Robtex

Up: 13.35.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 13.35.80.0/23
Down right: 13.35.82.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.35.80.2	A+PTR	server-13-35-80-2.bos50.r.cloudfront.net
13.35.80.9	A+PTR	server-13-35-80-9.bos50.r.cloudfront.net
13.35.80.24	A+PTR	server-13-35-80-24.bos50.r.cloudfront.net
13.35.80.24	A	reddit-subreddit-uploaded-media.s3-accelerate.amazonaws.com
13.35.80.43	A+PTR	server-13-35-80-43.bos50.r.cloudfront.net
13.35.80.43	A	d16i1fibns1d1f.cloudfront.net
13.35.80.120	A+PTR	server-13-35-80-120.bos50.r.cloudfront.net
13.35.80.120	A	hibuoks8.micpn.com
13.35.80.120	A	a8lqwygm.micpn.com
13.35.81.38	A	datahouse.awsapps.com
13.35.81.84	A+PTR	server-13-35-81-84.bos50.r.cloudfront.net
13.35.81.84	A	d1a2ff6zd1qdb8.cloudfront.net
13.35.81.194	A+PTR	server-13-35-81-194.bos50.r.cloudfront.net
13.35.81.222	A+PTR	server-13-35-81-222.bos50.r.cloudfront.net
13.35.82.2	A	www.sight-sound.com
13.35.82.3	PTR	server-13-35-82-3.bos50.r.cloudfront.net
13.35.82.20	A+PTR	server-13-35-82-20.bos50.r.cloudfront.net
13.35.82.20	A	ds28kssha89qs.cloudfront.net
13.35.82.20	A	talk-online.net
13.35.82.21	A	ds28kssha89qs.cloudfront.net
13.35.82.23	A	talk-online.net
13.35.82.24	A+PTR	server-13-35-82-24.bos50.r.cloudfront.net
13.35.82.24	A	northwestbible.org
13.35.82.25	A+PTR	server-13-35-82-25.bos50.r.cloudfront.net
13.35.82.25	A	northwestbible.org
13.35.82.47	A	www.sight-sound.com
13.35.82.49	PTR	server-13-35-82-49.bos50.r.cloudfront.net
13.35.82.49	A	consumerreports.org
13.35.82.51	A+PTR	server-13-35-82-51.bos50.r.cloudfront.net
13.35.82.51	A	northwestbible.org
13.35.82.75	PTR	server-13-35-82-75.bos50.r.cloudfront.net
13.35.82.77	PTR	server-13-35-82-77.bos50.r.cloudfront.net
13.35.82.85	A	consumerreports.org
13.35.82.87	A	talk-online.net
13.35.82.88	A	consumerreports.org
13.35.82.96	PTR	server-13-35-82-96.bos50.r.cloudfront.net
13.35.82.98	A	www.sight-sound.com
13.35.82.106	PTR	server-13-35-82-106.bos50.r.cloudfront.net
13.35.82.109	PTR	server-13-35-82-109.bos50.r.cloudfront.net
13.35.82.109	A	talk-online.net
13.35.82.109	A	consumerreports.org
13.35.82.111	PTR	server-13-35-82-111.bos50.r.cloudfront.net
13.35.82.113	A	ds28kssha89qs.cloudfront.net
13.35.82.124	A	www.sight-sound.com
13.35.82.125	PTR	server-13-35-82-125.bos50.r.cloudfront.net
13.35.82.128	A	ds28kssha89qs.cloudfront.net
13.35.82.158	A+PTR	server-13-35-82-158.bos50.r.cloudfront.net
13.35.82.172	A+PTR	server-13-35-82-172.bos50.r.cloudfront.net
13.35.83.120	A+PTR	server-13-35-83-120.bos50.r.cloudfront.net
13.35.83.246	A+PTR	server-13-35-83-246.bos50.r.cloudfront.net