TCP SYN (p0f)

4:40+24:0:1412:65535,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-23 20:08 · last seen 2026-09-09 22:33 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 5/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

IP version4
Initial TTL40+24
Options length0
MSS1412
Window size65535
Window scale8
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+
Payload class0

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_58ed7828516f14
t13d1515h1_8daaf6152771_de4a06bb82e39
t13d1515h1_8daaf6152771_0a20fe35d3a58
t13d1516h1_8daaf6152771_1a63afa7c4784

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_00000000000015
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.14
ge11nn14enus_4a2973d235de_000000000000_0000000000006

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1412_835

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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.362
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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 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

Country

fingerprintco-occurrences
PK · Pakistan19
AR · Argentina3
KE · Kenya3
BR · Brazil2
ZA · South Africa2
AE · United Arab Emirates2
QA · Qatar1
VE · Venezuela1
IQ · Iraq1
OM · Oman1

Network (ASN)

fingerprintco-occurrences
AS9541 · Cyber Internet Services (Pvt) Ltd.17
AS33771 · Safaricom Limited2
AS15802 · Emirates Integrated Telecommunications Company PJSC2
AS132165 · Connect Communications2
AS37611 · AFRIHOST SP (PTY) LTD1
AS50010 · Omani Qatari Telecommunication Company SAOC1
AS264628 · CORPORACION FIBEX TELECOM, C.A.1
AS48728 · Vodafone Qatar P.Q.S.C1
AS198589 · Al-Jazeera Al-Arabiya Company for Communication and Internet LTD1
AS328977 · Wavex Internet Service Provider LTD1