TCP SYN (p0f)

6:55+9:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:ecn,flow:0

first seen 2026-07-01 22:13 · last seen 2026-08-04 22:55 · JSON

Decomposed attributes

IP version6
Initial TTL55+9
Options length0
MSS1440
Window size65535
Window scale6
Options layoutmss,nop,ws,nop,nop,ts,sok,eol+1
Quirksecn,flow
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
t13d4907h2_0d8feac7bc37_7395dae3b2f3 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1.The fingerprint page shows the full measured match list. More on the catalog.5
t13d1313h2_f57a46bbacb6_7f0f34a4126d1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn020000_e5a56608905c_000000000000_0000000000005
ge20nn08frfr_6452f234bcf7_000000000000_0000000000001

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.5
2:0;4:2097152;3:100;9:1|10485760|0|m,s,p,a1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-8-4-0-0_1440_66

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.365
Mozilla/5.0 (compatible; RedditApp/1.0)1

Country

fingerprintco-occurrences
US · United States5
FR · France1

Network (ASN)

fingerprintco-occurrences
AS14593 · Space Exploration Technologies Corporation5
AS3215 · Orange S.A.1