TLS ClientHello (JA4)

t13d170900_d1c966aaa946_4c1ab0552904

first seen 2026-10-13 10:30 · last seen 2026-10-13 10:30 · JSON

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

Protocolt (TLS over TCP)
TLS version13
SNId (domain)
Cipher count17
Extension count9
ALPN00
Ciphers002f, 0035, 009c, 009d, 00ff, 1301, 1302, 1303, c009, c00a, c013, c014, c027, c02b, c02c, c02f, c030
Extensions000a, 000b, 000d, 0015, 0017, 002b, 002d, 0033
Signature algorithms0601, 0603, 0806, 0501, 0503, 0805, 0401, 0403, 0804, 0201, 0203
JA4_rt13d170900_002f,0035,009c,009d,00ff,1301,1302,1303,c009,c00a,c013,c014,c027,c02b,c02c,c02f,c030_000a,000b,000d,0015,0017,002b,002d,0033_0601,0603,0806,0501,0503,0805,0401,0403,0804,0201,0203
JA4_o (sample)t13d170900_afcbd7218d8e_b446a30abf19
JA4_ro (sample)t13d170900_1302,1301,1303,c02c,c030,c02b,c02f,c027,009d,009c,c00a,c014,c009,c013,0035,002f,00ff_0000,000b,000a,0017,000d,002b,002d,0033,0015_0601,0603,0806,0501,0503,0805,0401,0403,0804,0201,0203

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
ge11nn050000_2469c960a647_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:121+7:0:1343:65535,8:mss,nop,ws,nop,nop,sok:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1343_81

User-Agent

fingerprintco-occurrences
Claude-User (claude-code/2.1.295; +https://support.anthropic.com/)1

Country

fingerprintco-occurrences
FR · France1

Network (ASN)

fingerprintco-occurrences
AS394089 · Google LLC1