@echo off & setlocal enableextensions
  ::
  :: Test first
  ipconfig|find "IP Address">nul
  if %errorlevel% GTR 0 (
    echo Not connected
    goto :EOF)
  ::
  :: Get the current IP
  for /f "tokens=2 delims=:" %%i in (
    'ipconfig /all^|find "IP Address"'
    ) do set ip=%%i
  set ip=%ip: =%
  echo %ip%
  ::
  :: Look up the IP address on the name server
  for /f "tokens=2 delims=:" %%n in (
    'nslookup %ip%^|find "Name:"'
    ) do set name=%%n
  set name=%name: =%
  echo %name%
  endlocal & goto :EOF

  @echo off & setlocal enableextensions
  ::
  :: Test first
  ipconfig|find "IPv4 Address">nul
  if %errorlevel% GTR 0 (
    echo Not connected
    goto :EOF)
  ::
  :: Get the current IP
  for /f "tokens=2 delims=:(" %%i in (
    'ipconfig /all^|find "IPv4 Address"'
    ) do set ip=%%i
  set ip=%ip: =%
  echo %ip%
  ::
  :: Look up the IP address on the name server
  for /f "tokens=2 delims=:" %%n in (
    'nslookup %ip%^|find "Name:"'
    ) do set name=%%n
  set name=%name: =%
  echo %name%
  endlocal & goto :EOF