TLS ClientHello (JA4)
t13d1812h1_85036bcba153_d41ae481755e
first seen 2026-06-14 10:07 · last seen 2026-09-16 08:10 · JSON
Last 7 days (10 observations)
Distinct clients per day (last 30 days, peak 3/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
| Protocol | t (TLS over TCP) |
|---|---|
| TLS version | 13 |
| SNI | d (domain) |
| Cipher count | 18 |
| Extension count | 12 |
| ALPN | h1 |
| Ciphers | 0067, 006b, 009e, 009f, 00ff, 1301, 1302, 1303, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9 |
| Extensions | 000a, 000b, 000d, 0015, 0016, 0017, 0023, 002b, 002d, 0033 |
| Signature algorithms | 0403, 0503, 0603, 0807, 0808, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301, 0302, 0402, 0502, 0602 |
| JA4_r | t13d1812h1_0067,006b,009e,009f,00ff,1301,1302,1303,c023,c024,c027,c028,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_a2fb288ce784_958d92f00bb5 |
| JA4_ro (sample) | t13d1812h1_1302,1303,1301,c02c,c030,c02b,c02f,cca9,cca8,c024,c028,c023,c027,009f,009e,006b,0067,00ff_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)
| fingerprint | co-occurrences |
|---|---|
ge11nn040000_e1d2031bdfea_000000000000_000000000000 | 49 |
ge11nn050000_3658ef221638_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.21.4, wget 1.21.3, wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog. | 15 |
po20nn07*000_8db2b212706a_000000000000_000000000000 | 14 |
ge20nn06*000_b74359a06b81_000000000000_000000000000 | 14 |
ge11nn05enus_16a7191cb35b_000000000000_000000000000 | 10 |
ge11nn040000_88d30a62b7ad_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog. | 9 |
ge11nn050000_be0d0b335e46_000000000000_000000000000 | 9 |
ge11nn060000_a284f3d85baf_000000000000_000000000000 | 5 |
ge20nn060000_9606e9a08f5b_000000000000_000000000000 | 5 |
ge11nn080000_71a0fe9f4364_000000000000_000000000000 | 4 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
1:4096;2:0;4:65535;5:16384;3:100;6:65536|16777216|0|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog. | 36 |
TCP SYN (p0f)
TCP SYN (JA4T)
User-Agent
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 82 |
NL · Netherlands | 30 |
IT · Italy | 16 |
IE · Ireland | 10 |
CN · China | 6 |
SG · Singapore | 4 |
DE · Germany | 3 |
GB · United Kingdom | 3 |
FR · France | 3 |
CA · Canada | 2 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS8075 · Microsoft Corporation | 36 |
AS11426 · Charter Communications Inc | 23 |
AS21859 · Zenlayer Inc | 18 |
AS16509 · Amazon.com, Inc. | 12 |
AS211680 · NSEC - Sistemas Informaticos, S.A. | 12 |
AS396982 · Google LLC | 8 |
AS197170 · TechTies Inc. | 7 |
AS206264 · Amarutu Technology Ltd | 7 |
AS213790 · Limited Network LTD | 4 |
AS4134 · CHINANET BACKBONE | 4 |