Robtex

Up: 199.83.40.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 199.83.40.0/25
Down right: 199.83.40.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.83.40.32	A+PTR	ldcbc1.occ.gov
199.83.40.32	A+PTR	adcbc1.occ.gov
199.83.40.33	A+PTR	ldcbc2.occ.gov
199.83.40.33	A+PTR	adcbc2.occ.gov
199.83.40.34	A+PTR	ldcbc3.occ.gov
199.83.40.34	A+PTR	adcbc3.occ.gov
199.83.40.35	A+PTR	adcbc4.occ.gov
199.83.40.43	A+PTR	tlsmail.occ.treas.gov
199.83.40.45	A+PTR	banknet.gov
199.83.40.45	A+PTR	nationalbank.gov
199.83.40.45	A+PTR	nationalbanknet.gov
199.83.40.46	A+PTR	complaintreferralexpress.gov
199.83.40.46	A+PTR	www.complaintreferralexpress.gov
199.83.40.47	A+PTR	appsec.helpwithmybank.gov
199.83.40.48	A+PTR	apps.occ.gov
199.83.40.49	A+PTR	appsec.occ.gov
199.83.40.51	A	agencycpp.occ.gov
199.83.40.52	A+PTR	fdx.occ.gov
199.83.40.54	A+PTR	comptrollerofthecurrency.gov
199.83.40.54	A+PTR	occ.gov
199.83.40.54	PTR	ots.gov
199.83.40.55	A+PTR	ayudaconmibanco.gov
199.83.40.55	A+PTR	bankanswers.gov
199.83.40.55	PTR	bankcustomer.gov
199.83.40.56	A+PTR	sfs.occ.gov
199.83.40.59	A	pass.occ.treas.gov
199.83.40.61	A+PTR	iams.occ.gov
199.83.40.63	A	hqcondirp03.occ.gov
199.83.40.65	A+PTR	email.occ.gov
199.83.40.74	A+PTR	kiosk.occ.gov
199.83.40.74	A	mobile.glb.occ.gov
199.83.40.75	PTR	www.helpwithmybank.com
199.83.40.75	A+PTR	helpwithmybank.com
199.83.40.75	A+PTR	www.helpwithmybank.us
199.83.40.96	A	careers.occ.gov
199.83.40.98	A+PTR	sfs2.occ.gov
199.83.40.199	PTR	appsec.etl.occ.gov
199.83.40.204	A+PTR	weps.etl.occ.gov
199.83.40.212	A+PTR	pass.etl.occ.gov
199.83.40.223	A+PTR	etl.occ.gov