Robtex

Up: 138.19.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 138.19.48.0/22
Down right: 138.19.52.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
138.19.49.64	A+PTR	138019049064.ctinets.com
138.19.49.240	A+PTR	138019049240.ctinets.com
138.19.49.240	A	bearbearhk.com
138.19.51.176	A+PTR	138019051176.ctinets.com
138.19.51.178	PTR	138019051178.ctinets.com
138.19.51.178	A	b.armdeokilo.at
138.19.51.178	A	ns4.tzaenmenyti.at
138.19.51.246	A+PTR	138019051246.ctinets.com
138.19.52.27	A+PTR	138019052027.ctinets.com
138.19.52.43	A+PTR	138019052043.ctinets.com
138.19.52.59	A+PTR	138019052059.ctinets.com
138.19.52.59	A	nasstorage251.myqnapcloud.com
138.19.52.158	A+PTR	138019052158.ctinets.com
138.19.52.175	A+PTR	138019052175.ctinets.com
138.19.53.69	A+PTR	138019053069.ctinets.com
138.19.53.203	A+PTR	138019053203.ctinets.com
138.19.54.66	A+PTR	138019054066.ctinets.com
138.19.54.66	A	jeanmc.com
138.19.54.136	A+PTR	138019054136.ctinets.com
138.19.54.192	A+PTR	138019054192.ctinets.com
138.19.54.204	A+PTR	138019054204.ctinets.com