Robtex

Up: 212.36.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 212.36.32.0/20
Down right: 212.36.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.36.32.27	PTR	host212-36-32-27.ipv4.regusnet.com
212.36.32.34	A	exchange.ashleycoutts.com
212.36.32.90	A	mail.propagate.com
212.36.32.106	PTR	host212-36-32-106.ipv4.regusnet.com
212.36.32.202	PTR	host212-36-32-202.ipv4.regusnet.com
212.36.33.2	PTR	host212-36-33-2.ipv4.regusnet.com
212.36.33.178	A	mail.infoshare-europe.com
212.36.33.250	A	mail.mp2llp.com
212.36.33.250	A	mwb2.bbnplanet.net
212.36.34.136	PTR	host212-36-34-136.ipv4.regusnet.com
212.36.34.206	PTR	host212-36-34-206.ipv4.regusnet.com
212.36.34.206	A	irisinternal.com
212.36.34.214	A	mail2.tribaltools.com
212.36.34.214	A	mail1.tribaltools.com
212.36.35.106	PTR	office.streamworksint.com
212.36.36.2	PTR	host212-36-36-2.ipv4.regusnet.com
212.36.36.38	A	mail1.davidsonmorris.com
212.36.37.116	PTR	host212-36-37-116.ipv4.regusnet.com
212.36.37.116	A	mail.legacyops.com
212.36.37.117	PTR	host212-36-37-117.ipv4.regusnet.com
212.36.37.117	A	leadsvc.com
212.36.37.117	A	keyfinancialclaims.co.uk
212.36.38.20	A+PTR	ftp.yospace.com
212.36.38.20	A	mail.yospace.com
212.36.38.130	PTR	host212-36-38-130.ipv4.regusnet.com
212.36.38.130	A	mail.ilawsoftware.co.uk
212.36.38.138	A	mail.indigoglobal.net
212.36.38.140	A	mail.ilawdigital.com
212.36.39.18	PTR	host212-36-39-18.ipv4.regusnet.com
212.36.39.28	PTR	host212-36-39-28.ipv4.regusnet.com
212.36.39.28	A	mail.supermassivegames.com
212.36.40.0	A	kinetolabs.com
212.36.40.67	PTR	host212-36-40-67.ipv4.regusnet.com
212.36.40.67	A	mail.timbuc.to
212.36.40.67	A	timbuc.to
212.36.40.98	PTR	host212-36-40-98.ipv4.regusnet.com
212.36.40.98	A	keurope.com
212.36.40.102	A	mail.thegardenrecruitment.com
212.36.40.110	A	mail1.ianmonk.com
212.36.41.30	A	mail3.iopasolutions.com
212.36.41.50	A	mail.d-s-g.com
212.36.41.102	PTR	host212-36-41-102.ipv4.regusnet.com
212.36.42.202	PTR	host212-36-42-202.ipv4.regusnet.com
212.36.42.204	PTR	host212-36-42-204.ipv4.regusnet.com
212.36.43.14	PTR	host212-36-43-14.ipv4.regusnet.com
212.36.43.138	PTR	host212-36-43-138.ipv4.regusnet.com
212.36.43.188	PTR	host212-36-43-188.ipv4.regusnet.com
212.36.43.188	A	casenotes.co.uk
212.36.44.155	PTR	host212-36-44-155.ipv4.regusnet.com
212.36.44.186	A	mail.cegos.co.uk
212.36.44.238	PTR	host212-36-44-238.ipv4.regusnet.com
212.36.44.238	A	mail.directaudits.com
212.36.45.75	PTR	host212-36-45-75.ipv4.regusnet.com
212.36.45.104	PTR	mail.sitsgroup.com
212.36.45.104	A	mail.virtualisation-experts.com
212.36.45.104	A	mail.specialist-it-services.net
212.36.45.194	A	mail.e-three.com
212.36.45.231	PTR	agoraforresults.com
212.36.45.242	PTR	host212-36-45-242.ipv4.regusnet.com
212.36.47.58	A	murphy-mail.com
212.36.47.147	PTR	host212-36-47-147.ipv4.regusnet.com
212.36.47.147	A	mail3.nqbillback.com
212.36.47.163	PTR	host212-36-47-163.ipv4.regusnet.com
212.36.47.163	A	mail2.alphajpa.com
212.36.47.163	A	mail.alphajpa.com
212.36.48.46	PTR	host212-36-48-46.ipv4.regusnet.com
212.36.48.210	PTR	host212-36-48-210.ipv4.regusnet.com
212.36.49.4	A	mailgate.keanelaw.co.uk
212.36.49.67	PTR	host212-36-49-67.ipv4.regusnet.com
212.36.49.73	PTR	host212-36-49-73.ipv4.regusnet.com
212.36.49.76	PTR	host212-36-49-76.ipv4.regusnet.com
212.36.49.78	PTR	host212-36-49-78.ipv4.regusnet.com
212.36.49.94	A	mail1.brianmaclaurin.com
212.36.49.114	PTR	host212-36-49-114.ipv4.regusnet.com
212.36.49.122	PTR	host212-36-49-122.ipv4.regusnet.com
212.36.49.122	A	mail2.inviseomedia.co.uk
212.36.49.134	PTR	host212-36-49-134.ipv4.regusnet.com
212.36.49.142	PTR	host212-36-49-142.ipv4.regusnet.com
212.36.49.146	PTR	host212-36-49-146.ipv4.regusnet.com
212.36.49.199	PTR	host212-36-49-199.ipv4.regusnet.com
212.36.49.199	A	cf.landsbanki.co.uk
212.36.49.201	PTR	host212-36-49-201.ipv4.regusnet.com
212.36.49.232	PTR	host212-36-49-232.ipv4.regusnet.com
212.36.50.145	A	mail2.weatherlyplc.com
212.36.51.10	A	backupmail.sequoia.eu
212.36.51.52	A+PTR	mail.godfreybradman.com
212.36.51.52	A	godfreybradman.com
212.36.51.206	PTR	host212-36-51-206.ipv4.regusnet.com
212.36.52.84	A	mail.meridiengroup.eu
212.36.52.107	PTR	host212-36-52-107.ipv4.regusnet.com
212.36.52.166	PTR	office.t-class.co.uk
212.36.52.174	A	mail.sippchoice.co.uk
212.36.52.194	PTR	office.bsky.net
212.36.53.98	A+PTR	mail.rdarecruitment.com
212.36.53.98	A	mail.rda.uk.com
212.36.54.112	PTR	host212-36-54-112.ipv4.regusnet.com
212.36.54.146	A	remote.nsafs.co.uk
212.36.54.166	A	www.c-t-l.biz
212.36.55.162	PTR	host212-36-55-162.ipv4.regusnet.com
212.36.55.162	A	mail.tnk-ti.com
212.36.56.20	PTR	host212-36-56-20.ipv4.regusnet.com
212.36.56.136	PTR	mail.jswm.co.uk
212.36.56.136	A	www.jswm.co.uk
212.36.56.136	A	jswm.co.uk
212.36.56.137	A	mail.modernbiosciences.com
212.36.56.225	A+PTR	mr1.mwbex.com
212.36.57.59	PTR	host212-36-57-59.ipv4.regusnet.com
212.36.57.59	A	argus-sv.arguscapitalgroup.com
212.36.57.59	A	mail.arguscapitalgroup.com
212.36.57.170	PTR	host212-36-57-170.ipv4.regusnet.com
212.36.57.198	PTR	host212-36-57-198.ipv4.regusnet.com
212.36.57.198	A	ex1.steelpoint.co.uk
212.36.58.134	A	mail.cultivate-em.com
212.36.58.194	PTR	host212-36-58-194.ipv4.regusnet.com
212.36.58.210	PTR	host212-36-58-210.ipv4.regusnet.com
212.36.58.211	A+PTR	bexmail.mwbex.com
212.36.59.166	PTR	host212-36-59-166.ipv4.regusnet.com
212.36.60.71	PTR	host212-36-60-71.ipv4.regusnet.com
212.36.60.107	PTR	host212-36-60-107.ipv4.regusnet.com
212.36.60.166	PTR	host212-36-60-166.ipv4.regusnet.com
212.36.61.44	PTR	host212-36-61-44.ipv4.regusnet.com
212.36.61.44	A	mail.vpnotaries.co.uk
212.36.61.170	PTR	mail.ondrapartners.com
212.36.62.62	A	mail.claviswalden.com
212.36.62.85	A	exchange.vonessengroup.net
212.36.62.241	A	ideando.net
212.36.62.241	A	hostmaster.ideando.net
212.36.62.241	A	*.ideando.net
212.36.63.22	PTR	host212-36-63-22.ipv4.regusnet.com
212.36.63.30	PTR	host212-36-63-30.ipv4.regusnet.com
212.36.63.194	PTR	host212-36-63-194.ipv4.regusnet.com
212.36.63.194	A	mx01.dev.it4your.biz
212.36.63.194	A	mail2.it4your.biz
212.36.63.198	A	mail2.brunchesonline.com
212.36.63.198	A	mail2.directochef.com