TLS ClientHello (JA4)

t13d1212h2_a538d02d76d5_f6eeaf393d2e

first seen 2026-09-13 07:59 · last seen 2026-09-13 07:59 · JSON

Last 7 days (2 observations)

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 count12
Extension count12
ALPNh2
Ciphers00ff, 1301, 1302, 1303, c023, c024, c027, c028, c02b, c02c, c02f, c030
Extensions0005, 000a, 000b, 000d, 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_rt13d1212h2_00ff,1301,1302,1303,c023,c024,c027,c028,c02b,c02c,c02f,c030_0005,000a,000b,000d,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)t13d1212h2_3c962d0d4049_63c54f8ac228
JA4_ro (sample)t13d1212h2_1302,1303,1301,c02c,c02b,c030,c02f,c024,c023,c028,c027,00ff_0000,000b,000a,0023,0005,0010,0016,0017,000d,002b,002d,0033_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
ge20nn04enus_39a3ba4480e8_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: urlsession 6.1.2.The fingerprint page shows the full measured match list. More on the catalog.1
ge20nn020000_fb4f949fd323_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:65535|67043329|0|m,s,a,p2

TCP SYN (p0f)

fingerprintco-occurrences
4:53+11:0:1460:62727,10:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
62727_2-4-8-1-3_1460_102

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
US · United States2

Network (ASN)

fingerprintco-occurrences
AS14618 · Amazon.com, Inc.2