TCP SYN (JA4T)

29200_2-4-8-1-3_1452_4

first seen 2026-07-24 04:18 · last seen 2026-09-04 19:29 · JSON

Distinct clients per day (last 30 days, peak 1/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 window29200
Option kinds2-4-8-1-3
MSS1452
Window scale4

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_58ed7828516f7
t13d1516h1_8daaf6152771_1a63afa7c4781

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.7
ge11nn13enus_9db22d02e17a_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:50+14:0:1452:mss*20,4:mss,sok,ts,nop,ws:df,id+:01
4:53+11:0:1452:mss*20,4:mss,sok,ts,nop,ws:df,id+:01
4:54+10:0:1452:mss*20,4:mss,sok,ts,nop,ws:df,id+:01
4:45+19:0:1452:mss*20,4:mss,sok,ts,nop,ws:df,id+:01
4:47+17:0:1452:mss*20,4:mss,sok,ts,nop,ws:df,id+:01
4:48+16:0:1452:mss*20,4:mss,sok,ts,nop,ws:df,id+:01
4:52+12:0:1452:mss*20,4:mss,sok,ts,nop,ws:df,id+:01
4:49+15:0:1452:mss*20,4:mss,sok,ts,nop,ws:df,id+:01

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4889.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 ADG/11.0.2566 AOLBUILD/11.0.2566 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.80 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.80 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.81 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.361

Country

fingerprintco-occurrences
VE · Venezuela2
HU · Hungary1
BY · Belarus1
SI · Slovenia1
DZ · Algeria1
IQ · Iraq1
PR · Puerto Rico1

Network (ASN)

fingerprintco-occurrences
AS21826 · Corporación Telemic C.A.2
AS5603 · Telekom Slovenije, d.d.1
AS36947 · Telecom Algeria1
AS6697 · Republican Unitary Telecommunication Enterprise Beltelecom1
AS206206 · Kurdistan Net Company for Computer and Internet Ltd.1
AS203084 · Mikrotti Kft1
AS10396 · DATACOM CARIBE, INC.1