ua-tracer by Paul Kinlan

trace vMM0FjOb

ua-tracer

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

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Trace vMM0FjOb

First seen: 2026-11-06 14:21:12.602 UTC
User-Agent: Mozilla/5.0 (compatible; pathscan/1.0)
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
2026-11-06 14:21:12.602 UTC +0 ms homepage GET Mozilla/5.0 (compatible; pathscan/1.0)
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-70a92a7689cee8528bd23e39be765a1b-0a9e5c60b6aab62a-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; pathscan/1.0)",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-70a92a7689cee8528bd23e39be765a1b-9de3494e83a0d750-01",
  "x-deno-userspace-tracestate": ""
}
2026-11-06 14:21:16.743 UTC +4141 ms ES module GET Mozilla/5.0 (compatible; pathscan/1.0)
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-9fd7d82701fa29110fb619c163e7ce6c-fa91d688f3883633-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; pathscan/1.0)",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-9fd7d82701fa29110fb619c163e7ce6c-a8343037ac07d987-01",
  "x-deno-userspace-tracestate": ""
}
2026-11-06 14:21:16.756 UTC +4154 ms JS GET Mozilla/5.0 (compatible; pathscan/1.0)
request headers (9) 
{
  "accept": "*/*",
  "accept-encoding": "gzip",
  "host": "uatracer.com",
  "traceparent": "00-4943a38f05a7f5c0ab8aa2b3148ac104-eef25dd8ee3d435c-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; pathscan/1.0)",
  "via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-4943a38f05a7f5c0ab8aa2b3148ac104-f323713feb0857ec-01",
  "x-deno-userspace-tracestate": ""
}