TLS ClientHello (JA4)

t13d3111h2_e8f1e7e78f70_5ac7197df9d2

first seen 2026-06-13 08:49 · last seen 2026-11-01 03:32 · JSON

Last 7 days (2203 observations)

Distinct clients per day (last 30 days, peak 485/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 count31
Extension count11
ALPNh2
Ciphers002f, 0033, 0035, 0039, 003c, 003d, 0067, 006b, 009c, 009d, 009e, 009f, 00ff, 1301, 1302, 1303, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9, ccaa
Extensions000a, 000b, 000d, 0016, 0017, 0023, 002b, 002d, 0033
Signature algorithms0403, 0503, 0603, 0807, 0808, 0809, 080a, 080b, 0804, 0805, 0806, 0401, 0501, 0601, 0303, 0203, 0301, 0201, 0302, 0202, 0402, 0502, 0602
JA4_rt13d3111h2_002f,0033,0035,0039,003c,003d,0067,006b,009c,009d,009e,009f,00ff,1301,1302,1303,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9,ccaa_000a,000b,000d,0016,0017,0023,002b,002d,0033_0403,0503,0603,0807,0808,0809,080a,080b,0804,0805,0806,0401,0501,0601,0303,0203,0301,0201,0302,0202,0402,0502,0602
JA4_o (sample)t13d3111h2_d7c3e2abb617_2ee2426db436
JA4_ro (sample)t13d3111h2_1302,1303,1301,c02c,c030,009f,cca9,cca8,ccaa,c02b,c02f,009e,c024,c028,006b,c023,c027,0067,c00a,c014,0039,c009,c013,0033,009d,009c,003d,003c,0035,002f,00ff_0000,000b,000a,0023,0010,0016,0017,000d,002b,002d,0033_0403,0503,0603,0807,0808,0809,080a,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
ge20nn030000_80b089f68b8e_000000000000_00000000000028120
ge20nn09enus_c5abe4666a67_000000000000_00000000000018082
ge20nn020000_e5a56608905c_000000000000_0000000000005730
ge20nn030000_6dac75bd47eb_000000000000_000000000000 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.5468
ge20nn070000_1903711a2262_000000000000_0000000000001448
ge20nn040000_3dccbaa13f05_000000000000_000000000000365
ge20nn11enus_08fd186dd996_000000000000_000000000000288
ge20nn030000_0d4c7aba53a3_000000000000_00000000000059
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog.22
ge20nr07enus_7226337734ed_000000000000_00000000000020

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:4096;2:0;5:16384;6:131072;3:100;4:65536|26148865|0|m,s,p,a49464
1:4096;2:0;5:16384;6:131072;3:100;4:65536;11105:65535;11106:65535;11107:65535;11108:10;11109:10|26148865|0|m,s,p,a10161

TCP SYN (p0f)

fingerprintco-occurrences
6:56+8:0:1380:65535,8:mss,sok,ts,nop,ws::045781
6:58+6:0:1380:65535,8:mss,sok,ts,nop,ws::06048
6:46+18:0:1380:65535,8:mss,sok,ts,nop,ws::01872
6:55+9:0:1380:65535,8:mss,sok,ts,nop,ws::01536
6:53+11:0:1380:65535,8:mss,sok,ts,nop,ws::01393
6:48+16:0:1380:65535,8:mss,sok,ts,nop,ws::0999
6:49+15:0:1380:65535,8:mss,sok,ts,nop,ws::0788
6:47+17:0:1380:65535,8:mss,sok,ts,nop,ws::0332
6:54+10:0:1380:65535,8:mss,sok,ts,nop,ws::0176
6:247+8:0:1380:65535,8:mss,sok,ts,nop,ws::0127

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1380_859608

User-Agent

fingerprintco-occurrences
facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)23155
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36 (compatible; meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))19564
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36 (compatible; meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))11363
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36 (compatible; meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))2932
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36 Edg/145.0.0.0 (compatible; meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))1800
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 Edg/144.0.0.0 (compatible; meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))302
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:147.0) Gecko/20100101 Firefox/147.0 (compatible; meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))121
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0 (compatible; meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))69
Mozilla/5.0 (X11; Linux x86_64; rv:147.0) Gecko/20100101 Firefox/147.0 (compatible; meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))63
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36 Edg/145.0.0.0 (compatible; meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler))55

Country

fingerprintco-occurrences
US · United States54404
DE · Germany1759
SG · Singapore1750
GB · United Kingdom1712

Network (ASN)

fingerprintco-occurrences
AS32934 · Facebook, Inc.59625

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,00185933