TCP SYN (JA4T)

64240_2-4-8-1-3_1456_7

first seen 2026-07-23 22:52 · last seen 2026-09-02 21:59 · 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 window64240
Option kinds2-4-8-1-3
MSS1456
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_de4a06bb82e32
t13d1517h2_8daaf6152771_b1ff8ab2d16f1
t13d1515h1_8daaf6152771_0a20fe35d3a51

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_0000000000002
ge20nr13enus_e2ac93ffb364_000000000000_0000000000001
ge11nn14enus_4a2973d235de_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, +43 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:53+11:0:1456:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:48+16:0:1456:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:44+20:0:1456:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:47+17:0:1456:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:37+27:0:1456:mss*44,7: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/136.0.0.0 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_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 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 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.96 Safari/537.361
Mozilla/5.0 (Windows NT 6.3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.190 Safari/537.361
Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.60 Safari/537.361

Country

fingerprintco-occurrences
UA · Ukraine3
RU · Russia2
BG · Bulgaria1
ES · Spain1
CL · Chile1

Network (ASN)

fingerprintco-occurrences
AS13188 · CONTENT DELIVERY NETWORK LTD1
AS22047 · VTR BANDA ANCHA S.A.1
AS6768 · EUROTELE-PLUS LLC1
AS197144 · PP SVS Stream1
AS35699 · Adamo Telecom Iberia S.A.1
AS12714 · PJSC MegaFon1
AS41704 · JSC Ufanet1
AS43068 · Pladi Computers Ltd.1