TCP SYN (p0f)

4:54+10:0:1452:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:id-,ecn:0

first seen 2026-09-04 04:09 · last seen 2026-09-04 04:09 · JSON

Decomposed attributes

IP version4
Initial TTL54+10
Options length0
MSS1452
Window size65535
Window scale6
Options layoutmss,nop,ws,nop,nop,ts,sok,eol+1
Quirksid-,ecn
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
t13d181000_5d04281c6031_78e6aca7449b1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_2469c960a647_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-8-4-0-0_1452_61

User-Agent

fingerprintco-occurrences
Claude-User (claude-code/2.1.252; +https://support.anthropic.com/)1

Country

fingerprintco-occurrences
RU · Russia1

Network (ASN)

fingerprintco-occurrences
AS12389 · PJSC Rostelecom1