TLS ClientHello (JA4)

t13d9112h1_0d5420ba6086_ec21bdc2dd35

first seen 2026-07-11 01:58 · last seen 2026-09-10 14:13 · JSON

Last 7 days (9 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
SNId (domain)
Cipher count91
Extension count12
ALPNh1
Ciphers002f, 0032, 0033, 0034, 0035, 0038, 0039, 003a, 003c, 003d, 0040, 0041, 0044, 0045, 0046, 0067, 006a, 006b, 006c, 006d, 0084, 0087, 0088, 0089, 0096, 0099, 009a, 009b, 009c, 009d, 009e, 009f, 00a2, 00a3, 00a6, 00a7, 00ba, 00bd, 00be, 00bf, 00c0, 00c3, 00c4, 00c5, 00ff, 1301, 1302, 1303, c009, c00a, c013, c014, c018, c019, c023, c024, c027, c028, c02b, c02c, c02f, c030, c050, c051, c052, c053, c056, c057, c05c, c05d, c060, c061, c072, c073, c076, c077, c09c, c09d, c09e, c09f, c0a0, c0a1, c0a2, c0a3, c0ac, c0ad, c0ae, c0af, cca8, cca9, ccaa
Extensions000a, 000b, 000d, 0016, 0017, 001b, 0023, 002b, 002d, 0033
Signature algorithms0905, 0906, 0904, 0403, 0503, 0603, 0807, 0808, 081a, 081b, 081c, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0203, 0301, 0201, 0302, 0202, 0402, 0502, 0602
JA4_rt13d9112h1_002f,0032,0033,0034,0035,0038,0039,003a,003c,003d,0040,0041,0044,0045,0046,0067,006a,006b,006c,006d,0084,0087,0088,0089,0096,0099,009a,009b,009c,009d,009e,009f,00a2,00a3,00a6,00a7,00ba,00bd,00be,00bf,00c0,00c3,00c4,00c5,00ff,1301,1302,1303,c009,c00a,c013,c014,c018,c019,c023,c024,c027,c028,c02b,c02c,c02f,c030,c050,c051,c052,c053,c056,c057,c05c,c05d,c060,c061,c072,c073,c076,c077,c09c,c09d,c09e,c09f,c0a0,c0a1,c0a2,c0a3,c0ac,c0ad,c0ae,c0af,cca8,cca9,ccaa_000a,000b,000d,0016,0017,001b,0023,002b,002d,0033_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0203,0301,0201,0302,0202,0402,0502,0602
JA4_o (sample)t13d9112h1_7386cacf7a04_5946ad92582f
JA4_ro (sample)t13d9112h1_1302,1303,1301,c02c,c030,00a3,009f,cca9,cca8,ccaa,c0ad,c09f,c05d,c061,c057,c053,00a7,c02b,c02f,00a2,009e,c0ac,c09e,c05c,c060,c056,c052,00a6,c0af,c0ae,c0a3,c0a2,c024,c028,006b,006a,c073,c077,00c4,00c3,006d,00c5,c023,c027,0067,0040,c072,c076,00be,00bd,006c,00bf,c00a,c014,0039,0038,0088,0087,c019,003a,0089,c009,c013,0033,0032,009a,0099,0045,0044,c018,0034,009b,0046,009d,c09d,c051,009c,c09c,c050,c0a1,c0a0,003d,00c0,003c,00ba,0035,0084,002f,0096,0041,00ff_0000,000b,000a,0023,0010,0016,0017,000d,002b,002d,0033,001b_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0203,0301,0201,0302,0202,0402,0502,0602

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
ge11nn040000_e1d2031bdfea_000000000000_0000000000008
ge11nn040000_66d37a417839_000000000000_0000000000001
ge11nn05enus_f3bb7aa45ec4_000000000000_0000000000001
ge11nn060000_c1920bcd4c9a_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:51+13:0:1460:mss*44,12:mss,sok,ts,nop,ws:df,id+:03
6:51+13:0:1440:mss*45,12:mss,sok,ts,nop,ws:flow:02
6:52+12:0:1440:mss*45,12:mss,sok,ts,nop,ws:flow:02
4:50+14:0:1460:mss*44,12:mss,sok,ts,nop,ws:df,id+:02
4:56+8:0:1460:mss*44,9:mss,sok,ts,nop,ws:df,id+:01
6:55+9:0:1440:mss*45,10:mss,sok,ts,nop,ws:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_125
64800_2-4-8-1-3_1440_124
64800_2-4-8-1-3_1440_101
64240_2-4-8-1-3_1460_91

User-Agent

fingerprintco-occurrences
Mozilla/5.09
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0 Safari/537.361
Python/3.14 aiohttp/3.14.31

Country

fingerprintco-occurrences
BR · Brazil9
US · United States2

Network (ASN)

fingerprintco-occurrences
AS28573 · Claro NXT Telecomunicacoes Ltda9
AS14956 · RouterHosting LLC2