ua-tracer by Paul Kinlan

trace 0E8vPiA6

ua-tracer

what does a user agent actually fetch, follow & run?

← all traces

Trace 0E8vPiA6

First seen: 2026-08-29 21:19:41.228 UTC
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
Bot verification: ✓ verified Bingbot IP checked against published bot CIDR ranges; IP in Bingbot 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.

ReceivedΔKindMethodUser-Agent
2026-08-29 21:19:41.228 UTC +0 ms homepage GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (8) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "traceparent": "00-7d0aedb802599cd0da5a9823705ad33c-5bd498ff789b2348-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-08-29 21:19:56.314 UTC +15086 ms CSS GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (12) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-fb7ca9a3503215e22a22b2fe633c7cbc-c37f3864d7193c81-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-fb7ca9a3503215e22a22b2fe633c7cbc-ed0250bda0d8dda0-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-29 21:19:56.812 UTC +15584 ms iframe document GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
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",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-d6010e736707209232f2061ead5a1d64-f0a9368363d7fdfb-01",
  "tracestate": "",
  "upgrade-insecure-requests": "1",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-d6010e736707209232f2061ead5a1d64-9c539a272031b75e-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-29 21:20:00.459 UTC +19231 ms ES module GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-8afb5a5aa4ca704525032734a39fa236-ee95a55cef00d4b7-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-8afb5a5aa4ca704525032734a39fa236-b1e04866ffcfb083-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-29 21:20:00.567 UTC +19339 ms font (HTML) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-d3fb3ce48f81506eacc5fa083e624abe-d7a8e73fb53ca6c7-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-d3fb3ce48f81506eacc5fa083e624abe-a117e62e12b65275-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-29 21:20:01.267 UTC +20039 ms JS GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (12) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-856a93d50e930837268227fa3ce0f265-2bd05057f3dce900-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-856a93d50e930837268227fa3ce0f265-8b676477daf7ee5f-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-29 21:35:52.156 UTC +970928 ms CSS @import (nested stylesheet) GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (10) 
{
  "accept": "text/css,*/*;q=0.1",
  "accept-encoding": "gzip, deflate, br",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "referer": "https://uatracer.com/r/0E8vPiA6/WGsc6k86/style.css",
  "traceparent": "00-a4be04bf3eb8ddde050c108c6baae57c-5d2aaddf69a71362-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-08-29 21:35:53.327 UTC +972099 ms CSS @font-face GET Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/r/0E8vPiA6/WGsc6k86/style.css",
  "traceparent": "00-1ef0060ab2d48f150f0d5d1f7f95958e-921861642a12ae26-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-1ef0060ab2d48f150f0d5d1f7f95958e-483343c14728375a-01",
  "x-deno-userspace-tracestate": ""
}
2026-08-29 21:35:53.356 UTC +972128 ms CSP violation report (POST) POST Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (16) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "content-length": "422",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-0e34c4aef15c0fc5e5c54309d59198fc-e26fc01022348d78-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-0e34c4aef15c0fc5e5c54309d59198fc-7a4b559b1985094e-01",
  "x-deno-userspace-tracestate": "",
  "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/0E8vPiA6/WGsc6k86/main.js\",\"ua\":\"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36\"}"
}
2026-08-29 21:35:53.821 UTC +972593 ms Reporting API report (POST) POST Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (16) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "content-length": "2215",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-9759390b4f62b2c01f2219512b8848aa-4a536552feb3731b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
  "x-deno-userspace-traceparent": "00-9759390b4f62b2c01f2219512b8848aa-1f3737a1243b3dc7-01",
  "x-deno-userspace-tracestate": "",
  "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/0E8vPiA6/WGsc6k86/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/0E8vPiA6/WGsc6k86/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/0E8vPiA6/WGsc6k86/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/0E8vPiA6/WGsc6k86/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/r/0E8vPiA6/WGsc6k86/main.js\",\"lineNumber\":45,\"columnNumber\":11,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/0E8vPiA6/WGsc6k86/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}}],\"ua\":\"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36\"}"
}
2026-08-29 21:35:54.606 UTC +973378 ms client timing POST POST Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36
request headers (13) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "content-length": "2621",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=0E8vPiA6",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-7daa5f31897fdb21cf052a3ffa8e14d8-96292b71d617465e-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/136.0.0.0 Safari/537.36 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.36",
  "via": "HTTP/2 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.

ResourceInitiatorStartDurationTimeline
style.css link 21ms 28ms
font.woff2 link 21ms 27ms
preload.png link 21ms 8ms
photo.png img 21ms 10ms
main.js script 21ms 43ms
module.js script 22ms 27ms
prefetch.png link 26ms 22ms
iframe iframe 30ms 75ms
import.css css 52ms 1160ms
js-ran.gif?t=1788039352770 img 1214ms 1ms
css-bg.png css 1215ms 5ms
css-font.woff2 css 1215ms 1126ms
csp-report beacon 1252ms 1285ms
report beacon 1254ms 1510ms
module-ran.gif?t=1788039352816 img 1259ms 1ms