177.jfk1.r.cloudfront.net
54.192.39.184	PTR	server-54-192-39-184.iad89.r.cloudfront.net
54.192.39.184	A	server-54-192-39-184.jfk1.r.cloudfront.net
54.192.39.187	A+PTR	server-54-192-39-187.jfk1.r.cloudfront.net
54.192.39.188	A+PTR	server-54-192-39-188.jfk1.r.cloudfront.net
54.192.39.190	PTR	server-54-192-39-190.jfk1.r.cloudfront.net
54.192.39.209	A+PTR	server-54-192-39-209.jfk1.r.cloudfront.net
54.192.39.213	A+PTR	server-54-192-39-213.jfk1.r.cloudfront.net
54.192.39.218	PTR	server-54-192-39-218.iad89.r.cloudfront.net
54.192.39.218	A	server-54-192-39-218.jfk1.r.cloudfront.net
54.192.39.221	A+PTR	server-54-192-39-221.jfk1.r.cloudfront.net
54.192.39.221	A	h-img3.cloudbeds.com
54.192.39.233	PTR	server-54-192-39-233.iad89.r.cloudfront.net
54.192.39.233	A	dowh7e4ptqb7y.jfk1.cloudfront.net
54.192.39.233	A	touchtype-fluency.com
54.192.39.234	A+PTR	server-54-192-39-234.jfk1.r.cloudfront.net