TCP SYN (p0f)

4:41+23:0:1460:65535,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-20 13:30 · last seen 2026-09-09 10:11 · 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

IP version4
Initial TTL41+23
Options length0
MSS1460
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_58ed7828516f15
t13d1515h1_8daaf6152771_0a20fe35d3a57
t13d1515h1_8daaf6152771_de4a06bb82e35

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.15
ge11nn13enus_9db22d02e17a_000000000000_0000000000008
ge11nn14enus_4a2973d235de_000000000000_0000000000004

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1460_827

User-Agent

fingerprintco-occurrences
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/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/124.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 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/104.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_16_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.361

Country

fingerprintco-occurrences
MX · Mexico5
RU · Russia5
UZ · Uzbekistan4
ZA · South Africa3
AR · Argentina2
US · United States1
GB · United Kingdom1
SE · Sweden1
IT · Italy1
KE · Kenya1

Network (ASN)

fingerprintco-occurrences
AS59668 · Turon Media XK3
AS13999 · Mega Cable, S.A. de C.V.2
AS28548 · Cablevisión, S.A. de C.V.2
AS12874 · Fastweb SpA1
AS51809 · BRSK Limited1
AS1257 · Tele2 Sverige AB1
AS36947 · Telecom Algeria1
AS15081 · Omni Fiber1
AS7303 · Telecom Argentina S.A.1
AS15399 · Wananchi Group (Kenya) Limited1