TLS ClientHello (JA4)

t13d1812h1_6c2ba73853a4_d41ae481755e

first seen 2026-07-04 15:49 · last seen 2026-07-04 15:49 · JSON

Decomposed attributes

Protocolt (TLS over TCP)
TLS version13
SNId (domain)
Cipher count18
Extension count12
ALPNh1
Ciphers002f, 0033, 0035, 0039, 00ff, 1301, 1302, 1303, c009, c00a, c013, c014, c02b, c02c, c02f, c030, cca8, cca9
Extensions000a, 000b, 000d, 0015, 0016, 0017, 0023, 002b, 002d, 0033
Signature algorithms0403, 0503, 0603, 0807, 0808, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301, 0302, 0402, 0502, 0602
JA4_rt13d1812h1_002f,0033,0035,0039,00ff,1301,1302,1303,c009,c00a,c013,c014,c02b,c02c,c02f,c030,cca8,cca9_000a,000b,000d,0015,0016,0017,0023,002b,002d,0033_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602
JA4_o (sample)t13d1812h1_a5b07b8d0dcc_958d92f00bb5
JA4_ro (sample)t13d1812h1_1302,1303,1301,c02b,c02f,cca9,cca8,c02c,c030,c00a,c009,c013,c014,0033,0039,002f,0035,00ff_0000,000b,000a,0023,0010,0016,0017,000d,002b,002d,0033,0015_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602

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
ge11nn05enus_f3bb7aa45ec4_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:117+11:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
62727_2-4-8-1-3_1460_71

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.01

Country

fingerprintco-occurrences
US · United States1

Network (ASN)

fingerprintco-occurrences
AS14618 · Amazon.com, Inc.1