TCP SYN (JA4T)

65535_2-4-8-1-3_1339_6

first seen 2026-07-21 20:57 · last seen 2026-09-11 22:21 · JSON

Last 7 days (1 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

TCP window65535
Option kinds2-4-8-1-3
MSS1339
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_58ed7828516f8
t13d1515h1_8daaf6152771_0a20fe35d3a56
t13d1515h1_8daaf6152771_de4a06bb82e34
t13d1516h1_8daaf6152771_1a63afa7c4781

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_0000000000008
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.8
ge11nn14enus_4a2973d235de_000000000000_0000000000003

TCP SYN (p0f)

fingerprintco-occurrences
4:41+23:0:1339:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:39+25:0:1339:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:47+17:0:1339:65535,6:mss,sok,ts,nop,ws:df,id+:03
4:51+13:0:1339:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:46+18:0:1339:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:49+15:0:1339:65535,6:mss,sok,ts,nop,ws::01
4:48+16:0:1339:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:40+24:0:1339:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:45+19:0:1339:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:53+11:0:1339:65535,6: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/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.361
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
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/537.36 (KHTML, like Gecko, Mediapartners-Google) Chrome/84.0.4147.108 Safari/537.361

Country

fingerprintco-occurrences
ET · Ethiopia4
TG · Togo4
TR · Turkey3
CO · Colombia3
AR · Argentina2
PY · Paraguay1
MX · Mexico1
LV · Latvia1

Network (ASN)

fingerprintco-occurrences
AS24691 · TogoTelecom, Togo4
AS328988 · SAFARICOM TELECOMMUNICATIONS ETHIOPIA PLC4
AS20978 · TT Mobil Iletisim Hizmetleri A.S3
AS7303 · Telecom Argentina S.A.2
AS26611 · COMUNICACIÓN CELULAR S.A. COMCEL S.A.2
AS11664 · Techtel LMDS Comunicaciones Interactivas S.A.1
AS10620 · Telmex Colombia S.A.1
AS1257 · Tele2 Sverige AB1
AS265540 · ALTAN REDES, S.A.P.I. de C. V.1