Robtex

Up: 66.209.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.209.240.0/22
Down right: 66.209.244.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.209.240.0	PTR	dsl-66-209-240-0.sptc.net
66.209.240.34	A+PTR	ns1.sptc.net
66.209.240.35	PTR	mail.sptc.net
66.209.240.35	A+PTR	ns2.sptc.net
66.209.240.35	PTR	www.sptc.net
66.209.240.36	A	monitor.sptc.net
66.209.240.38	A	filter.sptc.net
66.209.240.39	A	filter.sptc.net
66.209.240.42	A+PTR	mail.sptc.net
66.209.240.42	A	webmail.sptc.net
66.209.240.42	A	sptc.net
66.209.240.131	A	exmail.cowan-group.com
66.209.240.131	A	exmail.diversifiedfsi.com
66.209.240.205	A	dsl-66-209-240-205.sptc.net
66.209.241.8	A+PTR	dsl-66-209-241-8.sptc.net
66.209.241.11	A+PTR	dsl-66-209-241-11.sptc.net
66.209.241.19	A+PTR	dsl-66-209-241-19.sptc.net
66.209.241.26	A+PTR	dsl-66-209-241-26.sptc.net
66.209.241.115	A+PTR	dsl-66-209-241-115.sptc.net
66.209.241.129	A+PTR	dsl-66-209-241-129.sptc.net
66.209.241.137	A+PTR	dsl-66-209-241-137.sptc.net
66.209.241.163	A+PTR	dsl-66-209-241-163.sptc.net
66.209.241.219	A+PTR	dsl-66-209-241-219.sptc.net
66.209.241.238	A	dsl-66-209-241-238.sptc.net
66.209.242.8	A	dsl-66-209-242-8.sptc.net
66.209.242.58	A	dsl-66-209-242-58.sptc.net
66.209.242.89	A	dsl-66-209-242-89.sptc.net
66.209.242.113	A	dsl-66-209-242-113.sptc.net
66.209.243.10	A+PTR	dsl-66-209-243-10.sptc.net
66.209.243.32	A+PTR	dsl-66-209-243-32.sptc.net
66.209.243.96	A+PTR	dsl-66-209-243-96.sptc.net
66.209.243.102	A	dsl-66-209-243-102.sptc.net
66.209.243.172	A	dsl-66-209-243-172.sptc.net
66.209.244.143	A	nowadreamer.com
66.209.244.229	A	dsl-66-209-244-229.sptc.net
66.209.245.30	A	dsl-66-209-245-30.sptc.net
66.209.245.44	A	dsl-66-209-245-44.sptc.net
66.209.245.55	A	dsl-66-209-245-55.sptc.net
66.209.245.61	A	dsl-66-209-245-61.sptc.net
66.209.245.64	A+PTR	dsl-66-209-245-64.sptc.net
66.209.245.81	A	dsl-66-209-245-81.sptc.net
66.209.245.174	A	dsl-66-209-245-174.sptc.net
66.209.245.183	A	dsl-66-209-245-183.sptc.net
66.209.245.189	A	dsl-66-209-245-189.sptc.net
66.209.245.243	A+PTR	dsl-66-209-245-243.sptc.net
66.209.246.89	PTR	dsl-66-209-246-89.sptc.net
66.209.246.89	A	plumbearcat.com
66.209.246.144	A	dsl-66-209-246-144.sptc.net
66.209.246.199	A	dsl-66-209-246-199.sptc.net
66.209.247.16	A	dsl-66-209-247-16.sptc.net
66.209.247.50	A+PTR	dsl-66-209-247-50.sptc.net
66.209.247.164	A	dsl-66-209-247-164.sptc.net
66.209.247.198	A	dsl-66-209-247-198.sptc.net
66.209.247.205	A	dsl-66-209-247-205.sptc.net
66.209.247.246	A	dsl-66-209-247-246.sptc.net