Robtex

Up: 13.35.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 13.35.21.0/25
Down right: 13.35.21.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.35.21.6	A+PTR	server-13-35-21-6.sin5.r.cloudfront.net
13.35.21.6	A	d1w7ojgvgwt8cz.cloudfront.net
13.35.21.9	A	d2inqv4rfxy9px.cloudfront.net
13.35.21.9	A	d3oum9jtw64d8v.cloudfront.net
13.35.21.12	A+PTR	server-13-35-21-12.sin5.r.cloudfront.net
13.35.21.12	A	d3l0ct8k7gfihb.cloudfront.net
13.35.21.13	PTR	server-13-35-21-13.sin5.r.cloudfront.net
13.35.21.13	A	msf-120.m3.aftersparx.io
13.35.21.13	A	msf-110.m3.aftersparx.io
13.35.21.14	A+PTR	server-13-35-21-14.sin5.r.cloudfront.net
13.35.21.14	A	cdn-old.notonthehighstreet.com
13.35.21.15	A+PTR	server-13-35-21-15.sin5.r.cloudfront.net
13.35.21.15	A	d2a3mga0946svw.cloudfront.net
13.35.21.30	A+PTR	server-13-35-21-30.sin5.r.cloudfront.net
13.35.21.30	A	d1ryuy4y1zjdgm.cloudfront.net
13.35.21.30	A	dx5j298u9prpu.cloudfront.net
13.35.21.33	A+PTR	server-13-35-21-33.sin5.r.cloudfront.net
13.35.21.33	A	d32bxnknj3qf2z.cloudfront.net
13.35.21.36	A+PTR	server-13-35-21-36.sin5.r.cloudfront.net
13.35.21.36	A	derrd5uxbh7gp.cloudfront.net
13.35.21.41	A+PTR	server-13-35-21-41.sin5.r.cloudfront.net
13.35.21.41	A	admin.litmuscdn.com
13.35.21.46	A+PTR	server-13-35-21-46.sin5.r.cloudfront.net
13.35.21.46	A	d1k3py0luhk1oe.cloudfront.net
13.35.21.48	A+PTR	server-13-35-21-48.sin5.r.cloudfront.net
13.35.21.48	A	d3ry8rgwf2p25y.cloudfront.net
13.35.21.57	A+PTR	server-13-35-21-57.sin5.r.cloudfront.net
13.35.21.57	A	res.booklive.jp
13.35.21.74	A+PTR	server-13-35-21-74.sin5.r.cloudfront.net
13.35.21.74	A	d1imc78vac7a0x.cloudfront.net
13.35.21.75	A+PTR	server-13-35-21-75.sin5.r.cloudfront.net
13.35.21.75	A	ds5hrp6nkramd.cloudfront.net
13.35.21.79	A+PTR	server-13-35-21-79.sin5.r.cloudfront.net
13.35.21.79	A	d3qnr1m59zehbb.cloudfront.net
13.35.21.79	A	d2did1ej1vlb4r.cloudfront.net
13.35.21.90	A+PTR	server-13-35-21-90.sin5.r.cloudfront.net
13.35.21.90	A	d28h6ow96o3boa.cloudfront.net
13.35.21.103	A+PTR	server-13-35-21-103.sin5.r.cloudfront.net
13.35.21.103	A	ftb.forgecdn.net
13.35.21.106	A+PTR	server-13-35-21-106.sin5.r.cloudfront.net
13.35.21.106	A	d11ggbkscypvz6.cloudfront.net
13.35.21.116	A+PTR	server-13-35-21-116.sin5.r.cloudfront.net
13.35.21.116	A	d1j45cy24nywts.cloudfront.net
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