Robtex

Up: 13.32.96.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 13.32.100.0/23
Down right: 13.32.102.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.32.100.8	PTR	server-13-32-100-8.prg50.r.cloudfront.net
13.32.100.13	A+PTR	server-13-32-100-13.prg50.r.cloudfront.net
13.32.100.15	PTR	server-13-32-100-15.fra60.r.cloudfront.net
13.32.100.16	PTR	server-13-32-100-16.fra60.r.cloudfront.net
13.32.100.16	A	elastic.slack.com
13.32.100.16	A	hamiwallet.slack.com
13.32.100.34	PTR	server-13-32-100-34.fra60.r.cloudfront.net
13.32.100.34	A	server-13-32-100-34.prg50.r.cloudfront.net
13.32.100.37	A+PTR	server-13-32-100-37.prg50.r.cloudfront.net
13.32.100.37	A	d2v9h0vxgzdeu3.cloudfront.net
13.32.100.60	A	saal-digital.pl
13.32.100.82	A+PTR	server-13-32-100-82.prg50.r.cloudfront.net
13.32.100.86	A	saal-digital.pl
13.32.100.96	PTR	server-13-32-100-96.fra60.r.cloudfront.net
13.32.100.96	A	server-13-32-100-96.prg50.r.cloudfront.net
13.32.100.111	PTR	server-13-32-100-111.fra60.r.cloudfront.net
13.32.100.111	A	server-13-32-100-111.prg50.r.cloudfront.net
13.32.100.118	A	saal-digital.pl
13.32.100.122	A	saal-digital.pl
13.32.100.132	PTR	server-13-32-100-132.fra60.r.cloudfront.net
13.32.100.135	A+PTR	server-13-32-100-135.prg50.r.cloudfront.net
13.32.100.155	PTR	server-13-32-100-155.fra60.r.cloudfront.net
13.32.100.180	A+PTR	server-13-32-100-180.prg50.r.cloudfront.net
13.32.100.181	PTR	server-13-32-100-181.fra60.r.cloudfront.net
13.32.100.181	A	server-13-32-100-181.prg50.r.cloudfront.net
13.32.100.183	A	saal-digital.pl
13.32.100.188	A+PTR	server-13-32-100-188.prg50.r.cloudfront.net
13.32.100.193	A+PTR	server-13-32-100-193.prg50.r.cloudfront.net
13.32.100.193	A	oplt.slack.com
13.32.100.193	A	slack-sales-and-cs.slack.com
13.32.100.194	PTR	server-13-32-100-194.prg50.r.cloudfront.net
13.32.100.194	A	saal-digital.pl
13.32.100.201	A+PTR	server-13-32-100-201.prg50.r.cloudfront.net
13.32.100.222	A	saal-digital.pl
13.32.100.223	A+PTR	server-13-32-100-223.prg50.r.cloudfront.net
13.32.100.246	A	saal-digital.pl
13.32.101.32	PTR	server-13-32-101-32.fra60.r.cloudfront.net
13.32.101.32	A	server-13-32-101-32.prg50.r.cloudfront.net
13.32.101.87	A+PTR	server-13-32-101-87.prg50.r.cloudfront.net
13.32.101.88	PTR	server-13-32-101-88.fra60.r.cloudfront.net
13.32.101.88	A	server-13-32-101-88.prg50.r.cloudfront.net
13.32.101.153	A+PTR	server-13-32-101-153.prg50.r.cloudfront.net
13.32.101.191	A+PTR	server-13-32-101-191.prg50.r.cloudfront.net
13.32.101.204	A+PTR	server-13-32-101-204.prg50.r.cloudfront.net
13.32.101.213	A+PTR	server-13-32-101-213.prg50.r.cloudfront.net
13.32.101.216	A+PTR	server-13-32-101-216.prg50.r.cloudfront.net
13.32.101.246	PTR	server-13-32-101-246.prg50.r.cloudfront.net
13.32.101.254	PTR	server-13-32-101-254.prg50.r.cloudfront.net
13.32.102.9	PTR	server-13-32-102-9.atl51.r.cloudfront.net
13.32.102.13	PTR	server-13-32-102-13.atl51.r.cloudfront.net
13.32.102.42	A+PTR	server-13-32-102-42.atl51.r.cloudfront.net
13.32.102.113	PTR	server-13-32-102-113.lax53.r.cloudfront.net
13.32.102.168	PTR	server-13-32-102-168.atl51.r.cloudfront.net
13.32.103.7	A+PTR	server-13-32-103-7.prg50.r.cloudfront.net
13.32.103.11	A	s92odi0owe1io.cloudfront.net
13.32.103.13	A	s92odi0owe1io.cloudfront.net
13.32.103.44	PTR	server-13-32-103-44.prg50.r.cloudfront.net
13.32.103.69	PTR	server-13-32-103-69.prg50.r.cloudfront.net
13.32.103.82	A	s92odi0owe1io.cloudfront.net
13.32.103.105	A+PTR	server-13-32-103-105.prg50.r.cloudfront.net
13.32.103.123	A	s92odi0owe1io.cloudfront.net
13.32.103.133	A	s92odi0owe1io.cloudfront.net
13.32.103.143	A	s92odi0owe1io.cloudfront.net
13.32.103.153	A	s92odi0owe1io.cloudfront.net
13.32.103.156	A+PTR	server-13-32-103-156.prg50.r.cloudfront.net
13.32.103.161	PTR	server-13-32-103-161.prg50.r.cloudfront.net
13.32.103.169	A	s92odi0owe1io.cloudfront.net
13.32.103.177	PTR	server-13-32-103-177.prg50.r.cloudfront.net
13.32.103.182	A+PTR	server-13-32-103-182.prg50.r.cloudfront.net
13.32.103.235	PTR	server-13-32-103-235.prg50.r.cloudfront.net