4 ms·

Seems like they are using these headers only for google.com requests.

• xnx 1y ago
  Yes I think it is part of their multi level testing of for new version rollouts. In addition to all the internal unit and performance tests, they want an extra level of verification that weird things aren't happening in the wild
• AznHisoka 1y ago
  They probably are using it to block bots scraping Google results is my theory