VelocityVerify provides high-throughput, edge-distributed HTTP endpoints designed for active broadband measurement, round-trip latency probing, and multi-CDN queue telemetry.
All endpoints are served over HTTP/2 and HTTP/3 with transport encryption (TLS 1.3). Cross-Origin Resource Sharing (CORS) is enabled globally with permissive headers to allow browser workers and telemetry scripts to measure network conditions without origin friction.
CORS Header Guarantee: Every endpoint returns Access-Control-Allow-Origin: * and Timing-Allow-Origin: *, permitting Resource Timing API extraction in modern diagnostic browsers.
Checks the operational status of the nearest measurement node, clock synchronization, and telemetry pipeline availability.
Resolves client network transport metadata, including public IP, detected ISP Autonomous System Number (ASN), and coarse geographic region.
Zero-payload round-trip probe. When called via GET, it returns an empty body (0 bytes) with zero cache to measure pristine round-trip time (RTT) and bufferbloat latency deltas under saturation. When called via POST, it consumes uploaded byte streams without disk I/O to benchmark upstream throughput.
Streams synthetic pseudorandom bytes engineered to resist inline hardware compression. Diagnostic workers open 4 to 16 concurrent HTTP streams against this endpoint to fill the TCP bandwidth-delay product (BDP).
Query Parameters: ckSize (integer between 1 and 100, representing megabytes per chunk).
Ingests anonymized diagnostic summaries to power the Global ISP Performance Index. Does not record full IP addresses or personal identifiers.
To prevent denial-of-service and preserve test fairness, edge nodes enforce a tiered token-bucket rate limiter:
/api/empty and /api/health./api/garbage are capped at 500 MB per origin IP per 10-minute window unless operating via designated peering agreements.For custom telemetry integrations or dedicated test nodes, review our Methodology or reach out via our Contact Us page.