Robtex

Up: 81.228.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 81.228.136.0/22
Down right: 81.228.140.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.228.136.1	A+PTR	gw-n11-ud-a14.ias.bredband.telia.com
81.228.136.2	A+PTR	h2n11-ud-a14.ias.bredband.telia.com
81.228.136.5	A	h5n11-ud-a14.ias.bredband.telia.com
81.228.136.6	A	h6n11-ud-a14.ias.bredband.telia.com
81.228.136.17	A+PTR	h17n11-ud-a14.ias.bredband.telia.com
81.228.136.23	A	h23n11-ud-a14.ias.bredband.telia.com
81.228.136.24	A+PTR	h24n11-ud-a14.ias.bredband.telia.com
81.228.136.29	A	h29n11-ud-a14.ias.bredband.telia.com
81.228.136.30	A	h30n11-ud-a14.ias.bredband.telia.com
81.228.136.35	A+PTR	h35n11-ud-a14.ias.bredband.telia.com
81.228.136.38	A	h38n11-ud-a14.ias.bredband.telia.com
81.228.136.40	A+PTR	h40n11-ud-a14.ias.bredband.telia.com
81.228.136.44	A	h44n11-ud-a14.ias.bredband.telia.com
81.228.136.48	A+PTR	h48n11-ud-a14.ias.bredband.telia.com
81.228.136.55	A	h55n11-ud-a14.ias.bredband.telia.com
81.228.136.62	A	h62n11-ud-a14.ias.bredband.telia.com
81.228.136.65	A+PTR	h65n11-ud-a14.ias.bredband.telia.com
81.228.136.68	A	h68n11-ud-a14.ias.bredband.telia.com
81.228.136.77	A	h77n11-ud-a14.ias.bredband.telia.com
81.228.136.79	A	h79n11-ud-a14.ias.bredband.telia.com
81.228.136.80	A+PTR	h80n11-ud-a14.ias.bredband.telia.com
81.228.136.83	A+PTR	h83n11-ud-a14.ias.bredband.telia.com
81.228.136.85	A	h85n11-ud-a14.ias.bredband.telia.com
81.228.136.88	A+PTR	h88n11-ud-a14.ias.bredband.telia.com
81.228.136.89	A+PTR	h89n11-ud-a14.ias.bredband.telia.com
81.228.136.93	A	h93n11-ud-a14.ias.bredband.telia.com
81.228.136.97	A+PTR	h97n11-ud-a14.ias.bredband.telia.com
81.228.136.98	A+PTR	h98n11-ud-a14.ias.bredband.telia.com
81.228.136.101	A	h101n11-ud-a14.ias.bredband.telia.com
81.228.136.102	A	h102n11-ud-a14.ias.bredband.telia.com
81.228.136.106	A+PTR	h106n11-ud-a14.ias.bredband.telia.com
81.228.136.107	A+PTR	h107n11-ud-a14.ias.bredband.telia.com
81.228.136.111	A	h111n11-ud-a14.ias.bredband.telia.com
81.228.136.113	A+PTR	h113n11-ud-a14.ias.bredband.telia.com
81.228.136.114	A+PTR	h114n11-ud-a14.ias.bredband.telia.com
81.228.136.116	A	h116n11-ud-a14.ias.bredband.telia.com
81.228.136.117	A	h117n11-ud-a14.ias.bredband.telia.com
81.228.136.122	A+PTR	h122n11-ud-a14.ias.bredband.telia.com
81.228.136.125	A	h125n11-ud-a14.ias.bredband.telia.com
81.228.136.126	A	h126n11-ud-a14.ias.bredband.telia.com
81.228.136.193	A+PTR	gw32-no49.tbcn.telia.com
81.228.136.195	A+PTR	81-228-136-195-no49.tbcn.telia.com
81.228.136.199	A	81-228-136-199-no49.tbcn.telia.com
81.228.136.201	A+PTR	81-228-136-201-no49.tbcn.telia.com
81.228.136.205	A	81-228-136-205-no49.tbcn.telia.com
81.228.136.211	A+PTR	81-228-136-211-no49.tbcn.telia.com
81.228.136.214	A	81-228-136-214-no49.tbcn.telia.com
81.228.136.215	A	81-228-136-215-no49.tbcn.telia.com
81.228.136.219	A+PTR	81-228-136-219-no49.tbcn.telia.com
81.228.136.222	A	81-228-136-222-no49.tbcn.telia.com
81.228.136.223	A	81-228-136-223-no49.tbcn.telia.com
81.228.136.224	A+PTR	81-228-136-224-no49.tbcn.telia.com
81.228.136.231	A	81-228-136-231-no49.tbcn.telia.com
81.228.136.235	A+PTR	81-228-136-235-no49.tbcn.telia.com
81.228.136.236	A	81-228-136-236-no49.tbcn.telia.com
81.228.136.238	A	81-228-136-238-no49.tbcn.telia.com
81.228.136.243	A+PTR	81-228-136-243-no49.tbcn.telia.com
81.228.136.244	A	81-228-136-244-no49.tbcn.telia.com
81.228.136.252	A	81-228-136-252-no49.tbcn.telia.com
81.228.136.254	A	81-228-136-254-no49.tbcn.telia.com
81.228.137.40	A+PTR	h40n2-ksg-a12.ias.bredband.telia.com
81.228.137.40	A	mx1.devilee.net
81.228.137.40	A	*.devilee.net
81.228.137.106	A+PTR	h106n2-ksg-a12.ias.bredband.telia.com
81.228.137.136	A+PTR	h136n2-ksg-a12.ias.bredband.telia.com
81.228.137.173	A+PTR	h173n2-ksg-a12.ias.bredband.telia.com
81.228.138.7	A+PTR	81-228-138-7-no36.tbcn.telia.com
81.228.138.13	A	81-228-138-13-no36.tbcn.telia.com
81.228.138.13	A	popeen.com
81.228.138.94	A+PTR	81-228-138-94-no36.tbcn.telia.com
81.228.138.127	A+PTR	81-228-138-127-no36.tbcn.telia.com
81.228.138.182	A+PTR	81-228-138-182-no36.tbcn.telia.com
81.228.138.210	A	dyn.aio.nu
81.228.138.240	A+PTR	81-228-138-240-no36.tbcn.telia.com
81.228.140.131	A	mail.wizeit.se
81.228.140.155	PTR	81-228-140-155-no209.tbcn.telia.com
81.228.142.238	A+PTR	81-228-142-238-no242.tbcn.telia.com