TCP SYN (p0f)

4:109+19:0:1452:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-19 02:05 · last seen 2026-09-14 10:27 · JSON

Last 7 days (9 observations)

Distinct clients per day (last 30 days, peak 5/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 TTL109+19
Options length0
MSS1452
Window size65535
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
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
t13d2913h1_723694b0fccc_5671b5df502915
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.9
t13d1517h2_8daaf6152771_cb7bf5808d99 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.9
t13d1515h1_8daaf6152771_de4a06bb82e33
t13d201200_2b729b4bf6f3_e24568c0d4402
t13d1515h1_8daaf6152771_0a20fe35d3a52

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr11frbe_835281d8e5d9_000000000000_0000000000006
ge20nr13vivn_0c2c1d640f3e_000000000000_0000000000004
ge11nn13enus_9db22d02e17a_000000000000_0000000000003
ge20nr12vivn_54b4638ab28b_000000000000_0000000000003
ge11nr11nlbe_835281d8e5d9_000000000000_0000000000002
ge11nn14enus_4a2973d235de_000000000000_0000000000002
ge11nr11dede_835281d8e5d9_000000000000_0000000000002
ge11nn11dede_835281d8e5d9_000000000000_0000000000002
ge11nr11frbe_b350a6a7c155_000000000000_0000000000002
ge20nr16dede_94fdc06e0694_000000000000_0000000000002

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, +43 more.The fingerprint page shows the full measured match list. More on the catalog.10
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
1:65536;2:0;4:6291456;6:262144|15663105|3:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 151.0.7922.34, chromium 147.0.7727.15, chromium 145.0.7632.6, +21 more.The fingerprint page shows the full measured match list. More on the catalog.1
1:65536;2:0;4:6291456;6:262144|15663105|5:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chromium 133.0.6943.16, chrome 150.0.7871.128, chromium 148.0.7778.96, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1
1:65536;2:0;4:6291456;6:262144|15663105|9:1:0:256|m,a,s,p1
1:65536;2:0;4:6291456;6:262144|15663105|11:1:0:256|m,a,s,p1
1:65536;2:0;4:6291456;6:262144|15663105|13:1:0:256|m,a,s,p1
1:65536;2:0;4:6291456;6:262144|15663105|15:1:0:256|m,a,s,p1
1:65536;2:0;4:6291456;6:262144|15663105|17:1:0:256|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1452_840

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.369
Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Mobile/15E148 Safari/604.14
Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.362
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.362
Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/153.0 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Linux; Android 14; Pixel 8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362
Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Linux; Android 13; SM-S911B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362
Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/150.0.0.0 Mobile/15E148 Safari/604.12

Country

fingerprintco-occurrences
BE · Belgium14
VN · Vietnam10
DE · Germany7
AE · United Arab Emirates4
BR · Brazil1
TH · Thailand1
PT · Portugal1
BO · Bolivia1
SY · Syria1

Network (ASN)

fingerprintco-occurrences
AS5432 · Proximus NV14
AS7552 · Viettel Group9
AS5384 · Emirates Internet4
AS39835 · goetel GmbH4
AS6805 · Telefonica Germany GmbH & Co.OHG2
AS133481 · AIS Fibre1
AS45899 · VNPT Corp1
AS6568 · EMPRESA NACIONAL DE TELECOMUNICACIONES SOCIEDAD ANONIMA1
AS216472 · High Speed For Internet Services L.L.C1
AS264397 · SUPRANET TELECOM INFORMATICA LTDA1