一个可以在command line下查看归属地的工具，支持域名/IPv4/IPv6

iplookup

#!/bin/bash
function valid_ipv6()
{
  local regex='^([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}$'
  local var="$1"

  if [[ $var =~ $regex  ]]; then
    echo 0
  else
    echo 1
  fi
}

function valid_ipv4()
{
  local ip=$1
  local stat=1

  if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]];
  then
    OIFS=$IFS
    IFS='.'
    ip=($ip)
    IFS=$OIFS
    [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
        && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
    stat=0
  fi
  echo $stat
}

function valid_ip()
{
  if [[ "$(valid_ipv4 $1)" -eq 0 || "$(valid_ipv6 $1)" -eq 0 ]]
  then
    echo 0
  else
    echo 1
  fi
}

function lookup()
{
  echo $1:
  curl -sL "http://freeapi.ipip.net/$1" -A "Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0"
  echo
}

# main
for i in $*;
do
  if [[ "$(valid_ip $1)" -eq 0 ]]
  then
  	ip="$i"
  else
  	ipv4=`dig +short $i | grep -oE "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b"`
    ipv6=`dig +short AAAA $i`
  fi

  for p in $ip $ipv4 $ipv6
  do
    lookup $p
  done
done