ua-tracer
by Paul Kinlan
trace 1o5lvNG9
what does a user agent actually fetch, follow & run?
Trace 1o5lvNG9
First seen: 2026-09-15 01:14:39.437 UTC
User-Agent: Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
Bot verification: ✓ verified Googlebot IP checked against published bot CIDR ranges; IP in Googlebot published range.
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 |
|---|---|---|---|---|
| 2026-09-15 01:14:39.437 UTC | +0 ms | homepage | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (11){
"accept": "text/html,application/xhtml+xml,application/signed-exchange;v=b3,application/xml;q=0.9,*/*;q=0.8",
"accept-encoding": "gzip, deflate, br",
"amp-cache-transform": "google;v=\"1..8\"",
"connection": "keep-alive",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"if-modified-since": "Mon, 14 Sep 2026 07:33:18 GMT",
"traceparent": "00-f5145c85b7a04769966fccbb141ab35c-e69cf2122c5cbe69-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
|
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| 2026-09-15 01:16:44.128 UTC | +124691 ms | iframe document | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (13){
"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=1o5lvNG9",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-c6828b2fff124d95226344f14b71645d-195bc957bfc89173-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-09-15 01:16:47.217 UTC | +127780 ms | prefetch | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
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=1o5lvNG9",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"sec-purpose": "prefetch",
"traceparent": "00-e105a5b26e7d09e0490f5451f83f1bdd-28f38f570348aa1d-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-e105a5b26e7d09e0490f5451f83f1bdd-02de4da489379358-01",
"x-deno-userspace-tracestate": ""
}
|
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| 2026-09-15 01:16:48.945 UTC | +129508 ms | JS | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
request headers (14){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=1o5lvNG9",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-b0b3eec3550f42da3ffa64472fd9b43a-b8d68920e8c85a03-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-b0b3eec3550f42da3ffa64472fd9b43a-80fd30825a87be69-01",
"x-deno-userspace-tracestate": ""
}
|
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| 2026-09-15 01:16:50.241 UTC | +130804 ms | CSS | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
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=1o5lvNG9",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-417c789d930dc75bc69e52dd6a8e7447-f6899815d40b5eb2-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-417c789d930dc75bc69e52dd6a8e7447-77747bc74a989f84-01",
"x-deno-userspace-tracestate": ""
}
|
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| 2026-09-15 01:16:54.409 UTC | +134972 ms | CSS @import (nested stylesheet) | GET | Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) |
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=1o5lvNG9",
"from": "googlebot(at)googlebot.com",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/1o5lvNG9/0R7Q0h93/style.css",
"traceparent": "00-636beab0b33ee004fe53a3dee244ba84-ffa761daa0d90b1a-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.7977.82 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-636beab0b33ee004fe53a3dee244ba84-9c17f58828e946d6-01",
"x-deno-userspace-tracestate": ""
}
|
||||