Robtex

Up: 140.82.112.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 140.82.114.0/24
Down right: 140.82.115.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
140.82.114.2	A+PTR	lb-140-82-114-2-iad.github.com
140.82.114.3	A+PTR	lb-140-82-114-3-iad.github.com
140.82.114.3	A	iad-region.github.com
140.82.114.4	A+PTR	lb-140-82-114-4-iad.github.com
140.82.114.4	A	iad-region.github.com
140.82.114.4	A	github.com
140.82.114.6	A+PTR	lb-140-82-114-6-iad.github.com
140.82.114.9	A+PTR	lb-140-82-114-9-iad.github.com
140.82.114.10	A+PTR	lb-140-82-114-10-iad.github.com
140.82.114.17	A+PTR	lb-140-82-114-17-iad.github.com
140.82.114.17	A	githubazure.com
140.82.114.17	A	githubazuretesting.com
140.82.114.18	A	github.in
140.82.114.18	A	github.ru
140.82.114.26	A+PTR	lb-140-82-114-26-iad.github.com
140.82.114.29	A	githubapp.com
140.82.114.30	PTR	lb-140-82-114-30-iad.github.com
140.82.114.30	A	githubapp.com
140.82.114.35	PTR	lb-140-82-114-35-iad.github.com