TLS ClientHello (JA4)

t13d5212h1_b262b3658495_8e6e362c5eac

first seen 2026-06-12 07:20 · last seen 2026-09-15 23:51 · JSON

Last 7 days (5 observations)

Distinct clients per day (last 30 days, peak 8/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 count52
Extension count12
ALPNh1
Ciphers002f, 0032, 0033, 0035, 0038, 0039, 003c, 003d, 0040, 0067, 006a, 006b, 009c, 009d, 009e, 009f, 00a2, 00a3, 1301, 1302, 1303, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, c050, c051, c052, c053, c056, c057, c05c, c05d, c060, c061, c09c, c09d, c09e, c09f, c0ac, c0ad, cca8, cca9, ccaa
Extensions000a, 000b, 000d, 0016, 0017, 0023, 002b, 002d, 0033, ff01
Signature algorithms0905, 0906, 0904, 0403, 0503, 0603, 0807, 0808, 081a, 081b, 081c, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0301, 0302, 0402, 0502, 0602
JA4_rt13d5212h1_002f,0032,0033,0035,0038,0039,003c,003d,0040,0067,006a,006b,009c,009d,009e,009f,00a2,00a3,1301,1302,1303,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,c050,c051,c052,c053,c056,c057,c05c,c05d,c060,c061,c09c,c09d,c09e,c09f,c0ac,c0ad,cca8,cca9,ccaa_000a,000b,000d,0016,0017,0023,002b,002d,0033,ff01_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0301,0302,0402,0502,0602
JA4_o (sample)t13d5212h1_ca35c0050d43_ec3b10441c8f
JA4_ro (sample)t13d5212h1_1302,1303,1301,c02f,c02b,c030,c02c,009e,c027,0067,c028,006b,00a3,009f,cca9,cca8,ccaa,c0ad,c09f,c05d,c061,c057,c053,00a2,c0ac,c09e,c05c,c060,c056,c052,c024,006a,c023,0040,c00a,c014,0039,0038,c009,c013,0033,0032,009d,c09d,c051,009c,c09c,c050,003d,003c,0035,002f_ff01,0000,000b,000a,0023,0010,0016,0017,000d,002b,002d,0033_0905,0906,0904,0403,0503,0603,0807,0808,081a,081b,081c,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
ge11nn07*000_131b6413da1e_000000000000_00000000000011
ge11nn08*000_2025024c020c_000000000000_00000000000010
ge11nn040000_08e7224bf8c7_000000000000_0000000000009
ge11nn07*000_3022bbb03f71_000000000000_0000000000009
ge11nn07*000_fd87022947da_000000000000_0000000000006
ge11nn07*000_2f91038604b7_000000000000_0000000000006
ge11nn12enus_c0f67fd42004_000000000000_0000000000006
ge20nn05*000_754588453448_000000000000_0000000000006
ge11nn07*000_4ae0f4a72b53_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.19.0, node-fetch 24.21.0, node-fetch 24.20.0, +5 more.The fingerprint page shows the full measured match list. More on the catalog.4
ge11nn07enus_6c5989145a61_000000000000_0000000000004

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:262144|458753|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 26.4.0.The fingerprint page shows the full measured match list. More on the catalog.10

TCP SYN (p0f)

fingerprintco-occurrences
4:42+22:0:1410:mss*46,7:mss,sok,ts,nop,ws:df,id+:011
4:46+18:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:04
4:43+21:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:47+17:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:03
4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:45+19:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:49+15:0:1460:mss*44,9:mss,sok,ts,nop,ws:df,id+:02
4:110+18:0:1360:65535,8:mss,nop,ws,nop,nop,sok:df,id+:02
4:115+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:58+6:0:1420:mss*46,7:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_716
64860_2-4-8-1-3_1410_711
65535_2-1-3-1-1-8-4-0-0_1440_69
65535_2-1-3-1-1-8-4-0-0_1460_67
65535_2-4-8-1-3_1460_95
64800_2-4-8-1-3_1440_74
64240_2-4-8-1-3_1440_74
64240_2-4-8-1-3_1440_104
64240_2-4-8-1-3_1460_93
65535_2-4-8-1-3_1300_93

User-Agent

fingerprintco-occurrences
node11
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.3611
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko; compatible; BuiltWith/1.4; rb.gy/xprgqj) Chrome/124.0.0.0 Safari/537.368
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.368
Mozilla/5.07
deepseek-harness/0.0.1 (+https://github.com/deepseek-ai)4
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.362
Mozilla/5.0 (compatible; feishu-wiki-sync/1.0; +https://github.com/)2
Shipmail OS contact enrichment scanner (manual review only)2

Country

fingerprintco-occurrences
US · United States30
DE · Germany17
AU · Australia8
CN · China6
NL · Netherlands4
SG · Singapore3
CA · Canada3
FR · France3
IN · India3
VN · Vietnam3

Network (ASN)

fingerprintco-occurrences
AS24940 · Hetzner Online GmbH15
AS8075 · Microsoft Corporation8
AS7545 · TPG Telecom Limited8
AS16509 · Amazon.com, Inc.4
AS14618 · Amazon.com, Inc.3
AS7552 · Viettel Group3
AS396982 · Google LLC2
AS16276 · OVH SAS2
AS9808 · China Mobile Communications Group Co., Ltd.2
AS34743 · NASHNET LTD2