ua-tracer by Paul Kinlan

trace NdaJacsB

ua-tracer

what does a user agent actually fetch, follow & run?

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Trace NdaJacsB

First seen: 2026-08-23 05:40:48.494 UTC
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Bot verification: Not a known bot (no IP-range check applies).

What this user agent did

Directly-referenced assets:

✗ fetched CSS ✓ fetched JS ✗ fetched image ✗ fetched font (HTML)

Document-level link hints:

✗ fetched favicon ✗ fetched apple-touch-icon ✗ fetched web manifest ✗ fetched preload ✗ fetched prefetch

Second-level follows (proves it parsed the linking file):

✗ followed CSS background-image ✗ followed CSS @font-face ✗ followed manifest icon ✗ followed CSS @import

Frames (does it descend into iframes?):

✗ fetched iframe document ✗ descended into iframe (loaded inner image)

Reporting (a report-only CSP is violated by inline styles; reports can arrive via HTTP headers with no JS, or via in-page beacons):

✗ sent a CSP/Reporting report (any path) ✗ delivered via report-uri/Report-To header (no JS) ✗ delivered via in-page beacon (securitypolicyviolation / ReportingObserver)

Social embed (Open Graph / Twitter card images):

✗ fetched og:image ✗ fetched twitter:image

JavaScript execution:

✗ EXECUTED classic JS ✗ EXECUTED ES module ✗ posted client timing

Server-side request waterfall

Every request the server received for this trace, in receive order. +ms is the delta from the homepage request.

ReceivedΔKindMethodUser-Agent
2026-08-23 05:40:48.494 UTC +0 ms homepage GET Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-41a38e31fb21fa54d5e5f571ea1e32a8-4f9a4e71641589ec-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-41a38e31fb21fa54d5e5f571ea1e32a8-686378f7e2675bdf-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-23 05:40:50.002 UTC +1508 ms JS GET Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
request headers (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "cookie": "ua-tracer-trace=NdaJacsB",
  "host": "uatracer.com",
  "traceparent": "00-267588d34bfe626b204f2ec2bfaa497e-6ed464c9954d1b54-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-267588d34bfe626b204f2ec2bfaa497e-ce9f7b2ce13158f3-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-23 05:40:50.022 UTC +1528 ms ES module GET Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
request headers (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "cookie": "ua-tracer-trace=NdaJacsB",
  "host": "uatracer.com",
  "traceparent": "00-5e81802cd80d9cb69d2ad8d6db4852c9-b3551feae6b2d847-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-5e81802cd80d9cb69d2ad8d6db4852c9-4813de694e0710ab-01",
  "x-deno-userspace-tracestate": ""
}