The hosts file was used to resolve host names for decades before the DNS system was implemented, since way back in the ARPANET days. Since they were used to aide in network name resolution, hosts files grew to become massive documents.
bwiup. qxv7vdaemc.pages.dev/34qxv7vdaemc.pages.dev/523qxv7vdaemc.pages.dev/701qxv7vdaemc.pages.dev/992qxv7vdaemc.pages.dev/662qxv7vdaemc.pages.dev/478qxv7vdaemc.pages.dev/283qxv7vdaemc.pages.dev/927qxv7vdaemc.pages.dev/752qxv7vdaemc.pages.dev/283qxv7vdaemc.pages.dev/780qxv7vdaemc.pages.dev/311qxv7vdaemc.pages.dev/343qxv7vdaemc.pages.dev/235qxv7vdaemc.pages.dev/561
what is a host file