added idn2 + check for www. variant ..

function digx(){

## Author: Dimitri Enns

  red="\e[31;1m"

  green="\e[32;1m"

  empt="\e[0m"

  yel="\e[33;1m"

	bld="\033[1m"

  local ARES

  local AAAARES

  local REV

  local MXS

  local MX

  local IMX

  local RP

  local NSX

  local NS

  if [[ ! -z ${1} ]]; then

    if [[ $(echo ${1} | grep -oE "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b") == ${1} ]]; then

      local REV=$(dig -x ${1} +short)

    if [[ $(echo ${1} | grep -oE "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b") == "${1}" ]]; then

      REV=$(dig -x "${1}" +short)

      echo -e "${yel}PTR:${empt} $([[ ! -z ${REV} ]] && echo "${REV}" || echo "No PTR")"

      return 0

    fi

    local DO=$1

    local ARES=$(dig A ${DO} +short | xargs)

    local AAAARES=$(dig AAAA ${DO} +short | xargs)

    if [[ ! -z ${ARES} ]]; then

    DO="$(echo "${1}" | idn2)"

    if [[ $(echo ${DO} | grep -P '((?=[a-z0-9-]{1,63}\.)(xn--)?[a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,63}' ) != "${DO}" ]]; then

      echo -e "Sorry, but your input: ${red}${DO}${empt} does not seem to be a domain name."

      return 0

    fi

    if [[ ${DO} =~ ^www ]]; then

      DO=$(echo "${DO}" | sed 's/www.//g')

    fi

    echo -e " === ${bld}${green}${DO}${empt} === "

    ## A Records

    ARES=$(dig A "${DO}" +short | xargs)

    if [[ ! -z ${ARES} ]]; then

      for i in ${ARES}; do

        REV=$(dig -x "${i}" +short)

        echo -e "  ${yel}IPv4:${empt} ${i}\n$([[ ! -z ${REV} ]] && for n in ${REV}; do echo "      ${yel}PTR:${empt} ${n}"; done || echo "   No PTR")"

      done

    fi

    ARES="" ## Variable reset

    ## AAAA Records

    AAAARES=$(dig AAAA ${DO} +short | xargs)

    if [[ ! -z ${AAAARES} ]]; then

      for i in ${AAAARES}; do

          local REV=$(dig -x ${i} +short)

        REV=$(dig -x "${i}" +short)

        echo -e "  ${yel}IPv6:${empt} ${i}\n$([[ ! -z ${REV} ]] && for n in ${REV}; do echo "      ${yel}PTR:${empt} ${n}"; done || echo "  No PTR")"

      done

    fi

      for i in ${ARES}; do

        local REV=$(dig -x ${i} +short)

        echo -e "  ${yel}IPv4:${empt} ${i}\n$([[ ! -z ${REV} ]] && for n in ${REV}; do echo "      ${yel}PTR:${empt} ${n}"; done || echo "No PTR")"

      done

    AAAARES="" ## Variable reset

      local MXS=$(dig MX ${DO} +short | wc -l)

      local MX=$(dig MX ${DO} +short | awk '{print$2}' | xargs)

    ## MX Records

    MXS=$(dig MX "${DO}" +short | wc -l)

    MX=$(dig MX "${DO}" +short | awk '{print$2}' | xargs)

    if [[ ! -z ${MX} ]]; then

      if [[ ${MXS} -ge 2 ]]; then

        echo -e " ---"

      fi

      for i in ${MX}; do

        echo -e "  ${yel}MX:${empt} ${i}"

          local IMX=$(dig A ${i} +short| xargs)

        IMX=$(dig A ${i} +short| xargs)

        for p in ${IMX}; do

            local rp="$(dig -x ${p} +short)"

            echo -e "    ${yel}IP:${empt} ${p}\n      ${yel}PTR:${empt} $([[ ! -z ${rp} ]] && echo "${rp}" || echo "No PTR")"

          RP="$(dig -x ${p} +short)"

          echo -e "    ${yel}IP:${empt} ${p}\n      ${yel}PTR:${empt} $([[ ! -z ${RP} ]] && echo "${RP}" || echo "No PTR")"

        done

      done

    fi

    ## TXT Records

    if [[ $(dig TXT ${DO} +short | wc -l) -ge 1 ]]; then

      echo -e " ---"

      echo -e "$(dig TXT ${DO} +short)" | while IFS= read -r line; do

      done

    fi

        local NSX=$(dig NS ${DO} +short | wc -l)

        local NS=$(dig NS ${DO} +short | xargs)

    ## NS Records

    NSX=$(dig NS "${DO}" +short | wc -l)

    NS=$(dig NS "${DO}" +short | xargs)

    if [[ ${NSX} -ge 2 ]]; then

      echo -e " ---"

    fi

    for i in ${NS}; do

      echo -e "${yel}  NS:${empt} ${i}"

    done

        echo -e "\n"

    ## Check www Variant ..

    echo -e " === ${bld}${green}www.${DO}${empt} === "

    ## A Records

    ARES=$(dig A "www.${DO}" +short | grep -v "${DO}" | xargs)

    if [[ ! -z ${ARES} ]]; then

      for i in ${ARES}; do

        REV=$(dig -x ${i} +short)

        echo -e "  ${yel}IPv4:${empt} ${i}\n$([[ ! -z ${REV} ]] && for n in ${REV}; do echo "      ${yel}PTR:${empt} ${n}"; done || echo "   No PTR")"

      done

    fi

    else

      echo -e "NO Record found for Domain: ${red}${DO}${empt}"

      echo -e "$(whois ${DO})"

    ## AAAA Records

    AAAARES=$(dig AAAA "www.${DO}" +short | grep -v "${DO}" | xargs)

    if [[ ! -z ${AAAARES} ]]; then

      for i in ${AAAARES}; do

        REV=$(dig -x ${i} +short)

        echo -e "  ${yel}IPv6:${empt} ${i}\n$([[ ! -z ${REV} ]] && for n in ${REV}; do echo "      ${yel}PTR:${empt} ${n}"; done || echo "  No PTR")"

      done

    fi

    echo -e "\n"

  else

    echo "No args no results. Provide domain as first arg!"; return 1

    echo "No args, no results. Provide domain /IP as first arg!"; return 1

  fi

}