TCP SYN (JA4T)

65535_2-4-8-1-3_1420_10

first seen 2026-07-20 13:45 · last seen 2026-09-11 17:26 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 3/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
MSS1420
Window scale10

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_58ed7828516f18
t13d1515h1_8daaf6152771_0a20fe35d3a55
t13d1515h1_8daaf6152771_de4a06bb82e33
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.18
ge11nn13enus_9db22d02e17a_000000000000_0000000000006
ge11nn14enus_4a2973d235de_000000000000_0000000000003

TCP SYN (p0f)

fingerprintco-occurrences
4:45+19:0:1420:65535,10:mss,sok,ts,nop,ws:df,id+:013
4:48+16:0:1420:65535,10:mss,sok,ts,nop,ws:df,id+:03
4:49+15:0:1420:65535,10:mss,sok,ts,nop,ws:df,id+:02
4:52+12:0:1420:65535,10:mss,sok,ts,nop,ws:df,id+:02
4:43+21:0:1420:65535,10:mss,sok,ts,nop,ws:df,id+:02
4:46+18:0:1420:65535,10:mss,sok,ts,nop,ws:df,id+:02
4:50+14:0:1420:65535,10:mss,sok,ts,nop,ws:df,id+:01
4:44+20:0:1420:65535,10:mss,sok,ts,nop,ws:df,id+:01
4:47+17:0:1420:65535,10: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/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.362
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 (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/116.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.1483.27 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.361

Country

fingerprintco-occurrences
SN · Senegal13
TN · Tunisia2
JM · Jamaica2
DZ · Algeria2
IN · India1
ZA · South Africa1
AT · Austria1
MA · Morocco1
KE · Kenya1
EG · Egypt1

Network (ASN)

fingerprintco-occurrences
AS8346 · SONATEL-AS Autonomous System13
AS37492 · Orange Tunisie2
AS36903 · Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM1
AS9829 · National Internet Backbone1
AS8452 · TE-AS1
AS30689 · FLOW1
AS36947 · Telecom Algeria1
AS15399 · Wananchi Group (Kenya) Limited1
AS29571 · Orange Côte d'Ivoire1
AS33576 · Digicel Jamaica1