TLS ClientHello (JA4)

t12d210700_76e208dd3e22_2dae41c691ec

first seen 2026-06-11 02:08 · last seen 2026-10-29 16:38 · JSON

Last 7 days (2 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

Protocolt (TLS over TCP)
TLS version12
SNId (domain)
Cipher count21
Extension count7
ALPN00
Ciphers000a, 002f, 0035, 003c, 003d, 009c, 009d, 009e, 009f, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030
Extensions000a, 000b, 000d, 0017, 0023, ff01
Signature algorithms0804, 0805, 0806, 0401, 0501, 0201, 0403, 0503, 0203, 0202, 0601, 0603
JA4_rt12d210700_000a,002f,0035,003c,003d,009c,009d,009e,009f,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030_000a,000b,000d,0017,0023,ff01_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603
JA4_o (sample)t12d210700_93eee3d26c42_e7395bd2f4a9
JA4_ro (sample)t12d210700_c02c,c02b,c030,c02f,009f,009e,c024,c023,c028,c027,c00a,c009,c014,c013,009d,009c,003d,003c,0035,002f,000a_0000,000a,000b,000d,0023,0017,ff01_0804,0805,0806,0401,0501,0201,0403,0503,0203,0202,0601,0603

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.

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn12enus_d9dcce99a5ac_000000000000_00000000000022
ge11nn040000_cf1edba2959c_000000000000_0000000000004
ge11nn030000_b0d6a43aa599_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 5.1.26100.33296, powershell 5.1.26100.33158, powershell 5.1.26100.33438, +3 more.The fingerprint page shows the full measured match list. More on the catalog.3
ge11nn030000_cd680697de12_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.6, powershell 7.6.5, powershell 7.6.4, +11 more.The fingerprint page shows the full measured match list. More on the catalog.2
ge11nn010000_4a823118b9ba_000000000000_0000000000002
ge11nn050000_2469c960a647_000000000000_0000000000002
ge11nr030000_476ea6bb1469_000000000000_0000000000002
ge11nn050000_2939afa383b9_000000000000_0000000000001
ge11nn040000_cd25483f4169_000000000000_0000000000001
ge11nn040000_cabeb744284e_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:017
4:115+13:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:04
4:114+14:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:02
6:51+13:0:1360:65535,13:mss,sok,ts,nop,ws:flow:02
4:51+13:0:1460:mss*44,14:mss,sok,ts,nop,ws:df,id+:02
4:120+8:0:9002:mss*7,8:mss,nop,ws,nop,nop,sok:df,id+:02
4:104+24:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:119+9:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:105+23:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:111+17:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_717
64240_2-1-3-1-1-4_1460_86
64240_2-4-8-1-3_1460_143
65535_2-4-8-1-3_1360_132
65170_2-4-8-1-3_1330_102
63014_2-1-3-1-1-4_9002_82
27136_2-4-8-1-3_1320_71
64800_2-1-3-1-1-4_1420_81
64800_2-1-3-1-1-4_1230_81
64800_2-1-1-4_1440_001

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36 Edg/149.0.0.022
Mozilla/5.04
Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)3
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/124 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.361
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 Version/17.0 Safari/605.1.151
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/129.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Microsoft Windows 10.0.19045; en-US) PowerShell/7.6.01
Mozilla/5.0 (Windows NT 10.0; Microsoft Windows 10.0.19045; en-US) PowerShell/7.6.41

Country

fingerprintco-occurrences
IN · India19
US · United States6
SG · Singapore5
CA · Canada3
RU · Russia3
NL · Netherlands1
JP · Japan1
BR · Brazil1
RO · Romania1
HK · Hong Kong SAR China1

Network (ASN)

fingerprintco-occurrences
AS40676 · Psychz Networks17
AS14061 · DigitalOcean, LLC4
AS36352 · HostPapa3
AS212667 · RECONN LLC3
AS13335 · Cloudflare, Inc.2
AS19901 · Brightspeed2
AS209854 · Cyberzone S.A.2
AS40934 · Fortinet Inc.2
AS47890 · UNMANAGED LTD1
AS55836 · Reliance Jio Infocomm Limited1

TLS supported groups

fingerprintco-occurrences
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.2