ua-tracer
by Paul Kinlan
trace D6Iyogek
what does a user agent actually fetch, follow & run?
Trace D6Iyogek
First seen: 2026-09-21 03:14:48.200 UTC
User-Agent: Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0
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.
| Received | Δ | Kind | Method | User-Agent |
|---|---|---|---|---|
| 2026-09-21 03:14:48.200 UTC | +0 ms | homepage | GET | Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 |
request headers (9){
"accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
"accept-encoding": "gzip,deflate",
"connection": "keep-alive",
"from": "support@search.yandex.ru",
"host": "uatracer.com",
"traceparent": "00-5066a351a63504ff601d227288dcfda2-9a3fb66e107291c5-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-09-21 03:14:51.472 UTC | +3272 ms | Reporting API report (POST) | POST | Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/138.0.0.0 YaBrowser/25.8.0.0 Safari/537.36 |
request headers (15){
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "ru,en;q=0.9",
"content-length": "534",
"content-type": "application/reports+json",
"cookie": "ua-tracer-trace=D6Iyogek",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"priority": "u=4, i",
"traceparent": "00-b11b026c5eaca98fb1d7988a50ca4e54-038d8d143d107352-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/138.0.0.0 YaBrowser/25.8.0.0 Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-b11b026c5eaca98fb1d7988a50ca4e54-bd3b7f930b777e44-01",
"x-deno-userspace-tracestate": "",
"x-report-body": "[{\"age\":1,\"body\":{\"blockedURL\":\"inline\",\"disposition\":\"report\",\"documentURL\":\"https://uatracer.com/\",\"effectiveDirective\":\"style-src-elem\",\"lineNumber\":9,\"originalPolicy\":\"style-src 'self'; report-uri /r/D6Iyogek/LSaDo5wy/csp-report; report-to ua-tracer\",\"referrer\":\"\",\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"statusCode\":200},\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"user_agent\":\"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/138.0.0.0 YaBrowser/25.8.0.0 Safari/537.36\"}]"
}
|
||||
| 2026-09-21 03:14:51.874 UTC | +3674 ms | ES module | GET | Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 |
request headers (14){
"accept": "*/*",
"accept-encoding": "gzip,deflate",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=D6Iyogek",
"from": "support@search.yandex.ru",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-83edb9222a8e07be1711b9dc5f766e16-0728846680e8788a-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-83edb9222a8e07be1711b9dc5f766e16-a9b8388355ecd52e-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 03:14:52.248 UTC | +4048 ms | iframe document | GET | Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 |
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,deflate",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=D6Iyogek",
"from": "support@search.yandex.ru",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-48dab3196a1c70a02d199e74e1d24b7b-fde0938f37929c13-01",
"tracestate": "",
"upgrade-insecure-requests": "1",
"user-agent": "Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-48dab3196a1c70a02d199e74e1d24b7b-3af1d676294487da-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 03:14:52.251 UTC | +4051 ms | prefetch | GET | Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 |
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,deflate",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=D6Iyogek",
"from": "support@search.yandex.ru",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"sec-purpose": "prefetch",
"traceparent": "00-d1ca1a540079cc9b57bedc441e3d2710-de017aa8cc82d9dc-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-d1ca1a540079cc9b57bedc441e3d2710-da3fa89fe30ca26e-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-09-21 03:14:56.479 UTC | +8279 ms | Reporting API report (POST) | POST | Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/138.0.0.0 YaBrowser/25.8.0.0 Safari/537.36 |
request headers (15){
"accept-encoding": "gzip, deflate, br, zstd",
"accept-language": "ru,en;q=0.9",
"content-length": "1615",
"content-type": "application/reports+json",
"cookie": "ua-tracer-trace=D6Iyogek",
"host": "uatracer.com",
"origin": "https://uatracer.com",
"priority": "u=4, i",
"traceparent": "00-927b84f9321be930717d0059849c9e40-9982a99c4479d523-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/138.0.0.0 YaBrowser/25.8.0.0 Safari/537.36",
"via": "HTTP/2 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-927b84f9321be930717d0059849c9e40-ade11d11a7658dc0-01",
"x-deno-userspace-tracestate": "",
"x-report-body": "[{\"age\":5183,\"body\":{\"blockedURL\":\"inline\",\"disposition\":\"report\",\"documentURL\":\"https://uatracer.com/\",\"effectiveDirective\":\"style-src-attr\",\"lineNumber\":247,\"originalPolicy\":\"style-src 'self'; report-uri /r/D6Iyogek/LSaDo5wy/csp-report; report-to ua-tracer\",\"referrer\":\"\",\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"statusCode\":200},\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"user_agent\":\"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/138.0.0.0 YaBrowser/25.8.0.0 Safari/537.36\"},{\"age\":5183,\"body\":{\"blockedURL\":\"inline\",\"disposition\":\"report\",\"documentURL\":\"https://uatracer.com/\",\"effectiveDirective\":\"style-src-attr\",\"lineNumber\":243,\"originalPolicy\":\"style-src 'self'; report-uri /r/D6Iyogek/LSaDo5wy/csp-report; report-to ua-tracer\",\"referrer\":\"\",\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"statusCode\":200},\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"user_agent\":\"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/138.0.0.0 YaBrowser/25.8.0.0 Safari/537.36\"},{\"age\":5183,\"body\":{\"blockedURL\":\"inline\",\"disposition\":\"report\",\"documentURL\":\"https://uatracer.com/\",\"effectiveDirective\":\"style-src-attr\",\"lineNumber\":755,\"originalPolicy\":\"style-src 'self'; report-uri /r/D6Iyogek/LSaDo5wy/csp-report; report-to ua-tracer\",\"referrer\":\"\",\"sample\":\"\",\"sourceFile\":\"https://uatracer.com/\",\"statusCode\":200},\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"user_agent\":\"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/138.0.0.0 YaBrowser/25.8.0.0 Safari/537.36\"}]"
}
|
||||
| 2026-09-21 03:14:56.744 UTC | +8544 ms | favicon | GET | Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 |
request headers (11){
"accept": "image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8",
"accept-encoding": "gzip,deflate",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=D6Iyogek",
"from": "support@search.yandex.ru",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-317f0c302861d4fccd6d05bc1f1e5405-c73fc1b7866edf28-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-09-21 03:15:03.792 UTC | +15592 ms | JS | GET | Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 |
request headers (13){
"accept": "*/*",
"accept-encoding": "gzip,deflate",
"connection": "keep-alive",
"cookie": "ua-tracer-trace=D6Iyogek",
"from": "support@search.yandex.ru",
"host": "uatracer.com",
"referer": "https://uatracer.com/",
"traceparent": "00-9e52b997e568995ccf9ef439035359aa-2cc5478ffc4d22b8-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; YandexRenderResourcesBot/1.0; +http://yandex.com/bots) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0",
"via": "HTTP/1.1 ams.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-9e52b997e568995ccf9ef439035359aa-7a46d777eab5fb9e-01",
"x-deno-userspace-tracestate": ""
}
|
||||