TCP SYN (p0f)

4:48+16:0:1400:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,id+:0

first seen 2026-08-07 10:18 · last seen 2026-08-15 17:48 · JSON

Decomposed attributes

IP version4
Initial TTL48+16
Options length0
MSS1400
Window size65535
Window scale6
Options layoutmss,nop,ws,nop,nop,ts,sok,eol+1
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
t13d3112h2_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.3
t13d3013h2_1d37bd780c83_8537cf56674e2

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 8.18.0, +9 more.The fingerprint page shows the full measured match list. More on the catalog.5

HTTP/2 frames (Akamai)

fingerprintco-occurrences
3:100;4:10485760;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0.The fingerprint page shows the full measured match list. More on the catalog.3
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, +7 more.The fingerprint page shows the full measured match list. More on the catalog.2

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-8-4-0-0_1400_65

User-Agent

fingerprintco-occurrences
curl/8.5.03
curl/8.21.02

Country

fingerprintco-occurrences
TR · Turkey4
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS51801 · INTERNET KUTUSU TELEKOMUNIKASYON BILISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI4
AS214036 · Ultahost, Inc.1