Robtex

Up: 208.138.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 208.138.21.0/25
Down right: 208.138.21.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.138.21.1	A+PTR	1-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.2	A	cunamutual.com.jm
208.138.21.13	A+PTR	13-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.29	A	29-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.52	A+PTR	mail.atljamaica.com
208.138.21.52	A	mailb.atljamaica.com
208.138.21.52	A	mail.bmljamaica.com
208.138.21.67	A+PTR	mail.cvmtv.com
208.138.21.73	PTR	mail.paymaster-online.com
208.138.21.76	PTR	76-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.110	PTR	ssl.com.jm
208.138.21.110	A	mx02.spartanshipping.biz
208.138.21.110	A	lime.ssl.com.jm
208.138.21.115	A	115-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.120	A+PTR	mail.yummybakery.com
208.138.21.120	A	smtp.yummybakery.com
208.138.21.120	A	yummybakery.com
208.138.21.122	PTR	mail.dottech.net
208.138.21.137	A	137-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.141	A	crawfordjamaica.com
208.138.21.154	A+PTR	154-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.154	A	mail2.mtw.gov.jm
208.138.21.154	A	mail2.mhtww.gov.jm
208.138.21.166	PTR	cbf.com.jm
208.138.21.184	A	184-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.192	A	mail.stjamesmc.gov.jm
208.138.21.199	PTR	199-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.199	A	clenvironmental.com.jm
208.138.21.239	A	mail.mvotraders.com
208.138.21.239	A	mvotraders.com
208.138.21.249	PTR	249-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.249	A	mail.isptcjm.com
208.138.21.249	A	mail.alliedprotectionjm.com
208.138.21.250	PTR	250-21-138-208-br1-static-dsl.cwjamaica.com
208.138.21.250	A	mail2.symptai.com