Robtex

Up: 81.84.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 81.85.0.0/17
Down right: 81.85.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.85.18.0	A+PTR	vlan1.m6.stak.com
81.85.18.5	A	ns1.stak.com
81.85.18.5	A	ns1.lawfordheath.com
81.85.18.11	A	suppliers.stak.com
81.85.19.9	A	biltondesign.co.uk
81.85.19.102	A	ns1.incyber.eu
81.85.19.103	A	ns2.blehm.co.uk
81.85.19.103	A	ns1.blehm.co.uk
81.85.45.11	A	oop.gov.af
81.85.45.11	A	mail.oop.gov.af
81.85.47.166	A	ns6.nhtc.ir
81.85.47.166	A	ns2.namvaran.ir
81.85.57.82	A	tvnco.com
81.85.101.8	A	respektujeme.cz
81.85.119.86	A	vliegangst.eu
81.85.119.86	A	nofeartofly.org
81.85.119.86	A	volersanspeur.org
81.85.199.130	A+PTR	mail3.aegisiraq.com
81.85.232.6	A+PTR	sgnaex.sgna-sa.com
81.85.232.8	A+PTR	mail.bmc.edu.sa
81.85.232.9	A+PTR	smtp3.sghgroup.net
81.85.232.23	A	sghsanaex.sghgroup.net
81.85.233.102	PTR	mailrh.zahid.com
81.85.233.122	PTR	maildm.zahid.com
81.85.233.130	PTR	xmail.ayccl.com
81.85.234.178	PTR	mx1.zahid.com
81.85.234.178	A	mx1.tamgo.com
81.85.234.178	A	mx1.z5gholding.com
81.85.234.186	PTR	mailjh.zahid.com
81.85.234.234	PTR	jemail.zahid.com
81.85.234.243	A+PTR	mail.cite-arabia.com.sa
81.85.236.68	PTR	mail.oop.gov.af
81.85.236.171	PTR	mail104.sabafon.com.ye
81.85.238.73	PTR	mailje.zahid.com
81.85.241.10	PTR	mail.smartelecom.org
81.85.254.18	A+PTR	mail2.aegisiraq.com