Robtex

Up: 5.255.254.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 5.255.255.0/25
Down right: 5.255.255.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.255.255.5	PTR	yandex.ru
5.255.255.5	A	xn--e1aihik.xn--p1ai
5.255.255.5	A	old.yandex.com.tr
5.255.255.50	PTR	yandex.ru
5.255.255.50	A	www.yandex.ru
5.255.255.50	A	www.garaev.biz
5.255.255.55	A+PTR	yandex.ru
5.255.255.55	A	xn--e1aihik.xn--p1ai
5.255.255.55	A	old.yandex.com.tr
5.255.255.60	A+PTR	yandex.ru
5.255.255.60	A	www.yandex.ru
5.255.255.60	A	www.garaev.biz
5.255.255.70	PTR	yandex.ru
5.255.255.70	A	www.yandex.ru
5.255.255.70	A	yandex.tj
5.255.255.77	PTR	yandex.ru
5.255.255.80	A+PTR	yandex.ru
5.255.255.80	A	yandex.tj
5.255.255.80	A	yandex.co.il
5.255.255.88	A+PTR	yandex.ru
5.255.255.88	A	yandex.com.ge
5.255.255.88	A	yandex.eu