ua-tracer
by Paul Kinlan
trace 34RBNKEu
what does a user agent actually fetch, follow & run?
Trace 34RBNKEu
First seen: 2026-11-01 15:43:54.087 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 |
|---|---|---|---|---|
| 2026-11-01 15:43:54.087 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=:4wuNSAs78ZKQOO1vCQPBv57NUEOSutoWGIeOW4OcgQWsaHwIaZrYSo9mJMBRBhWg0a9ITMsIhl7fK7dZzfi+BA==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793547833;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793547893;nonce=\"gaH5k_pSwfD78m_G60mtM7_LKgglpJPloHQzi5kPQxnxZJLbWLd9JPAKW6js60KkP1KwR1ZwPhgWDTuKrcCcdg\";tag=\"web-bot-auth\"",
"traceparent": "00-e6e7dc3919eb1398352c23d582768797-81245f64215c9794-01",
"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-e6e7dc3919eb1398352c23d582768797-3c4128ee9865363e-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-11-01 15:47:03.934 UTC | +189847 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=:2bMRtF/WdmTEFrRUZ+PFkPKUaJ2Rw/Kp6ZR7tvqI6jvGwvEov0HAfm6T3HXcFcyH3QIoz/vBYGhfVTnmsbkkDg==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793548023;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793548083;nonce=\"LlrBtsrbu8RFktINRNGGw8f-K2-RYD27w3hPpwG3yNJmGx3OY7cyuYPJaAIMK7P6umenmafegc7P_9jEd-t6_Q\";tag=\"web-bot-auth\"",
"traceparent": "00-83bf1e896635156e67fb72db78db03c7-06e242ba03dddfa6-01",
"tracestate": "",
"user-agent": "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)",
"via": "HTTP/2 ord.vultr.prod.deno-cluster.net"
}
|
||||
| 2026-11-01 15:47:05.131 UTC | +191044 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=:OiFuL2wm+AN6dAtWCXIpGmuPYTk0PLZ3elsLZvVHKxpPBb9jO9JSiO+xl1IEyTFAJnteu/9GDPayxOqavX8EBQ==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793548025;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793548085;nonce=\"3KIEMsDDVQHUZzvy5_cnPxejJJNS5kmmtfMd22WdTkC6XPbllRRUkIq4I-Zem7Qrg3yFcllu0vcdiG8wFLa4rw\";tag=\"web-bot-auth\"",
"traceparent": "00-08eaf35220ba4ff0cd85b1d9d18a06b3-eadac92ac6984874-01",
"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": "00-08eaf35220ba4ff0cd85b1d9d18a06b3-31cb802dfa4a43cd-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-11-01 15:47:06.199 UTC | +192112 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=:aUcp8+4WYsulr8p0hqmLRsKBkORELcoQKsi6doeBNloHX8EAd6VIl6NexfqCtBlGBUisxrIqfRmee8sVMRs6Cw==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793548026;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793548086;nonce=\"BBwL4oFCeQmPiMsilLJxIpw7hNlorBmQ_DzB1ScEOHEN51qIM23cDbEc5tMHp5J6bZJ4OAdhImFOJ8Hr5OKgsg\";tag=\"web-bot-auth\"",
"traceparent": "00-6b9f839ae5c160d739cce9def50907c8-2efa2e0c0a86aafc-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": "00-6b9f839ae5c160d739cce9def50907c8-be387d366545f06d-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-11-01 15:47:07.269 UTC | +193182 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=:uzjdyxCHVs5+Kqmpiv16VwrhGc4v06AWCKrnWOZhzITCrzwoKpwf55R9v7WssCfSBUpd6T6ZjrDdXqLAIDJQCQ==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793548027;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793548087;nonce=\"HKcgjySUwYWDcuX3KWnCy8bwv0rASUOyAPb4lDRB0x8sdEFQr4PP0kMefTQ25bxWcZMdrv_s5nkFgoh-JD_Z-w\";tag=\"web-bot-auth\"",
"traceparent": "00-9afdea8d239c4c41571c46a818471988-5e8381f954f87c70-01",
"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": "00-9afdea8d239c4c41571c46a818471988-de095edda7c179bb-01",
"x-deno-userspace-tracestate": ""
}
|
||||
| 2026-11-01 15:47:08.393 UTC | +194306 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=:gu7KJenov4C6r49+j7l4BSm6VsoLTZx0bFkXi2HBauOLBy42FhHN4R7b+sM8a/bKizku2Eow3nkUNpFehF0bAg==:",
"signature-agent": "\"https://ahrefs.com\"",
"signature-input": "sig=(\"@authority\" \"signature-agent\");created=1793548028;keyid=\"e3vpiy0B6M1Wdxnizw3dqRSgpqS6SXM2qiQ6HtUwZ5g\";alg=\"ed25519\";expires=1793548088;nonce=\"FvlGhqsN3FAkvIh80aOlR4fbPtvIbMT3VtJ3cBfFIrAem1j6qo1_a6TevWXjHZzQPyY9u2lwe0t4CqWwlGpTEA\";tag=\"web-bot-auth\"",
"traceparent": "00-e23e17fdbbc99775221bf2193ce5d0c7-22626114d9e0c3a3-01",
"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-e23e17fdbbc99775221bf2193ce5d0c7-135e2cbb7712e77b-01",
"x-deno-userspace-tracestate": ""
}
|
||||