ua-tracer by Paul Kinlan

trace rZ65MOX9

ua-tracer

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

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Trace rZ65MOX9

First seen: 2026-10-18 21:12:51.769 UTC
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0
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
2026-10-18 21:12:51.769 UTC +0 ms homepage GET Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0
request headers (12) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "accept-encoding": "gzip, br, deflate",
  "accept-language": "en-US,en;q=0.5",
  "host": "uatracer.com",
  "referer": "http://uatracer.com/",
  "traceparent": "00-56a3daf01d46b3f18c6255d6b105abd0-d03fa4470ab0abde-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-56a3daf01d46b3f18c6255d6b105abd0-1c93e14dbc762cd6-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-18 21:12:52.201 UTC +432 ms ES module GET Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0
request headers (12) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "accept-encoding": "gzip, br, deflate",
  "accept-language": "en-US,en;q=0.5",
  "host": "uatracer.com",
  "referer": "http://uatracer.com/r/rZ65MOX9/wfqe19D1/module.js",
  "traceparent": "00-b9a813c6ba500f3a29929b920014b328-1eff4d20001c3fc5-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-b9a813c6ba500f3a29929b920014b328-9ea78780002d4148-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-18 21:12:52.521 UTC +752 ms web app manifest GET Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0
request headers (12) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "accept-encoding": "gzip, br, deflate",
  "accept-language": "en-US,en;q=0.5",
  "host": "uatracer.com",
  "referer": "http://uatracer.com/r/rZ65MOX9/wfqe19D1/manifest.json",
  "traceparent": "00-63cded2552a21811738fefa40930d134-e9912f4c0aa685e1-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-63cded2552a21811738fefa40930d134-da7be66703b097a4-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-18 21:12:52.917 UTC +1148 ms JS GET Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0
request headers (12) 
{
  "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
  "accept-encoding": "gzip, br, deflate",
  "accept-language": "en-US,en;q=0.5",
  "host": "uatracer.com",
  "referer": "http://uatracer.com/r/rZ65MOX9/wfqe19D1/main.js",
  "traceparent": "00-7e2ad465e3e5405b14404b79e51e0d67-9bfd42177e4ca8c5-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:133.0) Gecko/20100101 Firefox/133.0",
  "via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-7e2ad465e3e5405b14404b79e51e0d67-3f7fe1708c0fcbff-01",
  "x-deno-userspace-tracestate": ""
}