Robtex

Up: 80.64.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 80.64.144.0/21
Down right: 80.64.152.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.64.144.64	PTR	80.64.144.64.dsl.cegecom.lu
80.64.145.41	A	admada.de
80.64.145.41	A	mail.admada.de
80.64.145.61	A	myidbv.com
80.64.145.62	A	b2fair-plus.com
80.64.145.62	A	b2fair-plus.eu
80.64.145.62	A	b2fair.biz
80.64.147.176	PTR	80.64.147.176.dsl.cegecom.lu
80.64.148.16	PTR	80.64.148.16.dsl.cegecom.lu
80.64.148.17	PTR	80.64.148.17.dsl.cegecom.lu
80.64.148.48	PTR	80.64.148.48.dsl.cegecom.lu
80.64.148.81	PTR	80.64.148.81.dsl.cegecom.lu
80.64.148.113	PTR	80.64.148.113.dsl.cegecom.lu
80.64.148.129	PTR	80.64.148.129.dsl.cegecom.lu
80.64.148.163	PTR	80.64.148.163.dsl.cegecom.lu
80.64.148.177	PTR	80.64.148.177.dsl.cegecom.lu
80.64.148.179	PTR	80.64.148.179.dsl.cegecom.lu
80.64.148.193	PTR	80.64.148.193.dsl.cegecom.lu
80.64.148.209	PTR	80.64.148.209.dsl.cegecom.lu
80.64.150.39	A	mail.inventa.lu
80.64.150.39	A	www.inventa.lu
80.64.150.39	A	*.inventa.lu
80.64.153.2	PTR	ip-002-153-064-080.cegecom.lu
80.64.153.32	PTR	ip-032-153-064-080.cegecom.lu
80.64.153.32	A	pjur.dyndns.org
80.64.156.2	PTR	ip-002-156-064-080.cegecom.lu
80.64.156.19	PTR	ip-019-156-064-080.cegecom.lu
80.64.156.48	PTR	ip-048-156-064-080.cegecom.lu
80.64.156.65	PTR	ip-065-156-064-080.cegecom.lu
80.64.156.82	PTR	ip-082-156-064-080.cegecom.lu
80.64.156.99	PTR	ip-099-156-064-080.cegecom.lu
80.64.156.114	PTR	ip-114-156-064-080.cegecom.lu
80.64.156.128	PTR	ip-128-156-064-080.cegecom.lu
80.64.156.130	PTR	ip-130-156-064-080.cegecom.lu
80.64.156.144	PTR	ip-144-156-064-080.cegecom.lu
80.64.156.176	PTR	ip-176-156-064-080.cegecom.lu
80.64.156.192	PTR	ip-192-156-064-080.cegecom.lu
80.64.156.195	PTR	ip-195-156-064-080.cegecom.lu
80.64.156.243	PTR	ip-243-156-064-080.cegecom.lu
80.64.157.19	PTR	ip-019-157-064-080.cegecom.lu
80.64.157.33	PTR	ip-033-157-064-080.cegecom.lu
80.64.157.65	PTR	ip-065-157-064-080.cegecom.lu
80.64.157.96	PTR	ip-096-157-064-080.cegecom.lu
80.64.157.113	PTR	ip-113-157-064-080.cegecom.lu
80.64.157.114	PTR	ip-114-157-064-080.cegecom.lu
80.64.157.144	PTR	ip-144-157-064-080.cegecom.lu
80.64.157.161	PTR	ip-161-157-064-080.cegecom.lu
80.64.157.163	PTR	ip-163-157-064-080.cegecom.lu
80.64.157.176	PTR	ip-176-157-064-080.cegecom.lu
80.64.157.179	PTR	ip-179-157-064-080.cegecom.lu
80.64.157.194	PTR	ip-194-157-064-080.cegecom.lu
80.64.157.209	PTR	ip-209-157-064-080.cegecom.lu
80.64.157.224	PTR	ip-224-157-064-080.cegecom.lu
80.64.157.225	PTR	ip-225-157-064-080.cegecom.lu
80.64.159.2	PTR	ip-002-159-064-080.cegecom.lu
80.64.159.4	PTR	ip-004-159-064-080.cegecom.lu
80.64.159.48	PTR	ip-048-159-064-080.cegecom.lu
80.64.159.82	PTR	ip-082-159-064-080.cegecom.lu
80.64.159.83	PTR	ip-083-159-064-080.cegecom.lu
80.64.159.96	PTR	ip-096-159-064-080.cegecom.lu
80.64.159.115	PTR	ip-115-159-064-080.cegecom.lu
80.64.159.144	PTR	ip-144-159-064-080.cegecom.lu
80.64.159.145	PTR	ip-145-159-064-080.cegecom.lu
80.64.159.146	PTR	ip-146-159-064-080.cegecom.lu
80.64.159.162	PTR	ip-162-159-064-080.cegecom.lu
80.64.159.177	PTR	ip-177-159-064-080.cegecom.lu
80.64.159.209	PTR	ip-209-159-064-080.cegecom.lu
80.64.159.240	PTR	ip-240-159-064-080.cegecom.lu