Robtex

Up: 66.209.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.209.140.0/23
Down right: 66.209.142.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.209.140.17	PTR	facebook-66-209-140-17.bright.net
66.209.140.17	A	scontent.ftol1-1.fna.fbcdn.net
66.209.140.18	PTR	dayt-cas1-cs-16.dial.bright.net
66.209.140.18	A	video.ftol1-1.fna.fbcdn.net
66.209.140.26	A+PTR	dayt-cas1-cs-24.dial.bright.net
66.209.140.33	PTR	facebook-66-209-140-33.bright.net
66.209.140.33	A	instagram.ftol1-1.fna.fbcdn.net
66.209.140.46	A+PTR	dayt-cas1-cs-44.dial.bright.net
66.209.140.77	A+PTR	dayt-cas1-cs-75.dial.bright.net
66.209.140.124	A+PTR	secondary.dns.bright.net
66.209.140.124	A	ns2.mhtc.net
66.209.140.125	PTR	dayt-2511-ts.dial.bright.net
66.209.140.125	A	www.getmyspeed.net
66.209.140.125	A	getmyspeed.com
66.209.140.129	A	tipp1-cs.bright.net
66.209.140.225	A	mins1-ded-gw.bright.net
66.209.140.226	A+PTR	mins1-ded.bright.net
66.209.140.239	PTR	cni-findlay-66-209-140-239.bright.net
66.209.140.239	A	que.zsqplq.club
66.209.141.7	A	cuda-66-209-141-7.brightlightning.net
66.209.142.58	A+PTR	corashare.com
66.209.142.99	A	mail.accubuilt.com
66.209.142.100	PTR	tsc-summary-66-209-142-100.ded.bright.net
66.209.142.100	A	www.accubuilt.com
66.209.142.100	A	ssfuneralvehicles.com
66.209.142.110	A	accu-bilt.com
66.209.142.115	A	poppelaw-dedicated-3.dsl.bright.net
66.209.142.124	A	crawsol.com
66.209.142.230	PTR	tsc-mcdonalds-66-209-142-230.ded.bright.net
66.209.142.242	PTR	support.corashare.com
66.209.142.242	A	tsc-summary-66-209-142-242.ded.bright.net
66.209.142.242	A	metokotesurvey.com
66.209.142.254	A	mail.metokote.com
66.209.143.2	A+PTR	stm-ftth-fib-1.dsl.bright.net
66.209.143.3	PTR	tsc-66.209.143-3.bright.net
66.209.143.3	A	stm-ftth-fib-2.dsl.bright.net
66.209.143.4	A	stm-ftth-fib-3.dsl.bright.net
66.209.143.5	A	stm-ftth-fib-4.dsl.bright.net
66.209.143.6	A	stm-ftth-fib-5.dsl.bright.net
66.209.143.7	A	stm-ftth-fib-6.dsl.bright.net
66.209.143.8	PTR	tsc-66.209.143-8.bright.net
66.209.143.8	A	stm-ftth-fib-7.dsl.bright.net
66.209.143.9	A	stm-ftth-fib-8.dsl.bright.net
66.209.143.10	A	stm-ftth-fib-9.dsl.bright.net