TCP SYN (p0f)

4:53+11:0:1240:65535,10:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-01 14:34 · last seen 2026-10-29 11:34 · 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 TTL53+11
Options length0
MSS1240
Window size65535
Window scale10
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
t13d3113h2_e8f1e7e78f70_ce5650b735ce11

HTTP request (JA4H)

fingerprintco-occurrences
ge20cn04enus_91b626dfdddd_a9337a894088_83d3e9453f1511

HTTP/2 frames (Akamai)

fingerprintco-occurrences
3:100;4:33554432;2:0|33488897|0|m,p,s,a Match?Exact match in Thumbprint's published controlled catalog captures: php-curl 7.88.1, curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.11

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1240_1011

User-Agent

fingerprintco-occurrences
TelegramBot (like TwitterBot)11

Country

fingerprintco-occurrences
NL · Netherlands11

Network (ASN)

fingerprintco-occurrences
AS62041 · Telegram Messenger Inc11

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,00181