Robtex

Up: 158.255.232.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 158.255.234.0/24
Down right: 158.255.235.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
158.255.234.0	PTR	usr-0-234-255-158.skynetlink.com
158.255.234.3	PTR	correo.damel.com
158.255.234.68	PTR	h3.skynetlink.com
158.255.234.68	A	mail.fed.es
158.255.234.68	A	vigiprot.com
158.255.234.69	PTR	h3.skynetlink.com
158.255.234.69	A	distribucionesbys.com
158.255.234.69	A	smtp.medievalinformatica.com
158.255.234.71	PTR	h3.telfy.com
158.255.234.71	A	fibradayanueva.com
158.255.234.71	A	fibrasanisidro.com
158.255.234.72	PTR	h72.skynetlink.com
158.255.234.72	A	distribucionesbys.com
158.255.234.73	PTR	h73.skynetlink.com
158.255.234.73	A	smtp.medievalinformatica.com
158.255.234.73	A	medievalinformatica.com
158.255.234.74	PTR	h74.skynetlink.com
158.255.234.74	A	ruisan.com
158.255.234.74	A	canalvegatv.com
158.255.234.75	PTR	h75.skynetlink.com
158.255.234.82	PTR	h82.telfy.com