Robtex

Up: 83.140.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 83.140.40.0/23
Down right: 83.140.42.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.140.40.55	A+PTR	83.140.40.55.biz.sta.port80.se
83.140.41.20	A	cxdb-node3.rixport80.se
83.140.41.21	A	cxdb-node2.rixport80.se
83.140.41.32	A	c-slave-16.rixtelecom.se
83.140.41.33	A+PTR	cx-cust-sth02.rixtelecom.se
83.140.41.36	A+PTR	c-slave-3.rixtelecom.se
83.140.41.37	A	cxdb.rixtelecom.se
83.140.41.41	A	cxdb.rixport80.se
83.140.41.46	A+PTR	voip46.rixtelecom.se
83.140.41.47	A+PTR	cx-cust-sth01.rixtelecom.se
83.140.41.48	A	cx-vmail01.rixtelecom.se
83.140.41.50	A	cx-cust-shg01.rixtelecom.se
83.140.41.51	A	cx-cust-shg02.rixtelecom.se
83.140.41.53	A+PTR	cxas.rixport80.se
83.140.41.53	A	cxas.rixtelecom.se
83.140.41.55	A	c-slave-12.rixtelecom.se
83.140.41.56	PTR	ipkund3.rixtelecom.se
83.140.41.61	A	ipkund2.rixtelecom.se
83.140.41.84	A+PTR	mail.axfast.se
83.140.41.87	A	www.axfast.se
83.140.41.87	A	axfast.se
83.140.41.88	A	brightmail.axfast.se
83.140.41.93	A	www.axfast.se
83.140.41.93	A	axfast.se
83.140.41.98	PTR	vbcast.com
83.140.41.244	A	ns1.solidtango.net
83.140.43.40	PTR	lensesonly.se
83.140.43.50	PTR	master-web.webguidepartner.com
83.140.43.71	A	skalman.webguidepartner.com
83.140.43.140	A	mail.wgp.se
83.140.43.150	PTR	skalman.webguidepartner.com
83.140.43.205	PTR	lurvas.webguidepartner.com
83.140.43.205	A	mail.blackjackguide.org
83.140.43.205	A	mail.webguidepartner.com
83.140.43.208	A+PTR	mx.webguidepartner.com
83.140.43.209	A	mail.domainservice.se
83.140.43.210	A+PTR	mx.hlm.com
83.140.43.212	A	ns2.domainbay.com
83.140.43.216	A+PTR	mail.domainbay.com
83.140.43.216	A	domainbay.com
83.140.43.217	A	*.domainbay.com