TLS ClientHello (JA4)

t13d131100_f57a46bbacb6_f50d94e863eb

first seen 2026-08-26 04:25 · last seen 2026-09-11 08:36 · JSON

Last 7 days (4 observations)

Distinct clients per day (last 30 days, peak 4/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 version13
SNId (domain)
Cipher count13
Extension count11
ALPN00
Ciphers1301, 1302, 1303, c009, c00a, c013, c014, c02b, c02c, c02f, c030, cca8, cca9
Extensions0005, 000a, 000b, 000d, 0012, 0017, 002b, 0032, 0033, ff01
Signature algorithms0904, 0905, 0906, 0804, 0403, 0807, 0805, 0806, 0401, 0501, 0601, 0503, 0603
JA4_rt13d131100_1301,1302,1303,c009,c00a,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,0017,002b,0032,0033,ff01_0904,0905,0906,0804,0403,0807,0805,0806,0401,0501,0601,0503,0603
JA4_o (sample)t13d131100_45672f90a73c_1c4e93964491
JA4_ro (sample)t13d131100_c02b,c02f,c02c,c030,cca9,cca8,c009,c013,c00a,c014,1301,1302,1303_0000,000b,ff01,0017,0012,0005,000a,000d,0032,002b,0033_0904,0905,0906,0804,0403,0807,0805,0806,0401,0501,0601,0503,0603

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
ge11nr040000_8391bea91fb6_000000000000_0000000000004
ge11nr030000_cd680697de12_000000000000_0000000000001
ge11nn040000_8391bea91fb6_000000000000_0000000000001
po11nn060000_cbb8722bf08d_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
6:55+9:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:02
4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:56+8:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:55+9:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:57+7:0:1420:mss*46,7:mss,sok,ts,nop,ws:df,id+:01
6:46+18:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_73
64800_2-4-8-1-3_1440_73
65320_2-4-8-1-3_1420_71

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64)5
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
SG · Singapore3
US · United States2
DE · Germany1
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS14956 · RouterHosting LLC4
AS396982 · Google LLC1
AS197170 · TechTies Inc.1
AS202053 · UpCloud Ltd1