TCP SYN (JA4T)

65535_2-4-1-1-1-3_1360_8

first seen 2026-07-25 01:54 · last seen 2026-10-28 12:50 · JSON

Last 7 days (2 observations)

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 window65535
Option kinds2-4-1-1-1-3
MSS1360
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
t13d131100_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.5, go-net/http 1.26.4.The fingerprint page shows the full measured match list. More on the catalog.2
t13d4412h1_fd39b124ee10_58ed7828516f2
t13d2014h2_a09f3c656075_14788d8d241b1
t13d1515h1_8daaf6152771_0a20fe35d3a51
t13d1515h1_8daaf6152771_de4a06bb82e31

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.2
ge11nn13enus_9db22d02e17a_000000000000_0000000000002
ge20nn07enus_39faa4ed05e7_000000000000_0000000000001
ge11nr19frfr_4e9b73ab7510_000000000000_0000000000001
ge11nr19enus_4e9b73ab7510_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
4:2097152;3:100|10485760|1:0:0:255|m,s,p,a1

TCP SYN (p0f)

fingerprintco-occurrences
4:48+16:0:1360:65535,8:mss,sok,nop,nop,nop,ws:df,id+:03
4:44+20:0:1360:65535,8:mss,sok,nop,nop,nop,ws:df,id+:02
4:47+17:0:1360:65535,8:mss,sok,nop,nop,nop,ws:df,id+:01
4:45+19:0:1360:65535,8:mss,sok,nop,nop,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/537.36 Edg/120.0.0.01
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/110.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/86.0.4240.183 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7_16 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6.2 Mobile/15E148 Safari/604.11
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 Edg/121.0.0.01

Country

fingerprintco-occurrences
NG · Nigeria3
CN · China1
UA · Ukraine1
BD · Bangladesh1
PK · Pakistan1

Network (ASN)

fingerprintco-occurrences
AS36873 · Airtel Networks Limited3
AS24389 · GrameenPhone Ltd.1
AS56040 · China Mobile communications corporation1
AS24499 · Telenor Pakistan1
AS15895 · "Kyivstar" PJSC1

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 158.0.1, firefox 157.0, firefox 157.0.1, +5 more.The fingerprint page shows the full measured match list. More on the catalog.2