Robtex

Up: 13.35.21.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 13.35.21.128/26
Down right: 13.35.21.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.35.21.134	A+PTR	server-13-35-21-134.sin5.r.cloudfront.net
13.35.21.134	A	d34ps7dibzqjp2.cloudfront.net
13.35.21.135	A+PTR	server-13-35-21-135.sin5.r.cloudfront.net
13.35.21.135	A	dbdwedv0shbov.cloudfront.net
13.35.21.142	A+PTR	server-13-35-21-142.sin5.r.cloudfront.net
13.35.21.142	A	dkwm4t4imdg7t.cloudfront.net
13.35.21.147	A+PTR	server-13-35-21-147.sin5.r.cloudfront.net
13.35.21.147	A	d2k2o01u6n0tie.cloudfront.net
13.35.21.151	A+PTR	server-13-35-21-151.sin5.r.cloudfront.net
13.35.21.151	A	d2jfyp5l0tj2hu.cloudfront.net
13.35.21.152	A	poptropica.com
13.35.21.153	A+PTR	server-13-35-21-153.sin5.r.cloudfront.net
13.35.21.153	A	www.myfitnesspal.jp
13.35.21.158	PTR	server-13-35-21-158.sin5.r.cloudfront.net
13.35.21.158	A	bluebeam.slack.com
13.35.21.158	A	aonlyogt.slack.com
13.35.21.167	A+PTR	server-13-35-21-167.sin5.r.cloudfront.net
13.35.21.167	A	d3l5nvmu5hjfha.cloudfront.net
13.35.21.167	A	d2qhv0uxugnaqh.cloudfront.net
13.35.21.181	PTR	server-13-35-21-181.sin5.r.cloudfront.net
13.35.21.181	A	d1av41e8e2zr5n.cloudfront.net
13.35.21.182	A+PTR	server-13-35-21-182.sin5.r.cloudfront.net
13.35.21.182	A	display.ellotte.com
13.35.21.182	A	search.ellotte.com
13.35.21.186	A+PTR	server-13-35-21-186.sin5.r.cloudfront.net
13.35.21.186	A	indeedassessments-api.com
13.35.21.189	A	d1s8ai9yok3amy.cloudfront.net
13.35.21.192	A+PTR	server-13-35-21-192.sin5.r.cloudfront.net
13.35.21.192	A	d12uoft6w60kpo.cloudfront.net
13.35.21.197	A+PTR	server-13-35-21-197.sin5.r.cloudfront.net
13.35.21.197	A	d9286s6jhh2du.cloudfront.net
13.35.21.198	A+PTR	server-13-35-21-198.sin5.r.cloudfront.net
13.35.21.198	A	d37si7wiu7kmpz.cloudfront.net
13.35.21.204	A	d3eju24r2ptc5d.cloudfront.net
13.35.21.204	A	api.mapbox.com
13.35.21.206	A	api.branch.io
13.35.21.220	PTR	server-13-35-21-220.sin5.r.cloudfront.net
13.35.21.220	A	d39fbvvvia7i6z.cloudfront.net
13.35.21.220	A	mercadolibre.com.br
13.35.21.223	A+PTR	server-13-35-21-223.sin5.r.cloudfront.net
13.35.21.223	A	d23nvpc8815by6.cloudfront.net
13.35.21.224	A	cloud-video.unrulymedia.com
13.35.21.229	A+PTR	server-13-35-21-229.sin5.r.cloudfront.net
13.35.21.229	A	d4a2ik77z27vq.cloudfront.net
13.35.21.232	A+PTR	server-13-35-21-232.sin5.r.cloudfront.net
13.35.21.232	A	dwkw7pxix8u25.cloudfront.net
13.35.21.235	A+PTR	server-13-35-21-235.sin5.r.cloudfront.net
13.35.21.235	A	newsletter-images.sndimg.com
13.35.21.243	A	www.rsvp.com.au
13.35.21.244	A+PTR	server-13-35-21-244.sin5.r.cloudfront.net
13.35.21.244	A	d10fuuthhzbe0v.cloudfront.net
13.35.21.249	A	mercadopago.cl
13.35.21.250	A+PTR	server-13-35-21-250.sin5.r.cloudfront.net
13.35.21.250	A	d10l9zzdlcl6ti.cloudfront.net
13.35.21.251	A+PTR	server-13-35-21-251.sin5.r.cloudfront.net
13.35.21.251	A	d2dlahgey3ajeg.cloudfront.net
13.35.21.251	A	dqf50htm2g738.cloudfront.net
13.35.21.254	A+PTR	server-13-35-21-254.sin5.r.cloudfront.net
13.35.21.254	A	workflow-ui-prod.licensingstack.com