Robtex

Up: 91.137.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 91.137.16.0/21
Down right: 91.137.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.137.16.22	A+PTR	vdsl-91-137-16-22.net.encoline.de
91.137.16.22	A	preusse-raetsch.dyndns.org
91.137.16.32	A+PTR	vdsl-91-137-16-32.net.encoline.de
91.137.16.33	A+PTR	vdsl-91-137-16-33.net.encoline.de
91.137.16.41	A+PTR	vdsl-91-137-16-41.net.encoline.de
91.137.16.99	A+PTR	vdsl-91-137-16-99.net.encoline.de
91.137.16.99	A	steffi-babett-wartenberg.com
91.137.16.117	A+PTR	vdsl-91-137-16-117.net.encoline.de
91.137.16.136	A+PTR	vdsl-91-137-16-136.net.encoline.de
91.137.16.136	A	karimwagner.com
91.137.16.185	A+PTR	vdsl-91-137-16-185.net.encoline.de
91.137.17.192	A+PTR	vdsl-91-137-17-192.net.encoline.de
91.137.17.192	A	urmel.is-a-geek.net
91.137.17.228	A+PTR	vdsl-91-137-17-228.net.encoline.de
91.137.18.208	A+PTR	vdsl-91-137-18-208.net.encoline.de
91.137.18.208	A	abraxas-weimar.dyndns.org
91.137.19.201	A+PTR	vdsl-91-137-19-201.net.encoline.de
91.137.19.201	A	hanke-matzky.dyndns.org
91.137.20.117	A+PTR	vdsl-91-137-20-117.net.encoline.de
91.137.20.117	A	hocu-mv.no-ip.info
91.137.20.180	A+PTR	lastnightinbangkok.com
91.137.20.180	A	mail.lastnightinbangkok.com
91.137.20.180	A	ns.balkantop.com
91.137.21.37	A+PTR	nat-91-137-21-37.net.encoline.de
91.137.21.119	A+PTR	vdsl-91-137-21-119.net.encoline.de
91.137.21.119	A	dr-kerst.de
91.137.23.90	A+PTR	vdsl-91-137-23-90.net.encoline.de
91.137.25.2	A+PTR	nat-91-137-25-2.net.encoline.de
91.137.26.18	PTR	nat-91-137-26-18.net.encoline.de
91.137.26.209	A+PTR	vdsl-91-137-26-209.net.encoline.de
91.137.27.56	PTR	vdsl-91-137-27-56.net.encoline.de
91.137.27.103	A+PTR	vdsl-91-137-27-103.net.encoline.de
91.137.27.239	PTR	vdsl-91-137-27-239.net.encoline.de
91.137.28.64	A+PTR	vdsl-91-137-28-64.net.encoline.de
91.137.28.64	A	mcwasteland.dyndns.org
91.137.28.212	PTR	vdsl-91-137-29-212.net.encoline.de
91.137.28.212	A	8kx0z0j.ath.cx
91.137.28.245	A+PTR	vdsl-91-137-28-245.net.encoline.de
91.137.28.245	A	xn--ngelstedt-v2a.de
91.137.29.45	A+PTR	nat-91-137-29-45.net.encoline.de
91.137.29.212	A+PTR	vdsl-91-137-29-212.net.encoline.de
91.137.30.70	PTR	dhcp-70-30-137-91.thueringendsl.de
91.137.30.138	A	vdsl-91-137-30-138.net.encoline.de