ua-tracer by Paul Kinlan

trace HDkI1RwA

ua-tracer

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

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Trace HDkI1RwA

First seen: 2026-10-29 15:35:52.561 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.

ReceivedΔKindMethodUser-Agent
2026-10-29 15:35:52.561 UTC +0 ms homepage 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=:UGLMexmho4nnXtf84SBLmELofeZCFxk6NzSdkMSJS+yYL5Oh7Phra5WHfx3h4CSPo2IOdDPOOLU83Rqfwmy5AA==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793288152;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793288212;nonce=\"mIu80YQ3rpLQEQJBYjhiPqKI2kZrzo-vhEKitE8vERFrqHko2O8G_TLR9VTnB1ygzjpcm-7ObABfc5x8mSzXNA\";tag=\"web-bot-auth\"",
  "traceparent": "00-4f779af8761cf65fff8e4eda2dad00ee-9be70692f025f40b-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-29 15:35:59.076 UTC +6515 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=:wOnttmvCYKVGP0ysKMNgRyiHI5qZgFZGE3l6hdzXCDUC7P6kPOVJA00V7LuHK+TVUDqb4hv2LM1XwDhLE/GrBg==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793288159;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793288219;nonce=\"t22BPahDC8fzv-sYy5jvNqNzpcxUHEMvYrA4mV70bwW53q0DNwXBaxP52vrG5K57BzJzQl9Jvwg8Gzr_qdkMIw\";tag=\"web-bot-auth\"",
  "traceparent": "00-dc2b600adb55520cf764795182cda682-0df8e1b784191667-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-29 15:36:00.012 UTC +7451 ms ES module 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=:n23c5/pCadpIFbpgqn2N7BYYVp4kJWDZyA36MlidJ/9QqWylo9B8LK8LsxBZVaYF4dNBz2aha6yO1v/tKWnWAg==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793288159;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793288219;nonce=\"Z1mYWBA87IsjFzkNVEbI9WwPu2qeVNXdTzMOGO4EWQMN3F56MDPYZBU2OMf_brU_kLFDP4K-N6Qt3mvq3y-0tQ\";tag=\"web-bot-auth\"",
  "traceparent": "00-b89c538c1ce6672953aa5d0a7cabbe5f-344bae1c7f29fc4f-01",
  "tracestate": "",
  "user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
  "via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
2026-10-29 15:36:00.977 UTC +8416 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=:ss0sya/4Dr83HIDt+WNKDYUNGwIFRyuUS3XhTcsk6Hg7CyZ6ZZVDqLIvsLQukDDFrlbpr0EzWGwYrAXug7oyAA==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793288160;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793288220;nonce=\"aR29K0Q_PP351wHVQcnkevu1Q7D_YT6YRk-ySI1IN3J17G0sJfV8hRSlEYn1-TzOs2L5o2oGAOBMUUr1F-qp9w\";tag=\"web-bot-auth\"",
  "traceparent": "00-81bf4a85ded82b5ef7fa579333368b30-e3c34e8b59abd36b-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": "00-81bf4a85ded82b5ef7fa579333368b30-126f6fbf762b54af-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-29 15:36:02.123 UTC +9562 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=:iga0uX26DD534BoNMfJg4l8pmKR964ssJfoxfrYGRBOnoCWjsG+nff/fdtHXOLj9h+PyXhyejCyU0S2ZufIWBg==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793288162;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793288222;nonce=\"IWeHjrAoM7-IuWWEqDJpAniI0jK2ZZLVuRRRp8K0hsTDCOZwkN15EaGrO1Zer5YSdxPkUMVUU_1y0ejKNBMbcw\";tag=\"web-bot-auth\"",
  "traceparent": "00-8b91dd6a157c3fb076760448b263def5-346ca032005c9110-01",
  "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": "00-8b91dd6a157c3fb076760448b263def5-cd450cfd67a54df4-01",
  "x-deno-userspace-tracestate": ""
}
2026-10-29 15:36:03.271 UTC +10710 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=:m0lrNrrOd5j+qCHxJ4pHa2Po0+O2MAjUzkWHeG8Epb3vwbAECzSjDhjhSgZbSUahg2WroKI8qX6JLYmCJwJaCw==:",
  "signature-agent": "\"https://ahrefs.com\"",
  "signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793288163;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793288223;nonce=\"aorHsoEBA_D84cBPCdWPV_jOfRmA0sUG73v3jcfiOuvucjTPwuky08qGPRy_pn7ctIwKqKVupc3ydbB_7xal0Q\";tag=\"web-bot-auth\"",
  "traceparent": "00-f35d61568624d5f69a5f77f7ab7546d9-c2197ef83390cbc6-01",
  "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-f35d61568624d5f69a5f77f7ab7546d9-2aa4f483974fe9d8-01",
  "x-deno-userspace-tracestate": ""
}