Robtex

Up: 78.128.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 78.128.16.0/21
Down right: 78.128.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
78.128.16.48	PTR	ns2.onet.bg
78.128.16.49	PTR	ns1.onet.bg
78.128.16.50	PTR	mail.onet.bg
78.128.16.65	PTR	ip-16-65.powernet.bg
78.128.17.2	PTR	ip-17-2.powernet.bg
78.128.17.98	PTR	ip-17-98.powernet.bg
78.128.18.66	PTR	ip-18-66.powernet.bg
78.128.18.70	A	geoptter.bol.bg
78.128.18.114	PTR	ip-18-114.powernet.bg
78.128.18.133	A	mail.vakema.com
78.128.18.133	A	zaselanovtsi.info
78.128.18.133	A	dns2.vakema.com
78.128.19.3	PTR	ip-19-3.powernet.bg
78.128.19.4	PTR	ip-19-4.powernet.bg
78.128.19.48	PTR	ns27.rookdns.com
78.128.19.51	PTR	ip-19-51.powernet.bg
78.128.19.97	PTR	ip-19-97.powernet.bg
78.128.19.204	A	78-128-19-204.stz.ddns.bulsat.com
78.128.19.221	A	78-128-19-221.stz.ddns.bulsat.com
78.128.20.34	PTR	ip-20-34.powernet.bg
78.128.21.1	PTR	ip-21-1.powernet.bg
78.128.21.2	PTR	ip-21-2.powernet.bg
78.128.21.194	PTR	ip-21-194.powernet.bg
78.128.21.208	PTR	ip-21-208.powernet.bg
78.128.22.1	PTR	ip-22-1.powernet.bg
78.128.22.73	A	78-128-22-73.stz.ddns.bulsat.com
78.128.23.16	PTR	ip-23-16.powernet.bg
78.128.23.16	A	mail.newobjects.net
78.128.23.16	A	mail.ce-bg.com
78.128.23.67	PTR	ip-23-67.powernet.bg
78.128.23.144	PTR	ip-23-144.powernet.bg
78.128.23.195	PTR	ip-23-195.powernet.bg
78.128.23.208	PTR	ip-23-208.powernet.bg
78.128.23.226	PTR	ip-23-226.powernet.bg
78.128.24.37	A	mail.wwfdcp.bg
78.128.24.37	A	wwfdcp.bg
78.128.24.37	A	www.wwfdcp.bg
78.128.24.67	PTR	euroinformbg.eu
78.128.25.66	PTR	ip-25-66.powernet.bg
78.128.25.66	A	secnet.bg
78.128.25.66	A	medsoftbg.com
78.128.25.107	A	mail.thracian-hoteliers.com
78.128.25.177	PTR	ip-25-177.powernet.bg
78.128.25.224	PTR	ip-25-224.powernet.bg
78.128.26.33	PTR	ip-26-33.powernet.bg
78.128.27.1	A+PTR	ip-27-1.powernet.bg
78.128.27.2	A	ip-27-2.powernet.bg
78.128.27.3	PTR	ip-27-3.powernet.bg
78.128.27.4	A+PTR	ip-27-4.powernet.bg
78.128.27.15	A	ip-27-15.powernet.bg
78.128.27.32	A+PTR	ip-27-32.powernet.bg
78.128.27.39	A	ip-27-39.powernet.bg
78.128.27.48	PTR	ip-27-48.powernet.bg
78.128.27.50	PTR	ns27.rookdns.com
78.128.27.50	A	ip-27-50.powernet.bg
78.128.27.60	A	ip-27-60.powernet.bg
78.128.27.64	A	ip-27-64.powernet.bg
78.128.27.66	PTR	ip-27-66.powernet.bg
78.128.27.68	A	ip-27-68.powernet.bg
78.128.27.69	A	ip-27-69.powernet.bg
78.128.27.71	A	ip-27-71.powernet.bg
78.128.27.80	A	ip-27-80.powernet.bg
78.128.27.81	A+PTR	ip-27-81.powernet.bg
78.128.27.83	PTR	ip-27-83.powernet.bg
78.128.27.105	A	ip-27-105.powernet.bg
78.128.27.113	PTR	ip-27-113.powernet.bg
78.128.27.117	A	ip-27-117.powernet.bg
78.128.27.137	A	ip-27-137.powernet.bg
78.128.27.139	A	ip-27-139.powernet.bg
78.128.27.142	A	ip-27-142.powernet.bg
78.128.27.147	PTR	ip-27-147.powernet.bg
78.128.27.150	A	ip-27-150.powernet.bg
78.128.27.169	A	ip-27-169.powernet.bg
78.128.27.173	A	ip-27-173.powernet.bg
78.128.27.173	A	78-128-27-173.blagoevgrad.ddns.bulsat.com
78.128.27.175	A	ip-27-175.powernet.bg
78.128.27.176	A	ip-27-176.powernet.bg
78.128.27.178	A+PTR	ip-27-178.powernet.bg
78.128.27.183	A	ip-27-183.powernet.bg
78.128.27.193	A	ip-27-193.powernet.bg
78.128.27.201	A	ip-27-201.powernet.bg
78.128.27.206	A	ip-27-206.powernet.bg
78.128.27.210	A	ip-27-210.powernet.bg
78.128.27.213	A	ip-27-213.powernet.bg
78.128.27.221	A	ip-27-221.powernet.bg
78.128.27.225	PTR	ip-27-225.powernet.bg
78.128.27.239	A	ip-27-239.powernet.bg
78.128.27.246	A	ip-27-246.powernet.bg
78.128.27.247	A	ip-27-247.powernet.bg
78.128.27.248	A	ip-27-248.powernet.bg
78.128.27.252	A	ip-27-252.powernet.bg
78.128.28.83	PTR	tekno-bg.com
78.128.29.46	A	jvcomputers.blagoevgrad.ddns.bulsat.com
78.128.30.35	PTR	ip-30-35.powernet.bg
78.128.30.35	A	torvita.com
78.128.30.69	A	mail.totalnaludnica.net
78.128.31.11	A	mail.pansanus.com
78.128.31.11	A	server.pansanus.com
78.128.31.11	A	ns1.pansanus.com
78.128.31.17	PTR	ip-31-17.powernet.bg
78.128.31.65	PTR	ip-31-65.powernet.bg
78.128.31.70	A	mailx.premiertours.bg
78.128.31.70	A	go.premtours.net
78.128.31.70	A	mail.pirinbg.com
78.128.31.96	A	elika-consult.bg
78.128.31.113	PTR	ip-31-113.powernet.bg
78.128.31.129	PTR	ip-31-129.powernet.bg
78.128.31.130	A	mail.lyubenblagoev.com
78.128.31.147	PTR	ip-31-147.powernet.bg
78.128.31.211	PTR	ip-31-211.powernet.bg
78.128.31.226	PTR	ip-31-226.powernet.bg
78.128.31.240	PTR	ip-31-240.powernet.bg