DNS: Resolución, progagación, limpieza

• https://www.whatsmydns.net/
• https://dnschecker.org/#TXT/_acme-challenge.fidmag.org
• https://mxtoolbox.com/SuperTool.aspx?action=txt%3a_acme-challenge.example.com&run=toolpage#
• Chrome: chrome://net-internals/#dns

• host <URI>

• KDE Plasma:

  resolvectl flush-caches

• Windows 10 (CMD):

  ipconfig /flushdns

• MacOS Yosemite:

  sudo discoveryutil udnsflushcaches

/via: https://kinsta.com/es/blog/vaciar-cache-dns/