TCP SYN (JA4T)

62720_2-1-3-1-1-4_1460_8

first seen 2026-07-29 17:23 · last seen 2026-09-10 18:24 · JSON

Last 7 days (43 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

TCP window62720
Option kinds2-1-3-1-1-4
MSS1460
Window scale8

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
t13d1812h1_85036bcba153_b26ce05bbdd6210
t13d1712h1_ab0a1bf427ad_882d495ac38111

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07enus_6f5b1826d533_000000000000_000000000000188
ge11nr07enus_6f5b1826d533_000000000000_00000000000021
ge11nr15enus_21d8bfafe465_000000000000_0000000000002
ge11nr16enus_5a050224e10c_000000000000_0000000000002
ge11nr13enus_6b2e90fc445e_000000000000_0000000000001
ge11nr14enus_36d9c6e74f69_000000000000_0000000000001
ge11nn14enus_f26ea99f52e5_000000000000_0000000000001
ge11nr13engb_35535d746e3a_000000000000_0000000000001
ge11nn07enus_f962ba77b700_000000000000_0000000000001
ge11nn13enus_08ab3011146a_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:106+22:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0140
4:118+10:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:043
4:120+8:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:032
4:114+14:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:119+9:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Safari/605.1.157
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.0 Safari/605.1.157
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Safari/605.1.157
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.367
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.366
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.366
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.366
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.366
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.71 Safari/537.366
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Safari/605.1.156

Country

fingerprintco-occurrences
AE · United Arab Emirates140
JP · Japan46
SG · Singapore35

Network (ASN)

fingerprintco-occurrences
AS31898 · Oracle Corporation221