Robtex

Up: 66.102.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.102.12.0/23
Down right: 66.102.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.102.12.0	A	iw-in-f0.1e100.net
66.102.12.1	A	vn-in-f1.1e100.net
66.102.12.1	A	ua-in-f1.1e100.net
66.102.12.1	A	lf-in-f1.1e100.net
66.102.12.4	A	cb-in-f4.1e100.net
66.102.12.4	A	yx-in-f4.1e100.net
66.102.12.5	A	cb-in-f5.1e100.net
66.102.12.6	A	qg-in-f6.1e100.net
66.102.12.8	A	oi-in-f8.1e100.net
66.102.12.8	A	qg-in-f8.1e100.net
66.102.12.8	A	cb-in-f8.1e100.net
66.102.12.9	A	yx-in-f9.1e100.net
66.102.12.12	A	cb-in-f12.1e100.net
66.102.12.12	A	oi-in-f12.1e100.net
66.102.12.13	A	cb-in-f13.1e100.net
66.102.12.14	A	vw-in-f14.1e100.net
66.102.12.16	A	vx-in-f16.1e100.net
66.102.12.16	A	yv-in-f16.1e100.net
66.102.12.16	A	od-in-f16.1e100.net
66.102.12.20	A	cb-in-f20.1e100.net
66.102.12.20	A	ix-in-f20.1e100.net
66.102.12.20	A	ie-in-f20.1e100.net
66.102.12.24	A	vw-in-f24.1e100.net
66.102.12.24	A	qs-in-f24.1e100.net
66.102.12.24	A	cb-in-f24.1e100.net
66.102.12.25	A	yx-in-f25.1e100.net
66.102.12.28	A	ef-in-f28.1e100.net
66.102.12.28	A	jl-in-f28.1e100.net
66.102.12.28	A	wm-in-f28.1e100.net
66.102.13.0	A+PTR	0.13.102.66.bc.googleusercontent.com
66.102.13.14	A+PTR	14.13.102.66.bc.googleusercontent.com
66.102.13.17	A+PTR	17.13.102.66.bc.googleusercontent.com
66.102.13.18	A	18.13.102.66.bc.googleusercontent.com
66.102.13.44	A+PTR	44.13.102.66.bc.googleusercontent.com
66.102.13.69	A	69.13.102.66.bc.googleusercontent.com
66.102.13.86	A	86.13.102.66.bc.googleusercontent.com
66.102.13.91	A+PTR	91.13.102.66.bc.googleusercontent.com
66.102.13.93	A+PTR	93.13.102.66.bc.googleusercontent.com
66.102.13.95	PTR	95.13.102.66.bc.googleusercontent.com
66.102.13.97	PTR	97.13.102.66.bc.googleusercontent.com
66.102.13.99	A+PTR	99.13.102.66.bc.googleusercontent.com
66.102.13.99	A	xn--gpfert-wxa.de
66.102.13.99	A	goepfert.it
66.102.13.100	A+PTR	100.13.102.66.bc.googleusercontent.com
66.102.13.101	A	101.13.102.66.bc.googleusercontent.com
66.102.13.102	A+PTR	102.13.102.66.bc.googleusercontent.com
66.102.13.103	A+PTR	103.13.102.66.bc.googleusercontent.com
66.102.13.104	A+PTR	104.13.102.66.bc.googleusercontent.com
66.102.13.104	A	explorenewvisions.com
66.102.13.105	PTR	105.13.102.66.bc.googleusercontent.com
66.102.13.105	A	hun.ro
66.102.13.106	A+PTR	106.13.102.66.bc.googleusercontent.com
66.102.13.113	A+PTR	113.13.102.66.bc.googleusercontent.com
66.102.13.118	A+PTR	118.13.102.66.bc.googleusercontent.com
66.102.13.121	PTR	121.13.102.66.bc.googleusercontent.com
66.102.13.121	A	p-s-y-c-h-o-l-o-g.cz
66.102.13.121	A	jufmirjam.nl
66.102.13.138	A	138.13.102.66.bc.googleusercontent.com
66.102.13.139	A+PTR	139.13.102.66.bc.googleusercontent.com
66.102.13.142	A	142.13.102.66.bc.googleusercontent.com
66.102.13.143	PTR	143.13.102.66.bc.googleusercontent.com
66.102.13.210	PTR	210.13.102.66.bc.googleusercontent.com
66.102.13.226	A+PTR	226.13.102.66.bc.googleusercontent.com
66.102.14.1	A+PTR	66-102-14-1.google.com
66.102.14.16	A	mv42.com
66.102.14.225	PTR	proxy.google.com
66.102.14.241	PTR	proxy.google.com
66.102.15.0	A+PTR	0.15.102.66.bc.googleusercontent.com
66.102.15.1	PTR	1.15.102.66.bc.googleusercontent.com
66.102.15.1	A	wn-in-f1.1e100.net
66.102.15.1	A	iv-in-f1.1e100.net
66.102.15.14	A+PTR	14.15.102.66.bc.googleusercontent.com
66.102.15.35	A+PTR	35.15.102.66.bc.googleusercontent.com
66.102.15.83	PTR	83.15.102.66.bc.googleusercontent.com
66.102.15.83	A	ftpout.blogger.com
66.102.15.83	A	2a.mipediatra.com
66.102.15.84	A+PTR	mailout.blogger.com
66.102.15.85	A+PTR	85.15.102.66.bc.googleusercontent.com
66.102.15.85	A	mail.blogger.com
66.102.15.100	A+PTR	100.15.102.66.bc.googleusercontent.com
66.102.15.100	A	static.blogger.com
66.102.15.100	A	plant.blogger.com
66.102.15.101	PTR	101.15.102.66.bc.googleusercontent.com
66.102.15.103	PTR	103.15.102.66.bc.googleusercontent.com
66.102.15.106	PTR	106.15.102.66.bc.googleusercontent.com
66.102.15.106	A	stats.blogger.com
66.102.15.108	A+PTR	live.blogger.com
66.102.15.150	A+PTR	150.15.102.66.bc.googleusercontent.com
66.102.15.208	A+PTR	208.15.102.66.bc.googleusercontent.com
66.102.15.238	A+PTR	238.15.102.66.bc.googleusercontent.com
66.102.15.255	A+PTR	255.15.102.66.bc.googleusercontent.com