teamdev-dcblock 2.2.1

DC/VPN/Proxy/Tor IP Detector — TeamDev DCBlock @TEAM_X_OG On Telegram

🛡 TeamDev DCBlock v2.1

The most complete DC / VPN / Proxy / Tor IP detection engine for Python.

30+ live CIDR sources · Binary-search O(log n) lookup · Full geo enrichment · Built-in REST API · CLI · Multi-framework support

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What is DCBlock?

DCBlock is a Python library (and CLI tool) that tells you whether an IP address belongs to a datacenter, VPN, proxy, Tor exit node, or cloud provider. It does this by loading CIDR ranges from 30+ official sources (AWS, GCP, Azure, Hetzner, Cloudflare, etc.) and matching the IP against them in microseconds. On top of that, it enriches results with geo/ASN data, risk scores, reverse DNS, and more.

It's built for developers who need to:

• Block bots, scrapers, and automated traffic from their apps
• Detect datacenter IPs in fraud detection pipelines
• Build IP intelligence APIs
• Add security middleware to Flask / FastAPI / Django

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Install

pip install teamdev-dcblock

With Flask API support:

pip install "teamdev-dcblock[flask]"

With FastAPI support:

pip install "teamdev-dcblock[fastapi]"

Install everything:

pip install "teamdev-dcblock[all]"

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CLI

After installing, the dcblock command is available globally.

Check a single IP

dcblock check 3.108.66.217

  IP           3.108.66.217
  Status        HOSTING
  Risk Score    █████░░░░░ 50%
  Reason        hosting_flag
  Org / ISP     AWS EC2 (ap-south-1)
  ASN           AS16509 Amazon.com, Inc.
  Location      Mumbai, Maharashtra, India
  Reverse DNS   ec2-3-108-66-217.ap-south-1.compute.amazonaws.com
  Tags          hosting, datacenter-asn

Check multiple IPs (table view)

dcblock check 1.2.3.4 8.8.8.8 45.33.32.156

Check from a file

# ips.txt — one IP per line, # for comments
dcblock batch ips.txt

Export to JSON or CSV

dcblock check 1.2.3.4 8.8.8.8 --json
dcblock check 1.2.3.4 8.8.8.8 --csv --out results.csv
dcblock batch ips.txt --json --out results.json

Deep WHOIS-style enrichment

dcblock whois 8.8.8.8

Start the REST API server

dcblock serve --port 5000

Other commands

dcblock update        # Force refresh all CIDR lists
dcblock stats         # Show source statistics
dcblock check 1.2.3.4 --no-enrich   # CIDR-only, no geo lookup (faster)
dcblock check 1.2.3.4 --card        # Detailed card view

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Python API

Basic usage

from dcblock import DatacenterBlocker

blocker = DatacenterBlocker(enrich_asn=True).load()

result = blocker.check("3.108.66.217")

print(result.status_label())   # → HOSTING
print(result.risk_score)       # → 50
print(result.org)              # → Amazon.com
print(result.country)          # → India
print(result.is_datacenter)    # → True
print(result.to_dict())        # → full JSON-serializable dict

Bulk check

ips = ["1.2.3.4", "8.8.8.8", "45.33.32.156"]
results = blocker.check_bulk(ips)

for r in results:
    print(r.ip, r.status_label(), r.risk_score)

Async bulk check

import asyncio
from dcblock import DatacenterBlocker

blocker = DatacenterBlocker().load()

async def main():
    results = await blocker.async_check_bulk(["1.2.3.4", "8.8.8.8"])
    for r in results:
        print(r.ip, r.status_label())

asyncio.run(main())

Whitelist trusted IPs

blocker = DatacenterBlocker(
    whitelist={"10.0.0.0/8", "192.168.0.0/16"}
).load()

CIDR-only mode (no geo calls, fastest)

blocker = DatacenterBlocker(enrich_asn=False).load()
result  = blocker.check("3.108.66.217", enrich=False)

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Built-in REST API (Flask)

DCBlock ships with a fully-featured IP Intelligence REST API. You can start it in one line.

Option 1 — CLI (easiest)

dcblock serve --port 5000

Option 2 — Python

from dcblock import run_server

run_server(host="0.0.0.0", port=5000)

Option 3 — Integrate into your own Flask app

from flask import Flask
from dcblock import DatacenterBlocker, create_app

blocker = DatacenterBlocker(enrich_asn=True).load()
app = create_app(blocker=blocker)

# Add your own routes on top
@app.route("/my-route")
def my_route():
    return "hello"

app.run(port=5000)

API Endpoints

Method	Endpoint	Description
GET	/api/v1/check?ip=1.2.3.4	Check a single IP (query param)
GET	/api/v1/check/<ip>	Check a single IP (path param)
POST	/api/v1/bulk	Bulk check up to 50 IPs
GET	/api/v1/myip	Check the caller's own IP
GET	/api/v1/validate?ip=1.2.3.4	Validate IP format
GET	/api/v1/enrich?ip=1.2.3.4	Raw geo + ASN enrichment
GET	/api/v1/sources	List all 30+ CIDR sources
GET	/api/v1/stats	Engine statistics
GET	/api/v1/health	Health check + all endpoints list

Example responses

GET /api/v1/check?ip=3.108.66.217

{
  "ip": "3.108.66.217",
  "status": "HOSTING",
  "is_datacenter": true,
  "risk_score": 50,
  "reason": "hosting_flag",
  "org": "Amazon Technologies Inc.",
  "isp": "Amazon.com",
  "asn_number": "AS16509",
  "country": "India",
  "country_code": "IN",
  "city": "Mumbai",
  "region": "Maharashtra",
  "latitude": 19.076,
  "longitude": 72.8777,
  "reverse_dns": "ec2-3-108-66-217.ap-south-1.compute.amazonaws.com",
  "tags": ["hosting", "datacenter-asn"],
  "timestamp": "2026-04-20T06:20:44Z"
}

POST /api/v1/bulk

curl -X POST http://localhost:5000/api/v1/bulk \
  -H "Content-Type: application/json" \
  -d '{"ips": ["3.108.66.217", "8.8.8.8"], "enrich": true}'

{
  "total": 2,
  "checked": 2,
  "blocked": 1,
  "clean": 1,
  "results": [...]
}

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Framework Middleware

Flask — block datacenter IPs

from flask import Flask
from dcblock import DatacenterBlocker, make_flask_middleware

blocker = DatacenterBlocker().load()
app     = Flask(__name__)
app     = make_flask_middleware(app, blocker, trusted_proxies={"127.0.0.1"})

Datacenter IPs get a 403 Forbidden JSON response automatically:

{"error": "access_denied", "reason": "hosting_flag", "status": "HOSTING"}

FastAPI

from fastapi import FastAPI
from dcblock import DatacenterBlocker, make_fastapi_middleware

blocker = DatacenterBlocker().load()
app     = FastAPI()
app.add_middleware(make_fastapi_middleware(blocker))

Django

# middleware.py
from dcblock import DatacenterBlocker, make_django_middleware

blocker = DatacenterBlocker().load()
DatacenterMiddleware = make_django_middleware(blocker)

# settings.py
MIDDLEWARE = [
    "myapp.middleware.DatacenterMiddleware",
    ...
]

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CheckResult fields

Field	Type	Description
ip	str	Input IP address
is_datacenter	bool	True if blocked
status_label()	str	CLEAN / DATACENTER / HOSTING / PROXY / VPN / TOR
risk_score	int	0–100 risk score
reason	str	cidr_match / hosting_flag / proxy / asn_keyword / tor
source	str	Which source list matched
org	str	Organization name
isp	str	ISP name
asn	str	ASN name
asn_number	str	ASN number (e.g. AS16509)
country	str	Country full name
country_code	str	2-letter ISO code
city	str	City
region	str	Region / state
latitude	float	Geo latitude
longitude	float	Geo longitude
reverse_dns	str	rDNS hostname
is_tor	bool	Tor exit node
is_proxy	bool	Proxy detected
is_vpn	bool	VPN detected
is_hosting	bool	Cloud hosting flag
tags	list	e.g. ["proxy", "hosting", "cidr-blocklist"]
checked_at	float	Unix timestamp

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Sources (30+)

Provider	Category
Amazon AWS	cloud
Google Cloud	cloud
Microsoft Azure	cloud
DigitalOcean	cloud
Vultr	cloud
Oracle Cloud	cloud
Linode / Akamai	cloud
Hetzner	cloud
OVH / OVHcloud	cloud
Contabo	cloud
Leaseweb	cloud
IBM Cloud / SoftLayer	cloud
Alibaba Cloud	cloud
Tencent Cloud	cloud
Huawei Cloud	cloud
Scaleway	cloud
Choopa / Virtus Strong	cloud
ColoCrossing	cloud
Cloudflare IPv4 + IPv6	cdn
Fastly CDN	cdn
Heroku (Salesforce)	paas
Render.com	paas
Railway.app	paas
Vercel	paas
Netlify	paas
GitHub Actions / Pages	devops
M247 / VPN Hosting	vpn_hosting
Tor Exit Nodes	anonymizer
Spamhaus DROP (hijacked)	abuse

All sources auto-refresh every 24 hours and are cached locally. Fallback CIDRs are bundled for sources that occasionally go offline.

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Docker

docker-compose up -d
# REST API available at http://localhost:8000

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Environment variables

Variable	Default	Description
DC_BLOCK_CACHE	/tmp/dc_block_cache	Cache directory
DC_BLOCK_TTL_HOURS	24	Cache TTL in hours

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Support & Issues

Having trouble? Found a bug? Something not working?

Please send a message with your error + a screenshot to:

👉 https://t.me/Team_X_Og

We're active on Telegram and will help you out.

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Donate

If DCBlock has saved you time or is part of your project, consider supporting the work:

💸 https://pay.teamdev.sbs

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TeamDev · @MR_ARMAN_08 · @TEAM_X_OG