TCP SYN (p0f)

4:43+21:0:1460:mss*44,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-01 14:34 · last seen 2026-07-01 15:35 · JSON

Decomposed attributes

IP version4
Initial TTL43+21
Options length0
MSS1460
Window sizemss*44
Window scale8
Options layoutmss,sok,ts,nop,ws
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
t13d190900_9dc949149365_97f8aa674fd93
t12d1609h2_8cdfa2d4673b_f9c1bad5661c1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07*000_b23b8373b424_000000000000_0000000000002
ge11nn08*000_d55d57da3167_000000000000_0000000000001
he20nn010000_a510e5066512_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:4194304;6:8192|1073741824|0|a,m,p,s1

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_84

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.62 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.361

Country

fingerprintco-occurrences
FR · France4

Network (ASN)

fingerprintco-occurrences
AS16276 · OVH SAS4