TCP SYN (p0f)

4:53+11:0:1460:mss*44,0:mss,sok,ts:df,id+:0

first seen 2026-06-25 11:44 · last seen 2026-09-15 00:05 · JSON

Last 7 days (3 observations)

Distinct clients per day (last 30 days, peak 2/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 TTL53+11
Options length0
MSS1460
Window sizemss*44
Window scale0
Options layoutmss,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
t12i130500_2d7513195f68_e51b7354d87f97
t13d751100_479067518aa3_d41ae481755e2

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr040000_e1d2031bdfea_000000000000_00000000000092
ge11nr040000_88d30a62b7ad_000000000000_0000000000005
po11nn090000_4d3d8809f05c_000000000000_0000000000001
he11nn080000_ee272586b522_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8_1460_0093

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 13_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.3697
AnyConnect Darwin_i386 3.1.051602

Country

fingerprintco-occurrences
US · United States99

Network (ASN)

fingerprintco-occurrences
AS63949 · Akamai Connected Cloud99