1. ak.sail-horizon.com
2. amazon-adsystem.com
3. api.parsely.com
4. c.amazon-adsystem.com
5. cdn.concert.io
6. concert.io
7. coral.coralproject.net
8. coralproject.net
9. csp.withgoogle.com
10. d35xxde4fgg0cx.cloudfront.net
11. duet-cdn.vox-cdn.com
12. google.com
13. googleoptimize.com
14. googletagmanager.com
15. googletagservices.com
16. gstatic.com
17. ingest.sentry.io
18. js.memberful.com
19. memberful.com
20. micro.rubiconproject.com
21. moatads.com
22. narrativ.com
23. o4682.ingest.sentry.io
24. parsely.com
25. polyfill.io
26. rubiconproject.com
27. sail-horizon.com
28. sentry.io
29. static.narrativ.com
30. theverge.coral.coralproject.net
31. vox-cdn.com
32. www.google.com
33. www.googleoptimize.com
34. www.googletagmanager.com
35. www.googletagservices.com
36. www.gstatic.com
37. z.moatads.com
P.S. list courtesy of the uMatrix browser extension