TCP SYN (p0f)

4:120+8:0:1340:mss*48,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-07-27 11:35 · last seen 2026-07-27 11:35 · JSON

Decomposed attributes

IP version4
Initial TTL120+8
Options length0
MSS1340
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_b26ce05bbdd62

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr16engb_5a050224e10c_000000000000_0000000000001
ge11nr13enus_6b2e90fc445e_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64320_2-1-3-1-1-4_1340_82

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 13_6_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 13_6_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Safari/605.1.151

Country

fingerprintco-occurrences
US · United States2

Network (ASN)

fingerprintco-occurrences
AS11878 · tzulo, inc.2