Robtex

Up: 81.21.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.21.32.0/22
Down right: 81.21.36.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.21.32.2	A	static-32-2.callsat-telecom.com
81.21.32.32	PTR	static-32-32.callsat-telecom.com
81.21.32.35	A	pop.lemissoler.com
81.21.32.111	A	mx3.ancoria.com
81.21.32.115	PTR	static-32-115.callsat-telecom.com
81.21.32.146	A+PTR	ns.callsat.eu
81.21.32.146	A	mail.pcdecibel.com
81.21.32.146	A	callsat.net
81.21.33.2	A	colsw-vlan1.callsat-telecom.com
81.21.33.9	PTR	static-33-9.callsat-telecom.com
81.21.33.11	PTR	static-33-11.callsat-telecom.com
81.21.33.17	A+PTR	n7206-ge-0-3-10.callsat-telecom.com
81.21.33.18	A+PTR	static-33-18.callsat-telecom.com
81.21.33.18	A	lp.sharelink.com.cy
81.21.33.22	A	mail1.sharelinkonline.com
81.21.33.26	A+PTR	static-33-26.callsat-telecom.com
81.21.33.28	A	static-33-28.callsat-telecom.com
81.21.33.33	PTR	n7206-ge-0-3-30.callsat-telecom.com
81.21.33.37	A	static-33-37.callsat-telecom.com
81.21.33.42	A	static-33-42.callsat-telecom.com
81.21.33.43	A+PTR	static-33-43.callsat-telecom.com
81.21.33.49	A+PTR	n7206-ge-0-3-11.callsat-telecom.com
81.21.33.58	PTR	static-33-58.callsat-telecom.com
81.21.33.62	A	mediviewcy.com
81.21.33.62	A	fourth-house.com
81.21.33.67	A+PTR	static-33-67.callsat-telecom.com
81.21.33.70	A	eat365.net
81.21.33.71	A	static-33-71.callsat-telecom.com
81.21.33.78	A	static-33-78.callsat-telecom.com
81.21.33.83	A+PTR	static-33-83.callsat-telecom.com
81.21.33.84	A	static-33-84.callsat-telecom.com
81.21.33.85	A	static-33-85.callsat-telecom.com
81.21.33.89	A+PTR	static-33-89.callsat-telecom.com
81.21.33.92	A	static-33-92.callsat-telecom.com
81.21.33.106	PTR	www.irisspa.com.cy
81.21.33.106	A	kysyte.org
81.21.33.106	A	tamassos.org
81.21.33.126	A	freesteria.com
81.21.33.126	A	yemancy.com
81.21.33.130	A+PTR	mail.advact.org
81.21.33.130	A	ns.advact.net
81.21.33.130	A	advact.net
81.21.33.144	PTR	static-33-144.callsat-telecom.com
81.21.33.146	PTR	static-33-146.callsat-telecom.com
81.21.33.146	A	betonfair.com
81.21.33.146	A	betonalfasports.com
81.21.33.147	PTR	static-33-147.callsat-telecom.com
81.21.33.152	PTR	static-33-152.callsat-telecom.com
81.21.33.162	PTR	static-33-162.callsat-telecom.com
81.21.33.201	PTR	static-33-201.callsat-telecom.com
81.21.33.203	PTR	static-33-203.callsat-telecom.com
81.21.33.211	PTR	static-33-211.callsat-telecom.com
81.21.33.216	PTR	static-33-216.callsat-telecom.com
81.21.33.219	PTR	static-33-219.callsat-telecom.com
81.21.33.227	PTR	static-33-227.callsat-telecom.com
81.21.33.233	PTR	static-33-233.callsat-telecom.com
81.21.33.234	PTR	static-33-234.callsat-telecom.com
81.21.33.241	PTR	static-33-241.callsat-telecom.com
81.21.33.242	PTR	static-33-242.callsat-telecom.com
81.21.33.251	PTR	static-33-251.callsat-telecom.com
81.21.34.34	A+PTR	mail.callsat-telecom.com
81.21.34.34	A	mail.reserve3024.com
81.21.34.34	A	mail.callsat-telecom.net
81.21.34.35	PTR	ns1.callsat-telecom.com
81.21.34.40	A+PTR	mail2.callsat.com.cy
81.21.34.40	PTR	mail2.callsat-telecom.com
81.21.34.40	A	mail2.sievertlarssonscholarships.org
81.21.34.250	A	mail.callsat.eu
81.21.34.253	A	fw.callsat-telecom.com
81.21.35.8	A+PTR	81-21-35-8.badsl.callsat-telecom.com
81.21.35.10	A+PTR	mail1.wsfis.com
81.21.35.16	A	81-21-35-16.badsl.callsat-telecom.com
81.21.35.30	A	81-21-35-30.badsl.callsat-telecom.com
81.21.35.35	A+PTR	81-21-35-35.badsl.callsat-telecom.com
81.21.35.36	A	81-21-35-36.badsl.callsat-telecom.com
81.21.35.55	A	81-21-35-55.badsl.callsat-telecom.com
81.21.35.79	A	81-21-35-79.badsl.callsat-telecom.com
81.21.35.94	A	mail.officeserv.com.cy
81.21.35.94	A	officeserv.com.cy
81.21.35.94	A	81-21-35-94.badsl.callsat-telecom.com
81.21.35.99	A	81-21-35-99.badsl.callsat-telecom.com
81.21.35.130	A+PTR	81-21-35-130.badsl.callsat-telecom.com
81.21.35.143	A	81-21-35-143.badsl.callsat-telecom.com
81.21.35.156	A	81-21-35-156.badsl.callsat-telecom.com
81.21.35.184	A	81-21-35-184.badsl.callsat-telecom.com
81.21.35.204	A	81-21-35-204.badsl.callsat-telecom.com
81.21.35.216	A	81-21-35-216.badsl.callsat-telecom.com
81.21.35.250	A	mail.bestnet.com.cy
81.21.36.2	A	81-21-36-2.badsl.callsat-telecom.com
81.21.36.4	A	81-21-36-4.badsl.callsat-telecom.com
81.21.36.16	A+PTR	81-21-36-16.badsl.callsat-telecom.com
81.21.36.106	A+PTR	mail.hydrainsurance.com.cy
81.21.36.117	A	81-21-36-117.badsl.callsat-telecom.com
81.21.36.140	A	mail.tzakotehniki.com
81.21.36.140	A	mail.sophocleousan.com
81.21.36.140	A	mail.immecy.org
81.21.36.146	A+PTR	mail.heatflow.com.cy
81.21.36.146	A	ses-cy.eu
81.21.36.146	A	mail.ses-cy.eu
81.21.36.210	PTR	mail.phc.com.cy
81.21.36.211	PTR	mail.phc.com.cy
81.21.36.220	A	81-21-36-220.badsl.callsat-telecom.com
81.21.36.231	A	81-21-36-231.badsl.callsat-telecom.com
81.21.36.234	A	81-21-36-234.badsl.callsat-telecom.com
81.21.37.2	A	81-21-37-2.badsl.callsat-telecom.com
81.21.37.4	A	81-21-37-4.badsl.callsat-telecom.com
81.21.37.6	A	81-21-37-6.badsl.callsat-telecom.com
81.21.37.18	PTR	mail.tpbbdo.com.cy
81.21.37.24	A+PTR	81-21-37-24.badsl.callsat-telecom.com
81.21.37.36	A	81-21-37-36.badsl.callsat-telecom.com
81.21.37.58	A	81-21-37-58.badsl.callsat-telecom.com
81.21.37.107	A	81-21-37-107.badsl.callsat-telecom.com
81.21.37.136	A	81-21-37-136.badsl.callsat-telecom.com
81.21.37.151	A	81-21-37-151.badsl.callsat-telecom.com
81.21.37.155	A	81-21-37-155.badsl.callsat-telecom.com
81.21.37.174	A	*.hijet.com
81.21.37.174	A	mail.hijet.com
81.21.37.191	A	81-21-37-191.badsl.callsat-telecom.com
81.21.37.192	A+PTR	81-21-37-192.badsl.callsat-telecom.com
81.21.37.194	A	81-21-37-194.badsl.callsat-telecom.com
81.21.37.200	A	81-21-37-200.badsl.callsat-telecom.com
81.21.37.204	A	mail.kfcp.com.cy
81.21.37.216	A	81-21-37-216.badsl.callsat-telecom.com
81.21.37.224	A	81-21-37-224.badsl.callsat-telecom.com
81.21.37.242	A	81-21-37-242.badsl.callsat-telecom.com
81.21.37.248	A	81-21-37-248.badsl.callsat-telecom.com
81.21.38.2	A+PTR	fw-voice.callsat.eu
81.21.38.48	PTR	static-38-48.callsat-telecom.com
81.21.38.83	PTR	static-38-83.callsat-telecom.com
81.21.38.105	PTR	static-38-105.callsat-telecom.com
81.21.38.114	PTR	static-38-114.callsat-telecom.com
81.21.38.138	PTR	static-38-138.callsat-telecom.com
81.21.38.202	PTR	static-38-202.callsat-telecom.com
81.21.39.3	PTR	static-39-3.callsat-telecom.com
81.21.39.4	PTR	static-39-4.callsat-telecom.com
81.21.39.8	PTR	static-39-8.callsat-telecom.com
81.21.39.19	PTR	static-39-19.callsat-telecom.com
81.21.39.230	A	gateway.ada.com.cy