ua-tracer
by Paul Kinlan
trace OXVlsDoK
what does a user agent actually fetch, follow & run?
Trace OXVlsDoK
First seen: 2026-10-28 07:37:55.909 UTC
User-Agent: Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
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 |
|---|---|---|---|---|
| 2026-10-28 07:37:55.909 UTC | +0 ms | homepage | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (10){
"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",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"host": "uatracer.com",
"traceparent": "00-816610dea91472dff5b5ce6da5ef7132-e658abc1ce62d439-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-28 07:38:01.455 UTC | +5546 ms | font (HTML) | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (14){
"accept": "*/*",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-f42ff8d22325bad6841da61b8af4ecab-40d144436466a534-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-f42ff8d22325bad6841da61b8af4ecab-fe9b6c1861d5cc08-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:01.499 UTC | +5590 ms | preload (image) | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (13){
"accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-94199475e3b78a10a8e5bcaea4de8a8f-77d1fc2d2040f559-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-94199475e3b78a10a8e5bcaea4de8a8f-96fa67c39ff699ee-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:01.522 UTC | +5613 ms | iframe document | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (12){
"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",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-bf1d0187c5d95a0eeabef34894ad7025-54fe39f9a13fcf7c-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-28 07:38:01.551 UTC | +5642 ms | prefetch | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.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",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-bfcb8c2119d16f7d56604ccfdbe20da5-7663bd9135b6d3c0-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-bfcb8c2119d16f7d56604ccfdbe20da5-f486d613317c53ab-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:01.583 UTC | +5674 ms | ES module | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-b744e8804c1319a058bc0c86812bbd6f-86bfba3598aadc16-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-28 07:38:01.592 UTC | +5683 ms | JS | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (13){
"accept": "*/*",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-d3ab776034e7cd53a3f961c3432c9f3a-511ebd25f600c1e3-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-d3ab776034e7cd53a3f961c3432c9f3a-29ec3611aca2e696-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:01.611 UTC | +5702 ms | image | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (13){
"accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-62d9de49793d5e3afe4075293a24485a-a9a3baae3d031077-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-62d9de49793d5e3afe4075293a24485a-da4d0f6cf3508f8b-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:01.621 UTC | +5712 ms | CSS | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (13){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-26eebca1832ed9a0d1d10f988f758819-b64a9f9703254068-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-26eebca1832ed9a0d1d10f988f758819-772275cccb71aea3-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:04.743 UTC | +8834 ms | CSS @import (nested stylesheet) | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (11){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/OXVlsDoK/rYCTeKkL/style.css",
"traceparent": "00-a4b0fe9de0abdaee81b49af2ef034584-31b80e75d0882c0a-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-28 07:38:05.135 UTC | +9226 ms | image inside iframe | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (11){
"accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/OXVlsDoK/rYCTeKkL/iframe",
"traceparent": "00-7ce685a07158615ba36b421527c7fe12-33e0ce1b2fbb4782-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-28 07:38:06.135 UTC | +10226 ms | ES module executed | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (13){
"accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-0ad0c8bcb27ac9563a19bb8fbc519509-6323e4b1cfd091c0-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-0ad0c8bcb27ac9563a19bb8fbc519509-148c6ea54cb4c8b9-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:06.139 UTC | +10230 ms | Reporting API report (POST) | POST | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (16){
"accept": "*/*",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"content-length": "0",
"content-type": "application/json",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-64205f68e7025fdbb316becfa9382c2f-2f3b6b818bc74339-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-64205f68e7025fdbb316becfa9382c2f-4477d62358e35059-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:06.186 UTC | +10277 ms | CSP violation report (POST) | POST | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (16){
"accept": "*/*",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"content-length": "0",
"content-type": "application/json",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-c70033216912071748834b1db15f36d2-17c554ff6d602bdd-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-c70033216912071748834b1db15f36d2-28269ee6310f66f5-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:06.187 UTC | +10278 ms | CSS @font-face | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (12){
"accept": "*/*",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/r/OXVlsDoK/rYCTeKkL/style.css",
"traceparent": "00-2d5c8465a2428b1b0960f46bc6a80f0f-aaf43e8cd3ef57d3-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-28 07:38:06.206 UTC | +10297 ms | JS executed beacon | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (13){
"accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-3fbb7efc7c087c0bd15d0ed4287d0b6d-8cc45f6dfd1f052d-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-3fbb7efc7c087c0bd15d0ed4287d0b6d-0dac48bf06bc29e6-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-28 07:38:06.740 UTC | +10831 ms | CSS background-image | GET | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (11){
"accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"cookie": "[redacted]",
"host": "uatracer.com",
"referer": "https://uatracer.com/r/OXVlsDoK/rYCTeKkL/style.css",
"traceparent": "00-7549314870aa931a8bc15b170ab0e4a6-5b118c3f34a347ec-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-28 07:38:10.439 UTC | +14530 ms | client timing POST | POST | Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html) |
request headers (16){
"accept": "*/*",
"accept-encoding": "gzip",
"accept-language": "zh-CN,en;q=0.9,en-GB;q=0.8,en-US;q=0.7,fr;q=0.6",
"connection": "Close",
"content-length": "0",
"content-type": "application/json",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-aaee7cb2234bfeb0bd9daedaefb736d5-54d086529e8a7cf9-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-aaee7cb2234bfeb0bd9daedaefb736d5-5dda5bf772c80088-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-30 07:32:12.154 UTC | +172456245 ms | iframe document | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36 |
request headers (9){
"accept-encoding": "gzip,deflate",
"connection": "close",
"host": "uatracer.com",
"traceparent": "00-7ed9be3d1dea21f1521afcabf49bc6bf-472a13a5edcfa8f9-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-7ed9be3d1dea21f1521afcabf49bc6bf-bc2ab6467b0d3a5e-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-30 07:32:16.106 UTC | +172460197 ms | image inside iframe | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36 |
request headers (7){
"accept-encoding": "gzip,deflate",
"connection": "close",
"host": "uatracer.com",
"traceparent": "00-7b30dc0845478099b9cd47861b50d4bb-fdfa66194536ff6b-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-11-02 05:11:52.183 UTC | +423236274 ms | iframe document | GET | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Reflectionbot/1.0; +https://reflection.ai/bot) Chrome/151.0.0.0 Safari/537.36 |
request headers (13){
"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
"accept-encoding": "gzip,deflate,br",
"accept-language": "en-US,en;q=0.9",
"host": "uatracer.com",
"sec-fetch-dest": "document",
"sec-fetch-mode": "navigate",
"sec-fetch-site": "none",
"sec-fetch-user": "?1",
"traceparent": "00-6a6557c75b5cdb3754b7ed88cdb056ec-5424a7abb0550cdf-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Reflectionbot/1.0; +https://reflection.ai/bot) Chrome/151.0.0.0 Safari/537.36",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
Client-side resource waterfall
JS executed (beacon hit) but no resource-timing payload was posted (UA may block sendBeacon/fetch or strip the body).