TLS ClientHello (JA4)

t13i190800_9dc949149365_558910e692bf

first seen 2026-10-27 13:41 · last seen 2026-10-30 15:11 · JSON

Last 7 days (6 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 version13
SNIi (no SNI / IP)
Cipher count19
Extension count8
ALPN00
Ciphers000a, 002f, 0035, 009c, 009d, 1301, 1302, 1303, c009, c00a, c012, c013, c014, c02b, c02c, c02f, c030, cca8, cca9
Extensions0005, 000a, 000b, 000d, 0012, 002b, 0033, ff01
Signature algorithms0804, 0403, 0807, 0805, 0806, 0401, 0501, 0601, 0503, 0603, 0904, 0905, 0906, 0201, 0203
JA4_rt13i190800_000a,002f,0035,009c,009d,1301,1302,1303,c009,c00a,c012,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_0005,000a,000b,000d,0012,002b,0033,ff01_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0904,0905,0906,0201,0203
JA4_o (sample)t13i190800_f2ce2cda000b_4987dc8184a3
JA4_ro (sample)t13i190800_cca8,cca9,c02f,c030,c02b,c02c,c013,c009,c014,c00a,009c,009d,002f,0035,c012,000a,1303,1301,1302_0005,000a,000b,000d,ff01,0012,002b,0033_0804,0403,0807,0805,0806,0401,0501,0601,0503,0603,0904,0905,0906,0201,0203

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_e1d2031bdfea_000000000000_0000000000006

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:05
4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_76

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36 ModatScanner/1.2 (+https://modat.io/)6

Country

fingerprintco-occurrences
CA · Canada5
FR · France1

Network (ASN)

fingerprintco-occurrences
AS209334 · Modat B.V.6

TLS supported groups

fingerprintco-occurrences
001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.21.13.The fingerprint page shows the full measured match list. More on the catalog.6