Robtex

Up: 217.103.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 217.103.128.0/19
Down right: 217.103.160.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.103.128.0	A+PTR	ip-217-103-128-0.ip.prioritytelecom.net
217.103.128.224	PTR	ip-217-103-128-224.ip.prioritytelecom.net
217.103.128.224	A	mail.gvp.nl
217.103.129.0	PTR	ip-217-103-129-0.ip.prioritytelecom.net
217.103.130.130	PTR	ip-217-103-130-130.ip.prioritytelecom.net
217.103.131.0	A+PTR	ip-217-103-131-0.ip.prioritytelecom.net
217.103.131.26	A+PTR	ip-217-103-131-26.ip.prioritytelecom.net
217.103.131.26	A	medicawiki.com
217.103.131.133	A+PTR	ip-217-103-131-133.ip.prioritytelecom.net
217.103.135.30	A+PTR	ip-217-103-135-30.ip.prioritytelecom.net
217.103.136.156	PTR	ip-217-103-136-156.ip.prioritytelecom.net
217.103.142.44	A+PTR	ip-217-103-142-44.ip.prioritytelecom.net
217.103.142.44	A	mail.charlesderidder.nl
217.103.142.88	A+PTR	ip-217-103-142-88.ip.prioritytelecom.net
217.103.143.174	A+PTR	ip-217-103-143-174.ip.prioritytelecom.net
217.103.143.174	A	jaren90muziek.nl
217.103.144.35	A	mail.borghoutsdesign.nl
217.103.145.148	A+PTR	ip-217-103-145-148.ip.prioritytelecom.net
217.103.145.185	A	electronicsandbooks.com
217.103.146.58	A	vanvoorstvanbeest.eu
217.103.146.242	A+PTR	ip-217-103-146-242.ip.prioritytelecom.net
217.103.146.242	A	de-raadt.com
217.103.147.220	A+PTR	ip-217-103-147-220.ip.prioritytelecom.net
217.103.148.13	A+PTR	ip-217-103-148-13.ip.prioritytelecom.net
217.103.148.108	A+PTR	ip-217-103-148-108.ip.prioritytelecom.net
217.103.149.18	A	zelfgemaakt.com
217.103.149.18	A	projectoplus.com
217.103.149.18	A	uppertunit.com
217.103.149.33	A+PTR	ip-217-103-149-33.ip.prioritytelecom.net
217.103.149.123	A	mail.astetic.net
217.103.149.186	A+PTR	ip-217-103-149-186.ip.prioritytelecom.net
217.103.149.186	A	schwartzenberg.net
217.103.149.186	A	mx.schwartzenberg.net
217.103.151.91	A+PTR	ip-217-103-151-91.ip.prioritytelecom.net
217.103.151.91	A	webmail.gonlag.com
217.103.151.91	A	mail.gonlag.com
217.103.152.241	A	webmail.wgi2015.nl
217.103.152.252	A+PTR	ip-217-103-152-252.ip.prioritytelecom.net
217.103.153.164	A	timmit.i234.me
217.103.153.177	A	van-as.com
217.103.153.178	A	ip-217-103-153-178.ip.prioritytelecom.net
217.103.155.4	A	tollenaar.asuscomm.com
217.103.155.4	A	tollenaar.info
217.103.155.37	PTR	ip-217-103-155-37.ip.prioritytelecom.net
217.103.155.37	A	www.martijnvanderzande.nl
217.103.155.37	A	martijnvanderzande.nl
217.103.158.45	A+PTR	ip-217-103-158-45.ip.prioritytelecom.net
217.103.158.83	A+PTR	ip-217-103-158-83.ip.prioritytelecom.net
217.103.158.83	A	webmail.marcus-architecten.nl
217.103.158.114	A+PTR	ip-217-103-158-114.ip.prioritytelecom.net
217.103.158.153	A+PTR	ip-217-103-158-153.ip.prioritytelecom.net
217.103.159.142	A	handgemaakt.com
217.103.160.60	A+PTR	ip-217-103-160-60.ip.prioritytelecom.net
217.103.160.60	A	kantoor.timmit.nl
217.103.160.95	A+PTR	ip-217-103-160-95.ip.prioritytelecom.net
217.103.160.109	A+PTR	ip-217-103-160-109.ip.prioritytelecom.net
217.103.160.173	A+PTR	ip-217-103-160-173.ip.prioritytelecom.net
217.103.160.173	A	nanobob.net
217.103.160.173	A	qualitydadjokes.com
217.103.161.113	A+PTR	ip-217-103-161-113.ip.prioritytelecom.net
217.103.161.175	A+PTR	ip-217-103-161-175.ip.prioritytelecom.net
217.103.161.175	A	dizzipline.com
217.103.162.219	A+PTR	ip-217-103-162-219.ip.prioritytelecom.net
217.103.162.219	A	abozzi.nl
217.103.163.23	A	ihavemail.nl
217.103.163.23	A	mail.ihavemail.nl
217.103.163.23	A	mail.wehavemail.nl
217.103.164.53	A+PTR	ip-217-103-164-53.ip.prioritytelecom.net
217.103.164.150	PTR	ip-217-103-164-150.ip.prioritytelecom.net
217.103.164.150	A	mail.gummbah.org
217.103.164.150	A	mail.amorphis.eu
217.103.164.200	A+PTR	ip-217-103-164-200.ip.prioritytelecom.net
217.103.164.200	A	emeloydlim.com
217.103.167.82	A+PTR	ip-217-103-167-82.ip.prioritytelecom.net
217.103.168.181	A	eitze.nl
217.103.168.181	A	mx.eitze.nl
217.103.169.116	A	eitze.nl
217.103.169.116	A	mx.eitze.nl
217.103.170.41	A	*.dieben-online.net
217.103.170.41	A	dieben-online.net
217.103.170.41	A	smtp.dieben-online.net
217.103.170.161	A+PTR	ip-217-103-170-161.ip.prioritytelecom.net
217.103.171.106	A+PTR	ip-217-103-171-106.ip.prioritytelecom.net
217.103.172.212	PTR	ip-217-103-172-212.ip.prioritytelecom.net
217.103.173.208	A+PTR	ip-217-103-173-208.ip.prioritytelecom.net
217.103.174.143	A+PTR	ip-217-103-174-143.ip.prioritytelecom.net
217.103.175.60	A	mail.astetic.net
217.103.175.118	A	allinlogic.nl
217.103.175.118	A	mail.allinlogic.com
217.103.175.118	A	allinlogic.com
217.103.176.118	A	kantoor.timmit.nl
217.103.176.124	A	mail.allinlogic.com
217.103.176.124	A	mail.allinlogic.nl
217.103.176.129	A+PTR	ip-217-103-176-129.ip.prioritytelecom.net
217.103.176.129	A	donotmuch.net
217.103.178.95	A+PTR	ip-217-103-178-95.ip.prioritytelecom.net
217.103.178.95	A	tollenaar.asuscomm.com
217.103.178.104	A	home.sloeber.nl
217.103.179.110	A+PTR	ip-217-103-179-110.ip.prioritytelecom.net
217.103.180.199	A	home.orhun.nl
217.103.181.169	A+PTR	ip-217-103-181-169.ip.prioritytelecom.net
217.103.181.169	A	hangar4.nl
217.103.181.225	A+PTR	ip-217-103-181-225.ip.prioritytelecom.net
217.103.183.131	PTR	ip-217-103-183-131.ip.prioritytelecom.net
217.103.183.155	A+PTR	ip-217-103-183-155.ip.prioritytelecom.net
217.103.185.122	A	maiso.nl
217.103.185.122	A	mx20.maiso.nl
217.103.185.122	A	mx10.maiso.nl
217.103.187.161	A+PTR	ip-217-103-187-161.ip.prioritytelecom.net
217.103.187.161	A	mail.justageorge.com
217.103.187.222	A+PTR	ip-217-103-187-222.ip.prioritytelecom.net
217.103.189.32	A+PTR	ip-217-103-189-32.ip.prioritytelecom.net
217.103.189.32	A	powny.nl
217.103.189.112	A+PTR	ip-217-103-189-112.ip.prioritytelecom.net
217.103.189.112	A	alexsolab.net
217.103.189.132	A	mail.prutser.nu
217.103.191.119	A+PTR	ip-217-103-191-119.ip.prioritytelecom.net
217.103.191.119	A	eweeder.nl