TCP SYN (p0f)

4:237+18:0:1390:mss*46,8:mss,nop,ws,sok,ts:df,id+:0

first seen 2026-10-30 21:39 · last seen 2026-10-30 21:39 · JSON

Last 7 days (3 observations)

Distinct clients per day (last 30 days, peak 1/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

IP version4
Initial TTL237+18
Options length0
MSS1390
Window sizemss*46
Window scale8
Options layoutmss,nop,ws,sok,ts
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
t13d2013h2_a09f3c656075_7f0f34a4126d Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.6.2, safari 26.4, +2 more.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr09zhcn_538441e4e116_000000000000_0000000000002
ge20nn08zhcn_1945e0741196_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;3:100;4:2097152;9:1|10420225|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.6.2, safari 26.5, +2 more.The fingerprint page shows the full measured match list. More on the catalog.3

TCP SYN (JA4T)

fingerprintco-occurrences
63940_2-1-3-4-8_1390_83

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/27.0.1 Mobile/15E148 Safari/604.13

Country

fingerprintco-occurrences
FR · France3

Network (ASN)

fingerprintco-occurrences
AS3215 · Orange S.A.3

TLS supported groups

fingerprintco-occurrences
0a0a,11ec,001d,0017,0018,00193