TCP SYN (p0f)

4:52+12:0:1460:65535,6:mss,nop,ws,sok,ts:df,id+:0

first seen 2026-06-28 11:19 · last seen 2026-07-30 08:58 · JSON

Decomposed attributes

IP version4
Initial TTL52+12
Options length0
MSS1460
Window size65535
Window scale6
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
t13d2610h2_6d1bcf7a4624_188c7f576dcd11
t13d260900_6d1bcf7a4624_188c7f576dcd8
t13d151000_bd33cfcc426e_6955a1a97dca1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr11enus_b58f2e363a6d_000000000000_0000000000005
ge20nr10enus_46e944d5de42_000000000000_0000000000004
ge11nn14enus_d9d4fb46dcb1_000000000000_0000000000002
ge20nn11enus_b58f2e363a6d_000000000000_0000000000002
ge11nr13ja00_695efbec79f4_000000000000_0000000000002
ge11nr15enus_1d524ce1c055_000000000000_0000000000001
ge11nn14enus_b8b6b186c967_000000000000_0000000000001
ge11nr15enus_d29420ce31fc_000000000000_0000000000001
ge11cr15enus_d29420ce31fc_24ee958ca34c_f65de8bc45491
ge11nr13ja00_66beaa3271a2_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
4:32768;3:100;2:0|4128769|1:0:0:42|a,m,p,s2
4:32768;3:100;2:0|4128769|5:0:0:22|a,m,p,s1
4:32768;3:100;2:0|4128769|3:0:0:22|a,m,p,s1
4:32768;3:100;2:0|4128769|15:0:0:42|a,m,p,s1
4:32768;3:100;2:0|4128769|9:0:0:42|a,m,p,s1
4:32768;3:100;2:0|4128769|7:0:0:22|a,m,p,s1
4:32768;3:100;2:0|4128769|11:0:0:42|a,m,p,s1
4:32768;3:100;2:0|4128769|13:0:0:42|a,m,p,s1
4:32768;3:100;2:0|4128769|5:0:0:42|a,m,p,s1
4:32768;3:100;2:0|4128769|1:0:0:22|a,m,p,s1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-4-8_1460_618

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:152.0) Gecko/20100101 Firefox/152.011
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36 Edg/150.0.0.05
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36 Edg/149.0.0.01

Country

fingerprintco-occurrences
SG · Singapore11
JP · Japan3
IL · Israel3
NL · Netherlands2
US · United States1

Network (ASN)

fingerprintco-occurrences
AS53813 · ZSCALER, INC.14
AS62044 · Zscaler Switzerland GmbH5
AS22616 · ZSCALER, INC.1