TCP SYN (p0f)

4:53+11:0:1452:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-21 10:39 · last seen 2026-08-21 15:01 · JSON

Decomposed attributes

IP version4
Initial TTL53+11
Options length0
MSS1452
Window sizemss*44
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
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
t13d3013h2_1d37bd780c83_8537cf56674e Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.18.0.The fingerprint page shows the full measured match list. More on the catalog.2
t13d181000_5d04281c6031_78e6aca7449b1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog.2
ge11nn050000_2469c960a647_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
3:100;4:65536;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.2

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1452_83

User-Agent

fingerprintco-occurrences
curl/8.14.12
Claude-User (claude-code/2.1.237; +https://support.anthropic.com/)1

Country

fingerprintco-occurrences
TH · Thailand3

Network (ASN)

fingerprintco-occurrences
AS23969 · TOT Public Company Limited3