ua-tracer by Paul Kinlan

trace kYI36ED0

ua-tracer

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

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Trace kYI36ED0

First seen: 2026-09-02 01:01:51.959 UTC
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0
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
2026-09-02 01:01:51.959 UTC +0 ms homepage GET Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0
request headers (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br, zstd",
  "baggage": "sentry-trace_id=e22db130348a4a3c95997daa1d46f53e,sentry-environment=production,sentry-release=4ca953691832f8a9dafdbde5479bf56dbaa737a7,sentry-public_key=23937f3f7258dcfbab13359d58e4aef6,sentry-org_id=108499",
  "connection": "keep-alive",
  "host": "uatracer.com",
  "sentry-trace": "e22db130348a4a3c95997daa1d46f53e-b7ec3bbad9d1bf61",
  "traceparent": "00-3bcc02079b7b0a5a278aab2bd99ab54d-600e8c5b6383f3ae-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-b3-sampled": "0",
  "x-b3-spanid": "e0778073095b884d",
  "x-b3-traceid": "41ef6e622d18e6d180849b2a538c76f5",
  "x-deno-userspace-traceparent": "00-3bcc02079b7b0a5a278aab2bd99ab54d-fdcd425f18736ce9-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-02 01:01:53.994 UTC +2035 ms favicon GET Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0
request headers (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br, zstd",
  "baggage": "sentry-trace_id=4d851fd1588944f98be78bf0696c7fe7,sentry-environment=production,sentry-release=4ca953691832f8a9dafdbde5479bf56dbaa737a7,sentry-public_key=23937f3f7258dcfbab13359d58e4aef6,sentry-org_id=108499",
  "connection": "keep-alive",
  "host": "uatracer.com",
  "sentry-trace": "4d851fd1588944f98be78bf0696c7fe7-a325ac94ca6e4dc9",
  "traceparent": "00-32194062aec8cdb03dddc660940235e1-52e9c5750d745c0e-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-b3-sampled": "0",
  "x-b3-spanid": "b9804d2c47355253",
  "x-b3-traceid": "ab0a6299b2f23d21c954f214dcf1419a",
  "x-deno-userspace-traceparent": "00-32194062aec8cdb03dddc660940235e1-37f1023eabaf1462-01",
  "x-deno-userspace-tracestate": ""
}