TCP SYN (JA4T)

65535_2-4-8-1-3_1350_6

first seen 2026-07-16 21:44 · last seen 2026-09-11 17:43 · JSON

Last 7 days (3 observations)

Distinct clients per day (last 30 days, peak 8/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

TCP window65535
Option kinds2-4-8-1-3
MSS1350
Window scale6

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
t13d4412h1_fd39b124ee10_58ed7828516f21
t13d1515h1_8daaf6152771_de4a06bb82e317
t13d1515h1_8daaf6152771_0a20fe35d3a514
t13d1516h1_8daaf6152771_1a63afa7c4781

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_00000000000025
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.21
ge11nn14enus_4a2973d235de_000000000000_0000000000007

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:09
4:45+19:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:07
4:46+18:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:07
4:43+21:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:05
4:52+12:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:04
4:42+22:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:55+9:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:38+26:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:40+24:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:02
4:44+20:0:1350:65535,6:mss,sok,ts,nop,ws:df,id+:02

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.362

Country

fingerprintco-occurrences
ZA · South Africa16
AR · Argentina11
BD · Bangladesh5
VN · Vietnam5
IN · India4
US · United States2
UA · Ukraine2
PH · Philippines2
CM · Cameroon2
BR · Brazil1

Network (ASN)

fingerprintco-occurrences
AS29975 · Vodacom15
AS45899 · VNPT Corp5
AS138754 · Kerala Vision Broad Band Private Limited4
AS23688 · Link3 Technologies Ltd.3
AS263715 · EMPRESA DE SERVICIOS Y APLICACIONES TECNOLOGICAS SRL3
AS153038 · Business Zone Limited2
AS49561 · LLC VECHIR TELECOM2
AS132199 · Globe Telecom Inc.2
AS30992 · MTN Network Solutions (Cameroon)2
AS7029 · Windstream Communications LLC1