TCP SYN (p0f)

4:110+18:0:1360:mss*48,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-07-30 13:33 · last seen 2026-07-30 13:33 · JSON

Decomposed attributes

IP version4
Initial TTL110+18
Options length0
MSS1360
Window sizemss*48
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+,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
t13d1812h1_85036bcba153_d41ae481755e1

HTTP request (JA4H)

fingerprintco-occurrences
ge11cn040000_e1d2031bdfea_b04fd684bb87_349cc859444c1

TCP SYN (JA4T)

fingerprintco-occurrences
65280_2-1-3-1-1-4_1360_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 compatible; FastSourceScanner/1.01

Country

fingerprintco-occurrences
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS213790 · Limited Network LTD1