ANALYSIS
Graph.instagram.com is a CNAME to instagram.c10r.facebook.com. Instagram.c10r.facebook.com has 14 IP numbers.
IP numbers
The IP numbers are 2a03:2880:f201:c4:face:b00c::43fe, 2a03:2880:f205:2c4:face:b00c::43fe, 2a03:2880:f206:c4:face:b00c::43fe, 2a03:2880:f20d:1c4:face:b00c::43fe, 2a03:2880:f20f:c4:face:b00c::43fe, 2a03:2880:f211:c4:face:b00c::43fe, 2a03:2880:f22d:c4:face:b00c::43fe, 31.13.64.52, 31.13.65.52, 31.13.82.52, 157.240.3.63, 157.240.11.52, 157.240.12.52 and 185.60.216.52. The PTRs of the IP numbers are instagram-p36-shv-01-sea1.fbcdn.net, instagram-p36-shv-02-gru2.fbcdn.net, instagram-p36-shv-01-amt2.fbcdn.net, instagram-p36-shv-02-lax3.fbcdn.net, instagram-p36-shv-01-nrt1.fbcdn.net, instagram-p36-shv-01-atl3.fbcdn.net, instagram-p36-shv-01-frx5.fbcdn.net, instagram-p3-shv-01-amt2.fbcdn.net, instagram-p3-shv-01-atl3.fbcdn.net, instagram-p3-shv-01-nrt1.fbcdn.net, instagram-p3-shv-01-sea1.fbcdn.net, instagram-p3-shv-02-lax3.fbcdn.net, instagram-p3-shv-02-gru2.fbcdn.net and instagram-p3-shv-01-frx5.fbcdn.net. The IP numbers are in different countries.