Robtex

Up: 172.217.0.128/25
Can't show all results, try to descend to a more specific CIDR
Down left: 172.217.0.192/27
Down right: 172.217.0.224/27
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
172.217.0.224	A+PTR	dfw06s38-in-f0.1e100.net
172.217.0.224	A+PTR	yyz10s03-in-f0.1e100.net
172.217.0.225	A+PTR	dfw06s38-in-f1.1e100.net
172.217.0.225	A+PTR	yyz10s03-in-f1.1e100.net
172.217.0.226	A+PTR	dfw06s38-in-f2.1e100.net
172.217.0.226	A+PTR	yyz10s03-in-f2.1e100.net
172.217.0.226	PTR	iad30s50-in-f2.1e100.net
172.217.0.227	A+PTR	dfw06s38-in-f3.1e100.net
172.217.0.227	A+PTR	yyz10s03-in-f3.1e100.net
172.217.0.227	A	alt20.gstatic.com
172.217.0.228	A+PTR	dfw06s38-in-f4.1e100.net
172.217.0.228	A+PTR	yyz10s03-in-f4.1e100.net
172.217.0.229	A+PTR	yyz10s03-in-f5.1e100.net
172.217.0.229	A+PTR	dfw06s38-in-f5.1e100.net
172.217.0.230	A+PTR	yyz10s03-in-f6.1e100.net
172.217.0.230	A+PTR	dfw06s38-in-f6.1e100.net
172.217.0.231	A+PTR	dfw06s38-in-f7.1e100.net
172.217.0.231	A+PTR	yyz10s03-in-f7.1e100.net
172.217.0.232	A+PTR	dfw06s38-in-f8.1e100.net
172.217.0.232	A+PTR	yyz10s03-in-f8.1e100.net
172.217.0.233	A+PTR	dfw06s38-in-f9.1e100.net
172.217.0.233	A+PTR	yyz10s03-in-f9.1e100.net
172.217.0.234	A+PTR	dfw06s38-in-f10.1e100.net
172.217.0.234	A+PTR	yyz10s03-in-f10.1e100.net
172.217.0.235	A+PTR	dfw06s38-in-f11.1e100.net
172.217.0.235	PTR	iad30s50-in-f11.1e100.net
172.217.0.235	PTR	yyz10s03-in-f11.1e100.net
172.217.0.236	A+PTR	dfw06s38-in-f12.1e100.net
172.217.0.236	A+PTR	yyz10s03-in-f12.1e100.net
172.217.0.236	PTR	iad30s50-in-f12.1e100.net
172.217.0.237	A	dfw06s38-in-f13.1e100.net
172.217.0.238	PTR	dfw06s38-in-f14.1e100.net
172.217.0.238	PTR	yyz10s03-in-f14.1e100.net
172.217.0.238	A	o-o.preferred.bellcanada-yyz3.v20.lscache4.c.youtube.com
172.217.0.239	A+PTR	dfw06s38-in-f15.1e100.net
172.217.0.240	A+PTR	dfw06s38-in-f16.1e100.net
172.217.0.240	PTR	yyz10s03-in-f16.1e100.net
172.217.0.240	A	pbonebbq.com
172.217.0.241	A	dfw06s38-in-f17.1e100.net
172.217.0.242	A+PTR	dfw06s38-in-f18.1e100.net
172.217.0.243	PTR	dfw06s38-in-f19.1e100.net
172.217.0.243	PTR	yyz10s03-in-f19.1e100.net
172.217.0.243	A	cachorroscancun.com
172.217.0.244	A+PTR	dfw06s38-in-f20.1e100.net
172.217.0.245	A+PTR	dfw06s38-in-f21.1e100.net
172.217.0.245	A+PTR	yyz10s03-in-f21.1e100.net
172.217.0.246	PTR	yyz10s03-in-f22.1e100.net
172.217.0.246	A+PTR	dfw06s38-in-f22.1e100.net
172.217.0.247	A+PTR	dfw06s38-in-f23.1e100.net
172.217.0.247	A+PTR	yyz10s03-in-f23.1e100.net
172.217.0.248	A+PTR	dfw06s38-in-f24.1e100.net
172.217.0.248	PTR	yyz10s03-in-f24.1e100.net
172.217.0.248	PTR	iad30s50-in-f24.1e100.net
172.217.0.249	A	dfw06s38-in-f25.1e100.net
172.217.0.250	A	dfw06s38-in-f26.1e100.net
172.217.0.251	A	dfw06s38-in-f27.1e100.net
172.217.0.252	A+PTR	dfw06s38-in-f28.1e100.net
172.217.0.253	A+PTR	dfw06s38-in-f29.1e100.net
172.217.0.254	PTR	yyz10s03-in-f30.1e100.net
172.217.0.254	PTR	iad30s50-in-f30.1e100.net
172.217.0.254	A+PTR	dfw06s38-in-f30.1e100.net
172.217.0.255	A+PTR	dfw06s38-in-f31.1e100.net
172.217.0.255	A+PTR	yyz10s03-in-f31.1e100.net