DNS Propagation

DNS

Query a record across Quad9, Cloudflare, Mullvad and AdGuard and see whether they agree — handy after a DNS change.

Use this from the command line

curl -s https://ipcow.com/api/tools/dns-propagation \
  -H 'content-type: application/json' \
  -d '{"domain":"example.com","type":"A"}'