APIs & SDKs
VPNDetection
Identify an IP as VPN, residential proxy, hosting, Tor, CDN or relay, with the operator and evidence behind each flag.
- 0community votes
- 1DR by Ahrefs no change since last check
- 2026founded
Ahrefs Domain Rating listed 6 Nov 2026, relisted 6 Nov 2026.
An API that classifies IP addresses as VPN, proxy, hosting, Tor, CDN or relay with evidence. Detects commercial VPNs, residential and datacenter proxies, mobile
What it is
VPNDetection: the homepage
VPNDetection classifies IP addresses with supporting evidence about their type and operator. The API identifies whether an address belongs to a commercial VPN (tracking over 2,200 providers), hosting or cloud infrastructure, Tor nodes, CDN edges, privacy relays like iCloud Private Relay, or various types of proxies including residential, datacenter, mobile and public proxies. Each classification includes confidence level (high, medium or low), the most recent observation date, and for proxies, metrics on how often the address appeared in a pool over a rolling 90-day window. Datasets rebuild daily to keep data current. The service offers an API for lookups and downloadable databases in CSVGZ or MMDB format for on-premises deployment.
Listed capabilities
- Detects VPNs with operator identification - tracks over 2,200 providers
- Detects Tor nodes with daily updates
- Identifies privacy relays and enterprise web gateways
- Confidence scoring for each classification
- Downloadable databases in CSVGZ and MMDB formats
- Location and ASN data with every lookup
- SDKs for 13 programming languages
- Real-time API with batch processing up to 1,000 addresses
Pricing
Pricing model: Freemium
Free: 50,000 lookups a month. Starter: $19.00/mo (250,000 lookups, then $0.09 per 1,000) or $190.00/year. Scale: $99.00/mo (2,000,000 lookups, then $0.07 per 1,000) or $990.00/year. Max: $199.00/mo (5,000,000 lookups, then $0.05 per 1,000) or $1,990.00/year. Enterprise: Custom pricing, annual.
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VPNDetection metrics
| Metric | Value |
|---|---|
| Domain Rating | 1 no change since last check |
| Trust Flow | 1 no change since last check |
| Citation Flow | 25 no change since last check |
| Referring domains | 32 no change since last check |
| External backlinks | 362 no change since last check |
Ahrefs Domain Rating listed 6 Nov 2026, relisted 6 Nov 2026. Listed under topic: Society/People (1). Majestic listed 6 Nov 2026, relisted 6 Nov 2026. Link data listed by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
VPNDetection domain listing data
Show the listing data
| Domain age | 1 year |
|---|---|
| Registered | |
| Expires | |
| Registrar | NameCheap, Inc. |
| DNSSEC | Not signed |
Before you launch
The playbook on SaaS Directory List lists what to prepare, what to post on launch day and where else to list your product.
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Quick answers
How do you know an address is a VPN?
From four kinds of evidence: scan where the VPN protocol is spoken to the address and a valid response received; scrape where the provider published the address; registry where registration and naming records attribute it; and infer where it was extrapolated from confirmed neighbors in the same block. The VPN IP Extended database names the method behind each range.
Will it flag my legitimate users?
No. Privacy relays like iCloud Private Relay and Google's VPN return as is_relay rather than is_vpn, and CDN edges as is_cdn. On paid plans, the evidence includes confidence, last seen date, and for proxies how often it appeared, allowing rules to block strong cases and challenge weaker ones.
Does it detect residential proxies?
Yes, on every paid plan. The is_resproxy flag identifies addresses seen in residential proxy pools, with evidence showing the provider, first and last seen dates, frequency, and how many providers resold the address. The flag persists after the address leaves the pool, so last_seen indicates whether it is recent.
How fresh is the data?
Every dataset rebuilds daily and the API uses those builds. Proxy evidence is counted over a rolling 90-day window. Addresses that leave a pool keep their flag with the last sighting evidence, so last_seen indicates whether an exit is recent or from months ago.
Can I download the data instead of calling the API?
Yes. Tor IP, Relay IP and Relay Provider are free under CC BY-SA 4.0 for all accounts. Other datasets are licensed per dataset on Enterprise plans. All download as CSVGZ or MMDB for on-premises lookups, and new builds can be delivered via webhook, AWS S3, Google Cloud Storage, Azure Blob Storage, or SFTP/FTPS servers.
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