https://support.google.com/adsense/thread/129390491/why-is-the-earnings-at-risk-you-need-to-fix-some-ads-txt-file-error-still-showing-on-my-blog?hl=en
@ 10800 IN A 216.239.32.21@ 10800 IN A 216.239.34.21
@ 10800 IN A 216.239.36.21
@ 10800 IN A 216.239.38.21
