The source library
Sources and vendor reading
Product pages define scope, docs define fields and pricing defines access. Educational vendor articles add context to the comparison.
ShieldLabs
Primary sources for the ShieldLabs review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- Vendor guide and product context · checked October 23, 2026
IPQualityScore
Primary sources for the IPQualityScore review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- Vendor guide and product context · checked October 23, 2026
Fingerprint
Primary sources for the Fingerprint review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- Vendor guide and product context · checked October 23, 2026
Spur
Primary sources for the Spur review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- Vendor guide and product context · checked October 23, 2026
IPinfo
Primary sources for the IPinfo review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- Vendor guide and product context · checked October 23, 2026
proxycheck.io
Primary sources for the proxycheck.io review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- v3 API release and response contract · checked October 23, 2026
ipregistry
Primary sources for the ipregistry review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- Vendor guide and product context · checked October 23, 2026
ipgeolocation.io
Primary sources for the ipgeolocation.io review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- Vendor guide and product context · checked October 23, 2026
MaxMind
Primary sources for the MaxMind review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- Vendor guide and product context · checked October 23, 2026
IP2Location
Primary sources for the IP2Location review, integration and access conditions.
- Product and detection approach · checked October 23, 2026
- Pricing and access · checked October 23, 2026
- Integration and result documentation · checked October 23, 2026
- IP2Proxy hosted-service migration and legacy API documentation · checked October 23, 2026
Technical reading
- SOCKS version 5: protocol behavior.
- MDN: X-Forwarded-For: trusted request-address handling.
- Apple Private Relay: legitimate privacy connections.
- Residential-proxy research: the paper cited in the earlier study notes.
Product sources checked October 23, 2026. Earlier study figures have their own period in the study record.