Robtex

Up: 89.253.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 89.253.152.0/22
Down right: 89.253.156.0/22

IP	Type	Hostname
89.253.152.27	A	ns.pedsurg.net
89.253.152.27	A	ns.pedsurgbg.org
89.253.155.4	PTR	4.155.253.89.blizoo.bg
89.253.155.17	PTR	17.155.253.89.blizoo.bg
89.253.155.32	PTR	32.155.253.89.blizoo.bg
89.253.155.56	PTR	56.155.253.89.blizoo.bg
89.253.155.57	PTR	57.155.253.89.blizoo.bg
89.253.155.75	PTR	75.155.253.89.blizoo.bg
89.253.155.83	PTR	83.155.253.89.blizoo.bg
89.253.155.97	PTR	97.155.253.89.blizoo.bg
89.253.155.99	PTR	99.155.253.89.blizoo.bg
89.253.155.105	PTR	105.155.253.89.blizoo.bg
89.253.155.114	PTR	114.155.253.89.blizoo.bg
89.253.155.115	PTR	115.155.253.89.blizoo.bg
89.253.155.121	PTR	121.155.253.89.blizoo.bg
89.253.155.122	PTR	n155-u122.sofia.cabletel.bg
89.253.155.139	PTR	n155-u139.sofia.cabletel.bg
89.253.155.147	PTR	147.155.253.89.blizoo.bg
89.253.155.168	PTR	168.155.253.89.blizoo.bg
89.253.155.170	PTR	170.155.253.89.blizoo.bg
89.253.155.184	PTR	n155-u184.sofia.cabletel.bg
89.253.155.185	PTR	185.155.253.89.blizoo.bg
89.253.155.186	PTR	186.155.253.89.blizoo.bg
89.253.155.193	PTR	193.155.253.89.blizoo.bg
89.253.155.203	PTR	203.155.253.89.blizoo.bg
89.253.155.209	PTR	n155-u209.sofia.cabletel.bg
89.253.155.210	PTR	210.155.253.89.blizoo.bg
89.253.155.211	PTR	211.155.253.89.blizoo.bg
89.253.155.225	PTR	225.155.253.89.blizoo.bg
89.253.155.226	PTR	226.155.253.89.blizoo.bg
89.253.155.240	PTR	n155-u240.sofia.cabletel.bg
89.253.155.241	PTR	241.155.253.89.blizoo.bg
89.253.155.248	PTR	248.155.253.89.blizoo.bg
89.253.155.249	PTR	249.155.253.89.blizoo.bg
89.253.155.250	PTR	250.155.253.89.blizoo.bg
89.253.156.80	PTR	80.156.253.89.blizoo.bg
89.253.158.93	A	00252e5f76b6.softphone.blizoo.bg
89.253.159.9	PTR	9.159.253.89.blizoo.bg