Two helper functions for dealing with abuseive IPs. `ip_is_abusive` checks if a provided IP address is abusive by using the AbuseIPDB API. `block_abusive_ips()` is a decorator for DRF view functions, which causes the view to respond with a 403 error if the IP is found to be abusive.

abuseipdb.py

import requests
import json
from functools import wraps

from django.conf import settings
from rest_framework.exceptions import PermissionDenied


def ip_is_abusive(ip_addr: str, api_key: str, threshold: int = 50) -> bool:
    """Check if the given IP has an abuse confidence score greater than the given threshold percentage."""

    # The AbuseIPDB API endpoint
    url = "https://api.abuseipdb.com/api/v2/check"

    querystring = {"ipAddress": ip_addr, "maxAgeInDays": "90"}

    headers = {
        "Accept": "application/json",
        "Key": api_key,
    }

    response = requests.request(
        method="GET", url=url, headers=headers, params=querystring
    )
    data = json.loads(response.text)
    return data["data"]["abuseConfidenceScore"] > threshold


def block_abusive_ips(threshold: int = 50, detail: str = None):
    """Check if the request is from an abusive IP and return a 403 error if it is.

    Since the request uses DRF's `Response`, you'll need to place the decorator after
    DRF's @api_view() decorator. For example:

    @api_view(['POST'])
    @block_abusive_ips()
    def contact_form(request):
    """

    if detail is None:
        detail = (
            "Your IP has been blocked since it has been reported to have a high risk of abuse."
            " If you think this is a mistake, try messaging us from another network and let us know."
        )

    def inner(orig_func):
        @wraps(orig_func)
        def _wrapper(request, *args, **kwargs):
            if ip_is_abusive(
                request.META["REMOTE_ADDR"],
                settings.ABUSEIPDB_API_KEY,
                threshold=threshold,
            ):
                raise PermissionDenied(detail=detail)
            return orig_func(request, *args, **kwargs)
        return _wrapper
    return inner