ua-tracer by Paul Kinlan

trace 56Rp1XUa

ua-tracer

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

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Trace 56Rp1XUa

First seen: 2026-09-22 19:31:21.837 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
2026-09-22 19:31:21.837 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": "00-6560209da4aef5a6726247903e363e9b-e54e014543482b1f-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"
}
2026-09-22 19:31:31.625 UTC +9788 ms prefetch 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 (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "traceparent": "00-c32234dde8244581995fe29ff63c3d0d-baf67a1358b74019-01",
  "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",
  "x-deno-userspace-traceparent": "00-c32234dde8244581995fe29ff63c3d0d-149d035dd88060f5-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-22 19:31:37.075 UTC +15238 ms ES module 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 (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "traceparent": "00-e1f7371a8f75e45692fe43c2c2712817-9f389e2c1c61f9ff-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",
  "x-deno-userspace-traceparent": "00-e1f7371a8f75e45692fe43c2c2712817-0268212b253a05e3-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-22 19:31:37.400 UTC +15563 ms JS 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 (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "traceparent": "00-f33851cbf1962d3a6a5d981028db0296-ed947d257f7ed9d5-01",
  "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",
  "x-deno-userspace-traceparent": "00-f33851cbf1962d3a6a5d981028db0296-7f704d0afec5833a-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-22 19:31:39.290 UTC +17453 ms iframe document 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 (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "traceparent": "00-ff07ce9de4d82ba749ef9fdb7343a84f-11905d79a1e0b7f8-01",
  "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",
  "x-deno-userspace-traceparent": "00-ff07ce9de4d82ba749ef9fdb7343a84f-25418f82c700cd57-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-22 19:31:47.968 UTC +26131 ms font (HTML) 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 (10) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "traceparent": "00-664b47d4141390f3e752cda820db30b3-612084a33a37a1f2-01",
  "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",
  "x-deno-userspace-traceparent": "00-664b47d4141390f3e752cda820db30b3-faf75c1c311ecddd-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-22 19:47:33.439 UTC +971602 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 (14) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "content-length": "422",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=56Rp1XUa",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-c3b9ce229808b4f1d510d3b706cf93c4-2b08281f97b5e37c-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-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/56Rp1XUa/ZhQRrG8S/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\"}"
}
2026-09-22 19:47:33.498 UTC +971661 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=56Rp1XUa",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-8dd943419497d337339d1964bccc2c9f-6ee9282b48a307e4-01",
  "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": "00-8dd943419497d337339d1964bccc2c9f-b97a56b51ba512fd-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/56Rp1XUa/ZhQRrG8S/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/56Rp1XUa/ZhQRrG8S/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/56Rp1XUa/ZhQRrG8S/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/56Rp1XUa/ZhQRrG8S/csp-report; report-to ua-tracer\",\"sample\":\"\",\"disposition\":\"report\",\"statusCode\":200}},{\"type\":\"csp-violation\",\"url\":\"https://uatracer.com/\",\"body\":{\"sourceFile\":\"https://uatracer.com/r/56Rp1XUa/ZhQRrG8S/main.js\",\"lineNumber\":45,\"columnNumber\":11,\"documentURL\":\"https://uatracer.com/\",\"referrer\":\"\",\"blockedURL\":\"inline\",\"effectiveDirective\":\"style-src-attr\",\"originalPolicy\":\"style-src 'self'; report-uri /r/56Rp1XUa/ZhQRrG8S/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\"}"
}
2026-09-22 19:47:35.354 UTC +973517 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 (15) 
{
  "accept": "*/*",
  "accept-encoding": "gzip, deflate, br",
  "content-length": "1810",
  "content-type": "application/json",
  "cookie": "ua-tracer-trace=56Rp1XUa",
  "from": "bingbot(at)microsoft.com",
  "host": "uatracer.com",
  "origin": "https://uatracer.com",
  "referer": "https://uatracer.com/",
  "traceparent": "00-eca452847b3d88aba708da2aa9fb0f7e-7f020d944b2daf9c-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-eca452847b3d88aba708da2aa9fb0f7e-673d456ab1105fdb-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-24 11:29:05.032 UTC +143863195 ms JS executed beacon 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": "00-2ce8daa48955c41d5a064082eff027d2-59ff8e855ba512ad-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"
}
2026-09-24 12:07:44.917 UTC +146183080 ms image 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": "00-06496512bad2c8228eec72929bf2a88b-ee874438b1979beb-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": "00-06496512bad2c8228eec72929bf2a88b-b441c2946639265a-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-24 13:26:09.442 UTC +150887605 ms preload (image) 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": "00-088766b996150c6e40cdc63a2965640c-edf697ecb1b7bf3f-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": "00-088766b996150c6e40cdc63a2965640c-1b26331ef076124e-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-24 14:01:10.015 UTC +152988178 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": "00-7726b9324c9da087f37e90a816dcef1c-6cdb289fc4cd4153-01",
  "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": "00-7726b9324c9da087f37e90a816dcef1c-1867ea05dfd94b6e-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-24 14:01:11.951 UTC +152990114 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 (9) 
{
  "accept-encoding": "gzip,deflate",
  "connection": "close",
  "host": "uatracer.com",
  "traceparent": "00-264f7314e6b5b9f2814e804285a52afa-c09d46e8d06e9677-01",
  "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": "00-264f7314e6b5b9f2814e804285a52afa-85127184ec99edcb-01",
  "x-deno-userspace-tracestate": ""
}
2026-09-24 19:41:31.127 UTC +173409290 ms prefetch 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": "00-5524af82a72fb2d18ea33dd3bdf55018-ee7463669e9ca2a1-01",
  "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": "00-5524af82a72fb2d18ea33dd3bdf55018-f021292326183e6c-01",
  "x-deno-userspace-tracestate": ""
}

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 234ms 303ms
font.woff2 link 235ms 341ms
preload.png link 235ms 248ms
photo.png img 235ms 267ms
module.js script 235ms 306ms
main.js script 235ms 306ms
prefetch.png link 241ms 381ms
iframe iframe 246ms 344ms
js-ran.gif?t=1790106452611 img 549ms 27ms
module-ran.gif?t=1790106452617 img 554ms 22ms