Robtex

Up: 88.86.66.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 88.86.66.0/25
Down right: 88.86.66.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
88.86.66.0	PTR	subnet0x4.66.quantum.ru
88.86.66.0	PTR	0.66.kostroma.ptl.ru
88.86.66.4	A	kos-office.ptl.ru
88.86.66.14	PTR	minion.ru
88.86.66.34	PTR	ks-ramedia.66.quantum.ru
88.86.66.34	PTR	34.66.kostroma.ptl.ru
88.86.66.51	PTR	bcast48x4.66.quantum.ru
88.86.66.51	PTR	51.66.kostroma.ptl.ru
88.86.66.58	PTR	mail.brandford.info
88.86.66.58	A	criovita.ru
88.86.66.70	A+PTR	host.startnet.ru
88.86.66.70	A	ns1.kotletar.ru
88.86.66.70	A	ns1.ruskotleta.ru
88.86.66.98	PTR	ks-kostrmedtel.66.quantum.ru
88.86.66.98	PTR	98.66.kostroma.ptl.ru
88.86.66.148	PTR	subnet148x4.66.quantum.ru
88.86.66.148	PTR	148.66.kostroma.ptl.ru
88.86.66.148	A	ns1.ufasgc.ru
88.86.66.151	PTR	bcast148x4.66.quantum.ru
88.86.66.151	PTR	151.66.kostroma.ptl.ru
88.86.66.166	PTR	delosv.ru
88.86.66.206	PTR	kos.vtb.ru
88.86.66.216	PTR	subnet216x4.66.quantum.ru
88.86.66.216	PTR	216.66.kostroma.ptl.ru
88.86.66.250	PTR	ks-univeripp.66.quantum.ru
88.86.66.250	PTR	250.66.kostroma.ptl.ru
88.86.66.254	PTR	ns.kostroma.quantum.ru
88.86.66.254	A	2.204.kostroma.ptl.ru
88.86.66.254	A	26.204.kostroma.ptl.ru
88.86.66.255	PTR	bcast252x4.66.quantum.ru