User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/129.0.0.0 Safari/537.36
first seen 2026-06-11 23:07 · last seen 2026-06-29 23:13 · JSON
Decomposed attributes
| Browser / client | Headless Chrome 129.0.0.0 |
|---|
| Operating system | Linux x86_64 |
|---|
| Device class | bot |
|---|
| Note | inferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above |
|---|
Co-observed signals
Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.
TLS ClientHello (JA4)
| fingerprint | co-occurrences |
|---|
q13d0311h3_55b375c5d22e_653d80c3fe9d Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 149.0.7827.102, +52 more.The fingerprint page shows the full measured match list. More on the catalog. | 6 |
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog. | 3 |
HTTP request (JA4H)
HTTP/2 frames (Akamai)
TCP SYN (p0f)
| fingerprint | co-occurrences |
|---|
4:54+10:0:1460:62727,8:mss,sok,ts,nop,ws:df,id+:0 | 2 |
4:58+6:0:1460:62727,8:mss,sok,ts,nop,ws:df,id+:0 | 1 |
TCP SYN (JA4T)
QUIC transport params
| fingerprint | co-occurrences |
|---|
q13_382365a2166d Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33.The fingerprint page shows the full measured match list. More on the catalog. | 4 |
q12_4b72b12b46e7 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 133.0.6943.16, chromium 131.0.6778.33.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
Country
| fingerprint | co-occurrences |
|---|
US · United States | 9 |
Network (ASN)
| fingerprint | co-occurrences |
|---|
AS16509 · Amazon.com, Inc. | 9 |
Cross-transport links
TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).