ua-tracer
by Paul Kinlan
trace RJTq2Ijt
what does a user agent actually fetch, follow & run?
Trace RJTq2Ijt
First seen: 2026-08-26 14:04:40.985 UTC
User-Agent: Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)
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 |
|---|---|---|---|---|
| 2026-08-26 14:04:40.985 UTC | +0 ms | homepage | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:m3YC6d5TepyEWk+zaoKLZKbRrgxkA/98g4uMhXIDUvm6UKy8J9+lbNbZRBy6T/80L80M2IPvy3WuBpI/wwrZAw==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1787753080;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1787753140;nonce=\"_gGhiu8nBHkiNm87d6Ee6M5C3kA-kJh3lyR4zd4wvlwwv-0tuoyff43YcL9VnzouQUIpkOXtF-I6pMFAveOozg\";tag=\"web-bot-auth\"",
"traceparent": "00-708631b48bf323858509cf7862f37975-4aa706f38cd58916-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-708631b48bf323858509cf7862f37975-290cc9cf2c73cbf9-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-08-26 14:08:48.832 UTC | +247847 ms | JS | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (10){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:DWbUMMsYeBCaMGjHHOXF5NkBFQeYXRfhfc6oGvtaGobKkaqH7zUIV316wSp8EMDBQqS+wteQ0HFQkiBDMfl0Dg==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1787753328;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1787753388;nonce=\"iHELTBilbCOZEczhxmAppVhX44t74brBWXm-1yWSnwgOoo52Xf8I8kvCHTf4lqwNOi9mAAZGds1zm_iNcGotPQ\";tag=\"web-bot-auth\"",
"traceparent": "00-45ec71b8390762fea4eed6116200ba86-a02ea20f6977b11d-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-08-26 14:08:50.142 UTC | +249157 ms | CSS | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:n6K5dQ4cQPvnOR2L5/6PtQgbPfx2+z9dboGWGg3bgYWyuxlJItPZxt9gkwu5UCdUrTurv29CrgPwQoxsIH0DBg==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1787753330;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1787753390;nonce=\"-GjP81jihKuvL-9pZwPIAbQ1XA8Ywm7qaFsLsN6c60-QImsns2gNcCwL1dCMw1Nteeort5AJpR8LdSMr-LIJrw\";tag=\"web-bot-auth\"",
"traceparent": "00-9da71b777524e0d8022747079b4ee75c-fcab6f8eadc99120-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-9da71b777524e0d8022747079b4ee75c-dcdf27ee8bd6534a-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-08-26 14:08:51.507 UTC | +250522 ms | image | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:+WA7YJ9H3uVvaE7QuEPi7bnK/AtImHRRY9xwu+OkWTc7b4X4qdyBD/1TVU6+Jr4lC0gyX6X3Ap+NgCVWi9yCAA==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1787753331;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1787753391;nonce=\"9dAONDrdPmMqLQM_YHLegs3wQayyOWEa8QEvvPbnLLwdIetauA93-Xnx4BrBSg0G6L9CqKIgE5KF4uliOq3dtw\";tag=\"web-bot-auth\"",
"traceparent": "00-e5a1e210c308df1cf441225e77345341-8db17a5a92d8f636-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-e5a1e210c308df1cf441225e77345341-fdc520f49a4a9063-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-08-26 14:08:52.673 UTC | +251688 ms | Open Graph image | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:ma/Lu3EWgKaCfbXtd+NGZxiN0SHn+I5oQ4pP4IULRuDyJLOK7gkkZfodlwE5jgWTH/hUzWRyCNXMHlIxXrKjBQ==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1787753332;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1787753392;nonce=\"N_eDSScbGRJVaWFjiATXbjwF-810WmC9-dhvZhKtoofgUzvwWEdN2h8rMkKV76c_YHimDwmlatC1fJPvHlpCmA\";tag=\"web-bot-auth\"",
"traceparent": "00-0c7b9f650f9d2d8dc65b7e0fb925e6fe-d1383f937eb06f8e-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-0c7b9f650f9d2d8dc65b7e0fb925e6fe-1b411f0385de31b6-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-08-26 14:08:53.857 UTC | +252872 ms | ES module | GET | Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) |
request headers (12){
"accept": "*/*",
"accept-encoding": "deflate, gzip, br, zstd",
"host": "uatracer.com",
"signature": "sig=:HbrC/GZj7HBaDZs72xJelRa5PRrUKtuVcwaVU4M4nLR2BZV380aTbWCz2njLkp9KQjBMC5JeiPWyYdWg26NMAA==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1787753333;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1787753393;nonce=\"e525DyW4fYR8ulZQ4oiM4cU5zPntIxoWVGIQu4qgPFce45xc5aA3BTyF0lyDtDF6e5DQPsMKTeiXLnSDuLaVkg\";tag=\"web-bot-auth\"",
"traceparent": "00-e7bf35dddae02cc7ae8570f2c410da76-d44622fc68a5b8b6-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net",
"x-deno-userspace-traceparent": "00-e7bf35dddae02cc7ae8570f2c410da76-5a9ec6aad78a2ab8-01",
"x-deno-userspace-tracestate": ""
}
|
||||