Robtex

Up: 216.146.33.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 216.146.33.0/26
Down right: 216.146.33.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.146.33.1	PTR	mxin-01-ewr.mailhop.org
216.146.33.1	A	kuebler.org
216.146.33.1	A	mx3.adcomcorp.com
216.146.33.2	PTR	mxin-02-ewr.mailhop.org
216.146.33.3	PTR	mxin-03-ewr.mailhop.org
216.146.33.3	A	mailserver.rslndt.com
216.146.33.3	A	mailserver.rslndt.co.uk
216.146.33.4	PTR	mxin-04-ewr.mailhop.org
216.146.33.5	PTR	mxin-05-ewr.mailhop.org
216.146.33.5	A	cmail.ncdd.gov.kh
216.146.33.5	A	mx2.dufo.be
216.146.33.6	PTR	mxin-06-ewr.mailhop.org
216.146.33.6	A	mx2.dufo.be
216.146.33.6	A	mail2.tford.ca
216.146.33.7	PTR	mxin-07-ewr.mailhop.org
216.146.33.7	A	srv2-menarabriques.ma
216.146.33.7	A	mx2.p-hospitality.nl
216.146.33.11	PTR	mxout-011-bos.mailhop.org
216.146.33.15	PTR	mxout-015-bos.mailhop.org
216.146.33.17	PTR	mxout-017-bos.mailhop.org
216.146.33.20	PTR	mxout-020-ewr.mailhop.org
216.146.33.29	PTR	mxout-029-ewr.mailhop.org
216.146.33.33	PTR	mxout-033-ewr.mailhop.org
216.146.33.36	PTR	mxout-036-ewr.mailhop.org
216.146.33.40	PTR	mxout-040-ewr.mailhop.org
216.146.33.45	PTR	mxout-045-ewr.mailhop.org
216.146.33.48	PTR	mxout-048-ewr.mailhop.org
216.146.33.51	PTR	mxout-051-ewr.mailhop.org
216.146.33.52	PTR	mxout-052-ewr.mailhop.org
216.146.33.62	PTR	mxout-062-ewr.mailhop.org
216.146.33.64	PTR	mtaout-064-ewr.thediscoverer.com
216.146.33.64	A	mtaout-064-ewr.sendlabs.com
216.146.33.65	A+PTR	mtaout-065-ewr.sendlabs.com
216.146.33.66	A+PTR	mtaout-066-ewr.sendlabs.com
216.146.33.67	A+PTR	mtaout-067-ewr.sendlabs.com
216.146.33.68	A+PTR	mtaout-068-ewr.sendlabs.com
216.146.33.70	A+PTR	mtaout-070-ewr.sendlabs.com
216.146.33.71	A+PTR	mtaout-071-ewr.sendlabs.com
216.146.33.72	A+PTR	mtaout-072-ewr.sendlabs.com
216.146.33.75	A+PTR	mtaout-075-ewr.sendlabs.com
216.146.33.76	A+PTR	mtaout-076-ewr.sendlabs.com
216.146.33.78	A+PTR	mtaout-078-ewr.sendlabs.com
216.146.33.79	PTR	mtaout-079-ewr.azadinetwork.com
216.146.33.79	A	mtaout-079-ewr.sendlabs.com
216.146.33.80	A+PTR	mtaout-080-ewr.sendlabs.com
216.146.33.81	A+PTR	mtaout-081-ewr.sendlabs.com
216.146.33.82	A	mtaout-082-ewr.sendlabs.com
216.146.33.83	A+PTR	mtaout-083-ewr.sendlabs.com
216.146.33.84	A	mtaout-084-ewr.sendlabs.com
216.146.33.86	A+PTR	mtaout-086-ewr.sendlabs.com
216.146.33.87	A+PTR	mtaout-087-ewr.sendlabs.com
216.146.33.88	A+PTR	mtaout-088-ewr.square.com
216.146.33.89	A+PTR	mtaout-089-ewr.square.com
216.146.33.91	A+PTR	mtaout-091-ewr.sendlabs.com
216.146.33.92	A+PTR	mtaout-092-ewr.sendlabs.com
216.146.33.93	A+PTR	mtaout-093-ewr.sendlabs.com
216.146.33.94	A+PTR	mtaout-094-ewr.sendlabs.com
216.146.33.96	A+PTR	mtaout-096-ewr.playbill.com
216.146.33.96	A	mtaout-096-ewr.sendlabs.com
216.146.33.97	A+PTR	mtaout-097-ewr.sendlabs.com
216.146.33.98	A+PTR	mtaout-098-ewr.sendlabs.com
216.146.33.99	A+PTR	mtaout-099-ewr.sendlabs.com
216.146.33.100	A	mtaout-100-ewr.sendlabs.com
216.146.33.101	A	mtaout-101-ewr.sendlabs.com
216.146.33.103	A+PTR	mtaout-103-ewr.sendlabs.com
216.146.33.104	A	mtaout-104-ewr.sendlabs.com
216.146.33.105	A+PTR	mtaout-105-ewr.sendlabs.com
216.146.33.106	PTR	mtaout-106-ewr.azadinetwork.com
216.146.33.106	A	mtaout-106-ewr.sendlabs.com
216.146.33.107	A+PTR	mtaout-107-ewr.sendlabs.com
216.146.33.110	A	mtaout-110-ewr.sendlabs.com
216.146.33.113	PTR	mtaout-113-ewr.squareup.com
216.146.33.113	A	mtaout-113-ewr.sendlabs.com
216.146.33.115	A+PTR	mtaout-115-ewr.sendlabs.com
216.146.33.119	A	mtaout-119-ewr.sendlabs.com
216.146.33.120	A+PTR	mtaout-120-ewr.sendlabs.com
216.146.33.122	A+PTR	mtaout-122-ewr.sendlabs.com
216.146.33.123	A	mtaout-123-ewr.sendlabs.com
216.146.33.126	A	mtaout-126-ewr.sendlabs.com