Robtex

Up: 89.215.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 89.215.52.0/23
Down right: 89.215.54.0/23

IP	Type	Hostname
89.215.52.253	PTR	unknown.ddns-lan.pl.ekk.bg
89.215.54.108	PTR	unknown.ddns-lan.pl.ekk.bg
89.215.54.133	PTR	unknown.ddns-lan.pl.ekk.bg
89.215.54.193	PTR	unknown.ddns-lan.pl.ekk.bg
89.215.55.98	PTR	unknown.ddns-lan.pl.ekk.bg