TCP SYN (p0f)

4:241+14:0:1452:65535,6:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-09-02 20:01 · last seen 2026-10-24 17:25 · JSON

Last 7 days (1 observations)

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

IP version4
Initial TTL241+14
Options length0
MSS1452
Window size65535
Window scale6
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
t13d4312h1_c7886603b240_b26ce05bbdd61
t13d1515h1_8daaf6152771_de4a06bb82e31
t13d1617h1_86a278354501_3cbfd9057e0d1

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.1
ge11nn13enus_9db22d02e17a_000000000000_0000000000001
ge11nr11enus_5eb2ef639ff5_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1452_63

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 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
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:157.0) Gecko/20100101 Firefox/157.01

Country

fingerprintco-occurrences
BR · Brazil1
ID · Indonesia1
IN · India1

Network (ASN)

fingerprintco-occurrences
AS7713 · PT Telekomunikasi Indonesia1
AS267675 · AKI NET TELECOM LTDA ME1
AS56209 · AIRLINK TELESERVICES PRIVATE LIMITED1

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.3.1, curl 7.88.1, curl 8.13.0, +10 more.The fingerprint page shows the full measured match list. More on the catalog.1
11ec,001d,0017,0018,0019,0100,01011