ua-tracer
by Paul Kinlan
trace NxzC9z8e
what does a user agent actually fetch, follow & run?
Trace NxzC9z8e
First seen: 2026-09-22 02:04:25.767 UTC
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 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.
| Received | Δ | Kind | Method | User-Agent |
|---|---|---|---|---|
| 2026-09-22 02:04:25.767 UTC | +0 ms | homepage | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36 |
request headers (9){
"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"accept-encoding": "gzip, deflate, br",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"traceparent": "00-0a5cac7aa6c97d4d80940c08b4f9d674-a6227e174fe322ff-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-09-22 02:04:28.220 UTC | +2453 ms | ES module | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36 |
request headers (15){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=NxzC9z8e",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-e981b490c929bfc8879e79f6742773c9-d21624382d5e99b9-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-e981b490c929bfc8879e79f6742773c9-b5a080234846cf2d-01",
"x-deno-userspace-tracestate": ""
}
|
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| 2026-09-22 02:04:28.984 UTC | +3217 ms | JS | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36 |
request headers (14){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=NxzC9z8e",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-3ff2d0f97cebdf5d808750e33408ac6b-2cb4c83b72e61f15-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-3ff2d0f97cebdf5d808750e33408ac6b-cd18a8ed065b1329-01",
"x-deno-userspace-tracestate": ""
}
|
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| 2026-09-22 02:04:29.651 UTC | +3884 ms | CSS | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36 |
request headers (14){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=NxzC9z8e",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-a42ec31c69beed427377e642798e83fe-53cd967380d06821-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-a42ec31c69beed427377e642798e83fe-fe537e48e150fc01-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-22 02:04:30.476 UTC | +4709 ms | prefetch | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36 |
request headers (15){
"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=NxzC9z8e",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"sec-purpose": "prefetch",
"traceparent": "00-bfd51f6df38b7aea0dbf34c0cf00c041-07292d4aee04acd2-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-bfd51f6df38b7aea0dbf34c0cf00c041-2153bb31b3bd30ca-01",
"x-deno-userspace-tracestate": ""
}
|
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| 2026-09-22 02:04:31.239 UTC | +5472 ms | iframe document | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36 |
request headers (15){
"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=NxzC9z8e",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-d2647f894e172427200aff81904a2fba-2046d902d9b00f10-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-d2647f894e172427200aff81904a2fba-24034ffa32827cb5-01",
"x-deno-userspace-tracestate": ""
}
|
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| 2026-09-22 02:04:32.019 UTC | +6252 ms | CSS @import (nested stylesheet) | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36 |
request headers (14){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=NxzC9z8e",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/NxzC9z8e/7f3bN7IT/style.css",
"traceparent": "00-8179b7ba46277bd871f1f7206f4ff146-c92258637495757d-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; GoogleOther) Chrome/153.0.8010.52 Safari/537.36",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-8179b7ba46277bd871f1f7206f4ff146-0bfc103459ab24d3-01",
"x-deno-userspace-tracestate": ""
}
|
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