User-Agent

Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/148.0.0.0 Safari/537.36

first seen 2026-06-21 17:04 · last seen 2026-06-21 17:04 · JSON

Decomposed attributes

Browser / clientHeadless Chrome 148.0.0.0
Operating systemLinux x86_64
Device classbot
Noteinferred 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)

fingerprintco-occurrences
q13d0312h3_55b375c5d22e_178839b6cec1 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 152.0.7977.83, chrome 152.0.7977.64, chrome 152.0.7977.65, +5 more.The fingerprint page shows the full measured match list. More on the catalog.2
t13d1517h2_8daaf6152771_dcad5a0539911

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr13enus_82d96efe40c3_000000000000_0000000000001
ge30nr13enus_82d96efe40c3_000000000000_0000000000001
ge30nn14enus_22d226078255_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p 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, +59 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:41+23:0:1412:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:01

QUIC transport params

fingerprintco-occurrences
q13_313ab9afcaf5 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, edge 149.0.4022.52, +6 more.The fingerprint page shows the full measured match list. More on the catalog.2

Country

fingerprintco-occurrences
KE · Kenya3

Network (ASN)

fingerprintco-occurrences
AS328986 · Vayacom Limited3

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).

fingerprintlinked observations
q13d0312h3_55b375c5d22e_178839b6cec11
t13d1517h2_8daaf6152771_dcad5a0539911