Robtex

Up: 156.29.128.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 156.29.128.0/23
Down right: 156.29.130.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
156.29.128.65	A	apps.sandiego.gov
156.29.128.65	A	mrlemur.org
156.29.128.65	A	dockets.sandiego.gov
156.29.128.66	PTR	cityofsandiego.gov
156.29.128.66	PTR	sandiego.gov
156.29.128.66	PTR	sannet.gov
156.29.128.67	PTR	vturing.sannet.gov
156.29.128.68	A+PTR	google.sannet.gov
156.29.128.68	A+PTR	meteor.sannet.gov
156.29.128.68	A+PTR	saberweb.sannet.gov
156.29.128.72	A+PTR	sannetsmtp2-in.sannet.gov
156.29.128.73	A+PTR	sannetsmtp2-out.sannet.gov
156.29.128.79	A+PTR	fs.sandiego.gov
156.29.128.83	A+PTR	pascal.sannet.gov
156.29.128.92	A	sdplproxy.sandiego.gov
156.29.128.92	A	sdplproxy2.sandiego.gov
156.29.128.93	A+PTR	docs.sandiego.gov
156.29.128.103	A+PTR	pdwebmail.sannet.gov
156.29.128.108	A	nearpoint.sdcers.org
156.29.128.112	A+PTR	sdshare.sandiego.gov
156.29.128.119	A+PTR	testdsd.sandiego.gov
156.29.128.119	A+PTR	opendsd.sandiego.gov