IPLogs vs National Vulnerability Database

IPLogs scores an IP address's likelihood of being a VPN, proxy, Tor exit node, or datacenter host by combining 25+ signals -- ASN/PeeringDB classification, TCP/IP and TLS fingerprinting, RTT timing, and active probing -- into a single verdict and confidence score. A single keyless POST to /v1/check (optionally enriched with client-side signals like user-agent, timezone, and WebRTC IP) returns the verdict, a 0-1 risk score, and the matched signals with their weights, run by DigitalD.tech. There's no signup and no enforced rate limit today -- the public endpoint is explicitly fair-use, with dedicated deployments available on request for high-volume callers.

NIST's NVD API 2.0 is the government's canonical feed of CVE records, each enriched with CVSS scores, CPE product matches, CWE weakness types, and (where applicable) CISA Known Exploited Vulnerabilities flags. It's fully public and keyless, though a free API key lifts the rolling rate limit from 5 to 50 requests per 30 seconds, and NIST recommends polling by lastModStartDate/lastModEndDate rather than re-pulling the whole dataset. The stored URL pointed at a legacy JSON-feed changelog page; corrected to the current "Start Here" developer docs for the 2.0 REST API.