Robtex

Up: 199.197.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 199.197.128.0/22
Down right: 199.197.132.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.197.130.1	A	portal.corning.com
199.197.130.3	PTR	nsna1.corning.com
199.197.130.4	A	ns4.corning.com
199.197.130.5	A+PTR	lpvip1.corning.com
199.197.130.13	A+PTR	customer.corning.com
199.197.130.30	PTR	ftp.corning.com
199.197.130.31	PTR	smtpgw2.corning.com
199.197.130.32	A+PTR	smtpgw1.corning.com
199.197.130.43	PTR	www.corning.com
199.197.130.43	A	fiber-to-the-home.com
199.197.130.43	A	corning.uz
199.197.130.44	PTR	www.corningfiber.com
199.197.130.45	PTR	customer2.corning.com
199.197.130.52	A	cpnla.corning.com
199.197.130.80	PTR	catalog.corning.com
199.197.130.84	A	csmedia.corning.com
199.197.130.113	A+PTR	nsmtpgw1.corning.com
199.197.130.114	PTR	nsmtpgw2.corning.com
199.197.130.124	A	ftp.corning.com
199.197.130.254	A	onewirelessplatform.com
199.197.130.254	A	mobileaccess.com
199.197.130.254	A	bargoa.com.br
199.197.132.16	A+PTR	navpngw.corning.com
199.197.132.18	A+PTR	webim.corning.com
199.197.132.197	A+PTR	naex0do26.ecorning.com
199.197.135.1	A	portal.corning.com
199.197.135.3	A	ns3.corning.com
199.197.135.4	PTR	nsna2.corning.com
199.197.135.5	A+PTR	lpvip2.corning.com
199.197.135.13	A+PTR	customer.corning.com
199.197.135.30	PTR	ftp.corning.com
199.197.135.31	A+PTR	smtpgw2.corning.com
199.197.135.32	PTR	smtpgw1.corning.com
199.197.135.43	PTR	www.corning.com
199.197.135.43	A	fiber-to-the-home.com
199.197.135.43	A	corning.uz
199.197.135.44	PTR	www.corningfiber.com
199.197.135.45	PTR	customer2.corning.com
199.197.135.52	A	cpnla.corning.com
199.197.135.80	PTR	catalog.corning.com
199.197.135.84	A	csmedia.corning.com
199.197.135.113	PTR	nsmtpgw1.corning.com
199.197.135.114	A+PTR	nsmtpgw2.corning.com
199.197.135.124	A	ftp.corning.com
199.197.135.216	A	edspool.com
199.197.135.254	A	onewirelessplatform.com
199.197.135.254	A	mobileaccess.com
199.197.135.254	A	bargoa.com.br