Unexpected requests.exceptions.ConnectionError

I was trying to run this code:

```python3
import requests
r = requests.get("https://upos-sz-mirrorkodo.bilivideoo1.com/")
```

But a BIG ERROR has raised.

```text
Traceback (most recent call last):
  File "E:\Programming\Python\VSC\lib\site-packages\urllib3\connection.py", line 169, in _new_conn
    conn = connection.create_connection(
  File "E:\Programming\Python\VSC\lib\site-packages\urllib3\util\connection.py", line 73, in create_connection
    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
  File "C:\Users\王子涵\AppData\Local\Programs\Python\Python38\lib\socket.py", line 918, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 11001] getaddrinfo failed

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "E:\Programming\Python\VSC\lib\site-packages\urllib3\connectionpool.py", line 699, in urlopen
    httplib_response = self._make_request(
  File "E:\Programming\Python\VSC\lib\site-packages\urllib3\connectionpool.py", line 382, in _make_request
    self._validate_conn(conn)
  File "E:\Programming\Python\VSC\lib\site-packages\urllib3\connectionpool.py", line 1010, in _validate_conn
    conn.connect()
  File "E:\Programming\Python\VSC\lib\site-packages\urllib3\connection.py", line 353, in connect
    conn = self._new_conn()
  File "E:\Programming\Python\VSC\lib\site-packages\urllib3\connection.py", line 181, in _new_conn
    raise NewConnectionError(
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPSConnection object at 0x0000026E92F17F40>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed     

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "E:\Programming\Python\VSC\lib\site-packages\requests\adapters.py", line 439, in send
    resp = conn.urlopen(
  File "E:\Programming\Python\VSC\lib\site-packages\urllib3\connectionpool.py", line 755, in urlopen
    retries = retries.increment(
  File "E:\Programming\Python\VSC\lib\site-packages\urllib3\util\retry.py", line 574, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='upos-sz-mirrorkodo.bilivideoo1.com', port=443): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000026E92F17F40>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "e:\Desktop\1.py", line 48, in <module>
    r = get(
  File "E:\Programming\Python\VSC\lib\site-packages\requests\api.py", line 76, in get
    return request('get', url, params=params, **kwargs)
  File "E:\Programming\Python\VSC\lib\site-packages\requests\api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "E:\Programming\Python\VSC\lib\site-packages\requests\sessions.py", line 542, in request
    resp = self.send(prep, **send_kwargs)
  File "E:\Programming\Python\VSC\lib\site-packages\requests\sessions.py", line 655, in send
    r = adapter.send(request, **kwargs)
  File "E:\Programming\Python\VSC\lib\site-packages\requests\adapters.py", line 516, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='upos-sz-mirrorkodo.bilivideoo1.com', port=443): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x0000026E92F17F40>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed'))
```

I tried to ping this host but failed, and Google didn't give useful advice, could you please tell me why and how to deal with it? Thanks a lot.

This host is simply unreachable. It's not `requests` issue

To be honest, I know it, but why not? Even Windows doesn't recognize it(raise error when I ping it).
And it can be visit with browser.

It cannot be visited via browser, at least on my computer