IP lookup guide + live tool

How to Tell If an IP Is a Proxy

Check the address first, then read the proxy, VPN, Tor, datacenter, network, risk, and evidence fields together. CreepJS keeps the live result separate from interpretation so conflicting signals remain visible.

Free · no signup

Check an IP now

Submit one IPv4 or IPv6 address. The address is used for this lookup and is never sent to analytics.

Hostnames, URLs, and IP ranges are not accepted.

How can you tell if an IP is a proxy?

CreepJS checks direct proxy, VPN, and Tor flags, then adds datacenter ownership, routing, risk, and evidence context. Several agreeing signals support a proxy classification; a negative flag alone does not prove an address is residential, direct, trusted, or benign.

Read the result as a set of signals

A useful decision keeps direct classifications, infrastructure context, and supporting evidence distinct. Do not turn a datacenter flag or a low risk score into a claim the data does not make.

Proxy, VPN, or Tor

A returned flag is direct proxy-related evidence for this classification. Check the evidence labels and confidence before acting.

Datacenter or hosting

Infrastructure ownership can support a proxy hypothesis, but a server address is not automatically an anonymous proxy.

Network and routing

ASN, owner, prefix, and RPKI context help you understand who announces the address and whether signals agree.

Risk and evidence

Risk bands summarize several inputs. Evidence rows are more useful than treating one score as a fraud probability.

Start with direct flags

Proxy, VPN, and Tor booleans answer the narrow classification question. Their absence means “not flagged by the current data,” not “known to be a normal household connection.”

Check network context

Compare the ASN, organization, usage type, datacenter status, announced prefix, and routing details. This context can explain why a direct flag exists or why the result is ambiguous.

Inspect the evidence

Evidence rows expose the labels, severity, and confidence returned for the address. Prefer those concrete inputs over a single score when signals disagree.

Classification limits

IP ownership and exit behavior change. Commercial VPNs, residential relays, corporate gateways, and newly reassigned ranges may be missing or classified differently over time. Treat the result as one input to a proportionate decision, not as identity proof or a reason to block someone automatically.

CreepJS retrieves the fields from IPbot through its own privacy-filtered Worker. Standard results may be cached for up to 24 hours; elevated-risk results use a shorter cache. Review the IPbot response schema for the upstream field definitions.

Need the complete network report?

Open the full checker for geolocation, ASN, routing, risk, evidence, share links, and batch tools.

Open IP Risk Checker

Continue your privacy and network review

Move from proxy-oriented evidence to the full IP report, browser fingerprint checker, or implementation documentation.