TCP SYN (p0f)

4:52+12:0:1412:65535,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-20 18:19 · last seen 2026-09-15 06:51 · JSON

Last 7 days (5 observations)

Distinct clients per day (last 30 days, peak 8/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 TTL52+12
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_58ed7828516f21
t13d1515h1_8daaf6152771_de4a06bb82e319
t13d1515h1_8daaf6152771_0a20fe35d3a517
t13d1516h1_8daaf6152771_1a63afa7c4783

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_00000000000027
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.21
ge11nn14enus_4a2973d235de_000000000000_00000000000012

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1412_860

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.366
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.364
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.364
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 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 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.362

Country

fingerprintco-occurrences
PK · Pakistan18
MX · Mexico7
EG · Egypt5
TT · Trinidad & Tobago4
US · United States3
MA · Morocco3
CI · Côte d’Ivoire3
BR · Brazil2
GB · United Kingdom2
GA · Gabon2

Network (ASN)

fingerprintco-occurrences
AS17557 · Pakistan Telecommunication Company Limited18
AS8151 · Uninet S.A. de C.V.5
AS8452 · TE-AS5
AS27800 · Digicel Trinidad and Tobago Ltd.4
AS37190 · Atlantique Telecom (Cote d'Ivoire)3
AS7029 · Windstream Communications LLC2
AS36925 · MEDITELECOM2
AS36924 · GVA Cote d'Ivoire SAS2
AS16058 · Gabon Telecom / Office of Posts and Telecommunications of Gabon2
AS213671 · Vision Fibre Media Ltd.2