Robtex

Up: 203.123.1.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 203.123.1.0/26
Down right: 203.123.1.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.123.1.2	PTR	avxasia.com.sg
203.123.1.6	PTR	6.203-123-1.leased.qala.com.sg
203.123.1.10	PTR	10.203-123-1.leased.qala.com.sg
203.123.1.18	PTR	harryelias.com.sg
203.123.1.36	PTR	36.203-123-1.leased-203-123-1.qala.com.sg
203.123.1.51	PTR	fhl.com.sg
203.123.1.51	PTR	51.203-123-1.leased-203-123-1.qala.com.sg
203.123.1.70	A	www.labroy.com.sg
203.123.1.74	A+PTR	labroy.com.sg
203.123.1.74	A	mail1.drydocks-graha.com
203.123.1.74	A	mail.labroy.com.sg
203.123.1.80	PTR	80.203-123-1.leased-203-123-1.qala.com.sg
203.123.1.104	PTR	104.203-123-1.leased-203-123-1.qala.com.sg