TCP SYN (JA4T)

65535_2-4-8-1-3_1400_7

first seen 2026-06-30 16:22 · last seen 2026-09-13 22:21 · JSON

Decomposed attributes

TCP window65535
Option kinds2-4-8-1-3
MSS1400
Window scale7

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_58ed7828516f4
t13d1515h1_8daaf6152771_0a20fe35d3a52
t13d1515h1_8daaf6152771_de4a06bb82e32
t13d1516h2_8daaf6152771_02713d6af862 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog.1

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.4
ge11nn13enus_9db22d02e17a_000000000000_0000000000004
ge20nn12enus_c0858481ddaa_000000000000_0000000000001

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, +60 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:45+19:0:1400:65535,7:mss,sok,ts,nop,ws:df,id+:02
4:44+20:0:1400:65535,7:mss,sok,ts,nop,ws:df,id+:02
4:47+17:0:1400:65535,7:mss,sok,ts,nop,ws:df,id+:01
4:39+25:0:1400:65535,7:mss,sok,ts,nop,ws:df,id+:01
4:48+16:0:1400:65535,7:mss,sok,ts,nop,ws:df,id+:01
4:42+22:0:1400:65535,7:mss,sok,ts,nop,ws:df,id+:01
4:50+14:0:1400:65535,7: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/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/119.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.361
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Mobile 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 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1468.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/86.0.4240.75 Safari/537.361
Mozilla/5.0 (Windows NT 6.1) 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/92.0.4515.69 Safari/537.361

Country

fingerprintco-occurrences
ZA · South Africa4
NG · Nigeria2
IR · Iran1
HK · Hong Kong SAR China1
PK · Pakistan1

Network (ASN)

fingerprintco-occurrences
AS37105 · RAIN GROUP HOLDINGS (PTY) LTD3
AS29465 · MTN NIGERIA Communication limited2
AS21859 · Zenlayer Inc1
AS12091 · MTN SA1
AS59257 · CMPak Limited1
AS197207 · Mobile Communication Company of Iran PLC1