trace rM4FNlQE
what does a user agent actually fetch, follow & run?
Trace rM4FNlQE
First seen: 2026-10-11 18:16:01.780 UTC
User-Agent: Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)
Bot verification: Not a known bot (no IP-range check applies).
What this user agent did
Directly-referenced assets:
Document-level link hints:
Second-level follows (proves it parsed the linking file):
Frames (does it descend into iframes?):
Reporting (a report-only CSP is violated by inline styles; reports can arrive via HTTP headers with no JS, or via in-page beacons):
Social embed (Open Graph / Twitter card images):
JavaScript execution:
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 |
|---|---|---|---|---|
| 2026-10-11 18:16:01.780 UTC | +0 ms | homepage | GET | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (19){
"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, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"host": "uatracer.com",
"pragma": "no-cache",
"priority": "u=0, i",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "document",
"sec-fetch-mode": "navigate",
"sec-fetch-site": "none",
"sec-fetch-user": "?1",
"traceparent": "00-3e323c4e0d2aefb29584a1f90ddabe10-363a0cf2ee12ed22-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-11 18:16:03.407 UTC | +1627 ms | CSS | GET | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (19){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"cookie": "[redacted]",
"host": "uatracer.com",
"pragma": "no-cache",
"priority": "u=0",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "style",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-7c423fb7ef9526d31a90a1bdec5e4ded-49cb841f923ae3a0-01",
"tracestate": "",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-11 18:16:03.417 UTC | +1637 ms | prefetch | GET | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (20){
"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, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"cookie": "[redacted]",
"host": "uatracer.com",
"pragma": "no-cache",
"priority": "u=4, i",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"sec-purpose": "prefetch",
"traceparent": "00-ffac9a4a07a8709decae179bf7596fd0-ff30c81665ac5930-01",
"tracestate": "",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-11 18:16:06.464 UTC | +4684 ms | JS | GET | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (19){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"cookie": "[redacted]",
"host": "uatracer.com",
"pragma": "no-cache",
"priority": "u=1",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "script",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-b79b6d9af27adc32b517e2e22a7acdce-3933921780b6ece2-01",
"tracestate": "",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-11 18:16:06.467 UTC | +4687 ms | ES module | GET | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (20){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"pragma": "no-cache",
"priority": "u=1",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "script",
"sec-fetch-mode": "cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-9c4e77e246e4e3437b946604cfd215e2-a0f978e1ce0e3c17-01",
"tracestate": "",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-11 18:16:06.468 UTC | +4688 ms | iframe document | GET | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (20){
"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, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"cookie": "[redacted]",
"host": "uatracer.com",
"pragma": "no-cache",
"priority": "u=0, i",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "iframe",
"sec-fetch-mode": "navigate",
"sec-fetch-site": "same-origin",
"traceparent": "00-455e3633af1a2e3f248e16594d8eb426-10697350feec055c-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-11 18:16:06.647 UTC | +4867 ms | CSS @import (nested stylesheet) | GET | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (19){
"accept": "text/css,*/*;q=0.1",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"cookie": "[redacted]",
"host": "uatracer.com",
"pragma": "no-cache",
"priority": "u=0",
"referer": "https://uatracer.com/r/rM4FNlQE/c7Sk8fYC/style.css",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "style",
"sec-fetch-mode": "no-cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-99ce1d717e3378537bb65df1e8f73e12-5ab83e9e4a42d6b2-01",
"tracestate": "",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-11 18:16:07.051 UTC | +5271 ms | CSP violation report (POST) | POST | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (23){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"content-length": "353",
"content-type": "application/json",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"pragma": "no-cache",
"priority": "u=4, i",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-ac41d4e59d72b1d65e2c169e34ea83aa-780c0b03203ba042-01",
"tracestate": "",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-report-body": "{\"source\":\"securitypolicyviolation\",\"violatedDirective\":\"style-src-attr\",\"effectiveDirective\":\"style-src-attr\",\"blockedURI\":\"inline\",\"documentURI\":\"https://uatracer.com/\",\"disposition\":\"report\",\"lineNumber\":45,\"sourceFile\":\"https://uatracer.com/r/rM4FNlQE/c7Sk8fYC/main.js\",\"ua\":\"Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)\"}"
}
|
||||
| 2026-10-11 18:16:07.055 UTC | +5275 ms | Reporting API report (POST) | POST | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (23){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"content-length": "2146",
"content-type": "application/json",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"pragma": "no-cache",
"priority": "u=4, i",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-46b706f83598e48d9a57361c76b5f9ba-64543dae4d145ee3-01",
"tracestate": "",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-report-body": "{\"source\":\"ReportingObserver\",\"reports\":[{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":9,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-elem\",\"originalPolicy\":\"style-src 'self'; report-uri /r/rM4FNlQE/c7Sk8fYC/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":243,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/rM4FNlQE/c7Sk8fYC/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":247,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/rM4FNlQE/c7Sk8fYC/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/\",\"lineNumber\":755,\"columnNumber\":0,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/rM4FNlQE/c7Sk8fYC/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/r/rM4FNlQE/c7Sk8fYC/main.js\",\"lineNumber\":45,\"columnNumber\":11,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/rM4FNlQE/c7Sk8fYC/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}}],\"ua\":\"Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)\"}"
}
|
||||
| 2026-10-11 18:16:07.813 UTC | +6033 ms | client timing POST | POST | Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07) |
request headers (22){
"accept": "*/*",
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "en-US,en;q=0.9",
"cache-control": "no-cache",
"content-length": "2726",
"content-type": "application/json",
"cookie": "[redacted]",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"pragma": "no-cache",
"priority": "u=4, i",
"referer": "https://uatracer.com/",
"sec-ch-ua": "\"Not/A)Brand\";v=\"99\", \"Chromium\";v=\"148\"",
"sec-ch-ua-mobile": "?0",
"sec-ch-ua-platform": "\"Windows\"",
"sec-fetch-dest": "empty",
"sec-fetch-mode": "cors",
"sec-fetch-site": "same-origin",
"traceparent": "00-afa32f6c6f1f1c6fb4c5936b8373de26-8b9afc78d4761a23-01",
"tracestate": "",
"user-agent": "Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-17 19:36:27.408 UTC | +523225628 ms | iframe document | GET | Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1 |
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,zh;q=0.9,en-US;q=0.8,en;q=0.7",
"cache-control": "no-cache",
"connection": "keep-alive, close",
"host": "uatracer.com",
"pragma": "no-cache",
"traceparent": "00-843ae93d8ff7945f65129dca370a40da-f018243b03605fbc-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-17 19:46:20.238 UTC | +523818458 ms | font (HTML) | GET | Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1 |
request headers (14){
"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,zh;q=0.9,en-US;q=0.8,en;q=0.7",
"cache-control": "no-cache",
"connection": "keep-alive, close",
"host": "uatracer.com",
"pragma": "no-cache",
"traceparent": "00-56bf6b295c54b6c896aed465ff6b38ca-2f6b0b48b5f6990f-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-56bf6b295c54b6c896aed465ff6b38ca-9364b0cb696b563f-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-10-17 19:55:21.899 UTC | +524360119 ms | CSP violation report (POST) | GET | Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1 |
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,zh;q=0.9,en-US;q=0.8,en;q=0.7",
"cache-control": "no-cache",
"connection": "keep-alive, close",
"host": "uatracer.com",
"pragma": "no-cache",
"traceparent": "00-50ec5f22101944e81e9c0cdb48d42fe8-75beccc0fc808a6a-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-10-17 20:18:38.162 UTC | +525756382 ms | CSS @font-face | GET | Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1 |
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,zh;q=0.9,en-US;q=0.8,en;q=0.7",
"cache-control": "no-cache",
"connection": "keep-alive, close",
"host": "uatracer.com",
"pragma": "no-cache",
"traceparent": "00-0e1363ab5dbf699df702e4f8c3077b9d-b194003ccb1b6608-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1",
"via": "HTTP/1.1 ord.vultr.prod.deno-cluster.net"
}
|
||||
Client-side resource waterfall
Reported by performance.getEntriesByType('resource') after JS ran in the UA. This proves a real
browser-grade engine, not just a downloader.
| Resource | Initiator | Start | Duration | Timeline |
|---|---|---|---|---|
| link | 6628ms | 3383ms | ||
| link | 6629ms | 133ms | ||
| link | 6629ms | 133ms | ||
| link | 6638ms | 3374ms | ||
| iframe | 9826ms | 365ms | ||
| img | 9826ms | 20ms | ||
| script | 9827ms | 268ms | ||
| script | 9827ms | 365ms | ||
| css | 10020ms | 301ms | ||
| img | 10348ms | 28ms | ||
| css | 10350ms | 42ms | ||
| css | 10350ms | 43ms | ||
| beacon | 10379ms | 295ms | ||
| beacon | 10381ms | 396ms | ||
| img | 10383ms | 34ms | ||
| other | 10438ms | 9ms |