TCP SYN (JA4T)

65535_2-4-8-1-3_1420_8

first seen 2026-07-02 21:14 · last seen 2026-09-15 04:58 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 17/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
MSS1420
Window scale8

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_58ed7828516f76
t13d1515h1_8daaf6152771_0a20fe35d3a542
t13d1515h1_8daaf6152771_de4a06bb82e330
t13d1516h1_8daaf6152771_1a63afa7c4785
t13d1513h2_8daaf6152771_eca864cca44a1

HTTP request (JA4H)

fingerprintco-occurrences
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.76
ge11nn13enus_9db22d02e17a_000000000000_00000000000050
ge11nn14enus_4a2973d235de_000000000000_00000000000027
ge20nn030000_80b089f68b8e_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
4:16777216|16711681|0|m,p,a,s1

TCP SYN (p0f)

fingerprintco-occurrences
4:45+19:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:031
4:47+17:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:016
4:46+18:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:015
4:48+16:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:012
4:44+20:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:012
4:42+22:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:09
4:43+21:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:09
4:51+13:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:08
4:50+14:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:07
4:41+23:0:1420:65535,8:mss,sok,ts,nop,ws:df,id+:07

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.3610
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.369
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.368
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.368
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.368
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.367
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.366
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.365
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.364
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

Country

fingerprintco-occurrences
PK · Pakistan26
SN · Senegal23
BR · Brazil21
VN · Vietnam15
KZ · Kazakhstan7
MX · Mexico6
BD · Bangladesh6
KE · Kenya6
PE · Peru4
AU · Australia3

Network (ASN)

fingerprintco-occurrences
AS8346 · SONATEL-AS Autonomous System23
AS17557 · Pakistan Telecommunication Company Limited11
AS21299 · Kar-Tel LLC7
AS7552 · Viettel Group6
AS45899 · VNPT Corp6
AS9541 · Cyber Internet Services (Pvt) Ltd.6
AS15399 · Wananchi Group (Kenya) Limited4
AS270068 · DESARROLLO DE INFRAESTRUCTURA DE TELECOMUNICACIONES PERU S.A.C. (INFRATEL)4
AS2860 · NOS COMUNICACOES, S.A.3
AS18403 · FPT Telecom Company3