Robtex

Up: 66.201.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.201.128.0/21
Down right: 66.201.136.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.201.128.18	PTR	sun-pdt-2.oregontrail.net
66.201.128.18	A	grantcountyoregon.com
66.201.128.18	A	mfilt-pdt.oregontrail.net
66.201.129.149	A	interpathlabs.net
66.201.129.149	A	interpathlabs.org
66.201.129.149	A	interpathlabs.biz
66.201.133.242	A	br2-pdt.go180.net
66.201.133.243	A	br1-ent.go180.net
66.201.133.244	A	br1-bak.go180.net
66.201.133.245	A	br1-lag.go180.net
66.201.135.5	A	p5-hrm.oregontrail.net
66.201.136.10	PTR	as2-pdt.go180.net
66.201.136.154	PTR	66-201-136-154.dynamic.mammothnetworks.com
66.201.136.250	A	cat1-pdt.go180.net
66.201.137.8	A	bak-66-201-137-8.oregontrail.net
66.201.137.14	A	bak-66-201-137-14.oregontrail.net
66.201.137.15	A	bak-66-201-137-15.oregontrail.net
66.201.137.16	A	bak-66-201-137-16.oregontrail.net
66.201.137.33	A	bak-66-201-137-33.oregontrail.net
66.201.137.38	A	bak-66-201-137-38.oregontrail.net
66.201.137.41	A	bak-66-201-137-41.oregontrail.net
66.201.137.49	A	bak-66-201-137-49.oregontrail.net
66.201.138.129	A+PTR	r-arl.oregontrail.net
66.201.138.135	A	p-arl.oregontrail.net
66.201.138.138	A	arl-66-201-138-138.oregontrail.net
66.201.138.139	A	arl-66-201-138-139.oregontrail.net
66.201.138.144	A	arl-66-201-138-144.oregontrail.net
66.201.138.145	A	arl-66-201-138-145.oregontrail.net
66.201.138.146	A	arl-66-201-138-146.oregontrail.net
66.201.138.147	A	arl-66-201-138-147.oregontrail.net
66.201.138.225	A+PTR	p-mor.oregontrail.net
66.201.139.65	A	r-mch.oregontrail.net
66.201.139.97	A	r-hun.oregontrail.net
66.201.139.129	A	r-hep.oregontrail.net
66.201.139.180	A	hep-66-201-139-180.oregontrail.net
66.201.141.2	A	ap-bnd-lib.oregontrail.net
66.201.141.130	A	u3-bnd-ab-s2.oregontrail.net
66.201.141.131	A	u3-bnd-ab-s1.oregontrail.net
66.201.141.134	A	u3-bnd-pd.oregontrail.net
66.201.141.136	A	u3-bnd-wf.oregontrail.net
66.201.141.144	A+PTR	ap-bnd-pd.oregontrail.net
66.201.141.146	A	ap-bnd-wf.oregontrail.net
66.201.142.82	PTR	66-201-142-82.dynamic.mammothnetworks.com
66.201.142.226	PTR	66-201-142-226.dynamic.mammothnetworks.com
66.201.143.66	A	r-hun-w1.oregontrail.net
66.201.143.74	A	r-mor.oregontrail.net
66.201.143.129	A	br3-pdt.go180.net
66.201.143.131	A	br4-pdt.go180.net
66.201.143.134	A	r-hrm.oregontrail.net