TCP SYN (p0f)

4:115+13:0:1360:mss*48,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-27 03:07 · last seen 2026-09-25 13:41 · JSON

Decomposed attributes

IP version4
Initial TTL115+13
Options length0
MSS1360
Window sizemss*48
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
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
t13d1514h2_8daaf6152771_7bdcd1fc0afb4
t13d2913h1_723694b0fccc_5671b5df50291

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr11enus_3901d4197baf_000000000000_0000000000003
ge11nr11kokr_835281d8e5d9_000000000000_0000000000001
ge20nr10enus_d353d425b0bb_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;4:131072;5:16384|12517377|3:0:0:42|m,p,a,s Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 152.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.2
1:65536;2:0;4:131072;5:16384|12517377|7:0:0:42|m,p,a,s1
1:65536;2:0;4:131072;5:16384|12517377|5:0:0:42|m,p,a,s1

TCP SYN (JA4T)

fingerprintco-occurrences
65280_2-1-3-1-1-4_1360_85

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:156.0) Gecko/20100101 Firefox/156.04
Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/153.0 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
DE · Germany4
KR · South Korea1

Network (ASN)

fingerprintco-occurrences
AS59796 · StormWall s.r.o.4
AS4766 · Korea Telecom1