TCP SYN (JA4T)

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

first seen 2026-07-29 17:23 · last seen 2026-10-27 08:08 · JSON

Last 7 days (14 observations)

Distinct clients per day (last 30 days, peak 3/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_b26ce05bbdd6216
t13d181100_85036bcba153_d41ae481755e28
t13d1812h1_85036bcba153_d41ae481755e22
t13d1712h1_ab0a1bf427ad_882d495ac38111
t13d1813h1_85036bcba153_d339722ba4af8
t13d1311h2_f57a46bbacb6_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12, go-net/http 1.24.13.The fingerprint page shows the full measured match list. More on the catalog.6

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07enus_6f5b1826d533_000000000000_000000000000188
ge11nr07enus_6f5b1826d533_000000000000_00000000000021
ge11nn06enus_a89d28968959_000000000000_00000000000017
ge11nn050000_3658ef221638_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.21.4, wget 1.25.0, wget 1.21.3.The fingerprint page shows the full measured match list. More on the catalog.9
po11nn060000_d8e0803a0d25_000000000000_0000000000008
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.6
ge11nn040000_5b1e8b5f4d2d_000000000000_0000000000006
ge11nn060000_a284f3d85baf_000000000000_0000000000006
ge20nn020000_fb4f949fd323_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.6, powershell 7.6.8.The fingerprint page shows the full measured match list. More on the catalog.5
ge11nn06enus_98e697c2fa06_000000000000_0000000000005

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:4194304;5:16384;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.10, go-net/http 1.26.9, +8 more.The fingerprint page shows the full measured match list. More on the catalog.6

TCP SYN (p0f)

fingerprintco-occurrences
4:106+22:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0141
4:118+10:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:077
4:120+8:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:033
4:111+17:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:017
4:119+9:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:04
4:113+15:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:04
4:114+14:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:105+23:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:110+18:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:117+11:0:1460:62720,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.3617
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.3611
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.09
cve-2026-63030/1.08
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 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.366
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.366

Country

fingerprintco-occurrences
AE · United Arab Emirates156
JP · Japan48
SG · Singapore42
AU · Australia30
SA · Saudi Arabia15

Network (ASN)

fingerprintco-occurrences
AS31898 · Oracle Corporation291

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog.47
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 157.0.1, firefox-esr 153.5.1esr, firefox 158.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.6