Robtex

Up: 12.29.100.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 12.29.100.0/25
Down right: 12.29.100.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
12.29.100.8	A	my.americanexpress.com
12.29.100.18	A	partnercards.americanexpress.com
12.29.100.27	A	www.aeprepaid.com
12.29.100.27	A	aeprepaid.com
12.29.100.38	A	axexplore.com
12.29.100.39	A	www24.americanexpress.com
12.29.100.40	A	www10.americanexpress.com
12.29.100.42	A	finance.americanexpress.com
12.29.100.51	A	www.aegnsopsnet.com
12.29.100.55	A	www232.americanexpress.com
12.29.100.57	A	www.securebankca.americanexpress.com
12.29.100.63	A	www132.americanexpress.com
12.29.100.68	A	lab-wifiportal.americanexpress.com
12.29.100.74	A	www369.americanexpress.com
12.29.100.78	A	www31.americanexpress.com
12.29.100.80	A	pwww.americanexpress.com
12.29.100.88	A	www201.americanexpress.com
12.29.100.93	A	tempsamaccess.com
12.29.100.93	A	samaccess.name
12.29.100.93	A	samaccess.biz
12.29.100.110	A	www133.americanexpress.com
12.29.100.116	A	www65.americanexpress.com
12.29.100.117	A	www66.americanexpress.com
12.29.100.118	A	www67.americanexpress.com
12.29.100.120	A	www109.americanexpress.com
12.29.100.131	A	americanexpress.cc
12.29.100.131	A	americanexpres.com.br
12.29.100.131	A	americanexpressisp.com
12.29.100.147	A	www125.americanexpress.com
12.29.100.148	A	amexnigeria.com
12.29.100.154	A	americanexpress-test2.com
12.29.100.161	A	www.twotensixty.net
12.29.100.161	A	*.centurion.com.my
12.29.100.177	A	www152.americanexpress.com
12.29.100.180	A	www213.americanexpress.com
12.29.100.204	A	noticiaspayback.mx
12.29.100.204	A	www.noticiaspayback.mx
12.29.100.217	A	www217.americanexpress.com
12.29.100.225	A	www203.americanexpress.com
12.29.100.234	A	home3.americanexpress.com
12.29.100.249	A	www.americanexpress.co.uk