TCP SYN (p0f)

4:114+14:0:1460:65535,8:mss,nop,ws,sok,ts:df,id+:0

first seen 2026-09-01 00:03 · last seen 2026-10-30 12:40 · JSON

Last 7 days (3 observations)

Distinct clients per day (last 30 days, peak 2/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

IP version4
Initial TTL114+14
Options length0
MSS1460
Window size65535
Window scale8
Options layoutmss,nop,ws,sok,ts
Quirksdf,id+
Payload class0

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
t13d1516h2_8daaf6152771_806a8c22fdea Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, chromium 151.0.7922.34, +28 more.The fingerprint page shows the full measured match list. More on the catalog.108
t13d1517h2_8daaf6152771_cb7bf5808d99 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 152.0.7977.83, chrome 156.0.8078.48, chrome 154.0.8037.57, +27 more.The fingerprint page shows the full measured match list. More on the catalog.44
t13d0916h2_f91f431d341e_806a8c22fdea3
t13d1517h2_8daaf6152771_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 155.0.1, firefox 154.0, firefox 156.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d1515h1_8daaf6152771_0a20fe35d3a51
t13d1513h2_8daaf6152771_2abe4cb145371

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn15ru00_74941313fa48_000000000000_00000000000053
ge20nn16ru00_aedc7d5591f1_000000000000_00000000000043
ge20nn14ruru_3fb598f484fb_000000000000_00000000000017
ge20nn16ruru_aedc7d5591f1_000000000000_00000000000016
ge20nn15ruru_74941313fa48_000000000000_00000000000010
ge20nn14ru00_3fb598f484fb_000000000000_00000000000010
ge20nr26enus_b489d368779c_000000000000_0000000000002
ge11nn14enus_4a2973d235de_000000000000_0000000000001
ge20nn11ruru_3901d4197baf_000000000000_0000000000001
ge20nn14ruru_e7796bbdab6f_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +60 more.The fingerprint page shows the full measured match list. More on the catalog.20
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:256|m,a,s,p3
1:65536;2:0;4:6291456;6:262144|15663105|11:1:0:256|m,a,s,p3
1:65536;2:0;4:6291456;6:262144|15663105|13:1:0:256|m,a,s,p3
1:65536;2:0;4:6291456;6:262144|15663105|15:1:0:256|m,a,s,p3
1:65536;2:0;4:6291456;6:262144|15663105|19:1:0:256|m,a,s,p3
1:65536;2:0;4:6291456;6:262144|15663105|21:1:0:256|m,a,s,p3
1:65536;2:0;4:6291456;6:262144|15663105|35:1:0:256|m,a,s,p3
1:65536;2:0;4:6291456;6:262144|15663105|71:1:0:256|m,a,s,p3
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 152.0.7977.83, +85 more.The fingerprint page shows the full measured match list. More on the catalog.2

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-4-8_1460_8158

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.0.0 Safari/537.36 Edg/153.0.0.0103
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/155.0.0.0 Safari/537.3640
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/156.0.0.0 Safari/537.363
Mozilla/5.0 (Linux; Android 15; Pixel 9 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Mobile Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36 OPR/135.0.0.02
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/155.0.0.0 Safari/537.36 Edg/155.0.0.02
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.361
ktor-client1
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:157.0) Gecko/20100101 Firefox/157.01

Country

fingerprintco-occurrences
RU · Russia158

Network (ASN)

fingerprintco-occurrences
AS35807 · SkyNet Ltd.153
AS51645 · JSC ER-Telecom Holding3
AS56420 · JSC ER-Telecom Holding1
AS41668 · JSC ER-Telecom Holding1

TLS supported groups

fingerprintco-occurrences
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 156.0.8078.48, edge 155.0.4283.62, chrome 156.0.8078.47, +11 more.The fingerprint page shows the full measured match list. More on the catalog.10

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
q13d0311h3_55b375c5d22e_653d80c3fe9d2