Robtex

Up: 66.231.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 66.231.128.0/20
Down right: 66.231.144.0/20

IP	Type	Hostname
66.231.128.0	PTR	66-231-128-0.apt.gru.net
66.231.128.27	A	66-231-128-27.apt.gru.net
66.231.128.150	A	66-231-128-150.apt.gru.net
66.231.128.169	A	66-231-128-169.apt.gru.net
66.231.130.9	A	66-231-130-9.apt.gru.net
66.231.131.47	A	66-231-131-47.apt.gru.net
66.231.132.0	PTR	66-231-132-0.apt.gru.net
66.231.132.62	A	codyjackson.me
66.231.132.153	A	66-231-132-153.apt.gru.net
66.231.133.0	PTR	66-231-133-0.apt.gru.net
66.231.133.127	A	elementsofuncertainty.com
66.231.133.127	A	chaosstick.com
66.231.134.0	PTR	66-231-134-0.apt.gru.net
66.231.135.0	PTR	66-231-135-0.apt.gru.net
66.231.135.128	PTR	66-231-135-128.apt.gru.net
66.231.137.0	PTR	66-231-137-0.apt.gru.net
66.231.137.68	A	digitalhumanconnection.com
66.231.137.75	A	basharoot.com
66.231.137.75	A	66-231-137-75.apt.gru.net
66.231.137.75	A	basharatchoudhry.com
66.231.137.128	PTR	66-231-137-128.apt.gru.net
66.231.140.140	A	eahealth.info
66.231.140.203	A	bulldogstorage.myqnapcloud.com
66.231.141.34	PTR	66-231-141-34.apt.gru.net
66.231.142.108	A	wrongturn.us
66.231.142.183	A	bbcxxsnbk.com
66.231.142.214	A	66-231-142-214.apt.gru.net
66.231.143.82	A	getho.me
66.231.144.62	A	thecomictable.com
66.231.147.238	A	66-231-147-238.apt.gru.net
66.231.149.156	A	66-231-149-156.apt.gru.net
66.231.149.202	A	66-231-149-202.apt.gru.net
66.231.152.116	A	home.jbuss.net
66.231.152.211	PTR	66-231-152-211.bra.apt.gru.net
66.231.156.243	A+PTR	66-231-156-243.apt.gru.net
66.231.156.243	A	jbuss.net
66.231.157.247	A+PTR	66-231-157-247.apt.gru.net
66.231.157.247	A	ufecktbwehkwwy.com
66.231.159.255	PTR	66-231-159-255.apt.gru.net