🥞 a small distributed DNS checker – much like dnschecker.org but in your terminal, you could put it in /usr/local/bin or somewhere for easy access

dtjek

#!/bin/bash

servers=(
  "Cloudflare:1.1.1.1"
  "Google:8.8.8.8"
  "DNSpod:119.29.29.29"
  "Aliyun:223.5.5.5"
  "114:114.114.114.114"
  "baidu:180.76.76.76"
  "CNNIC:1.2.4.8"
)

if [[ $# -eq 0 ]] ; then
  echo '👋 no argument was provided, please provide a domain name'
  exit 1
fi

for server in "${servers[@]}" ; do
  DNS_PROVIDER="${server%%:*}"
  PROVIDER_IP="${server##*:}"
  printf "%s (%s):\t%s\n" "$DNS_PROVIDER" "$PROVIDER_IP" $(\
    dig +short @"$PROVIDER_IP" $1 \
    | sort -n \
    | sed -e 'H;${x;s/\n/,/g;s/^,//;p;};d'\
  ) &
done

wait