Country

CR

first seen 2026-07-16 20:27 · last seen 2026-10-30 13:18 · JSON

Last 7 days (12 observations)

Distinct clients per day (last 30 days, peak 21/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

Country	`Costa Rica`

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.

TLS ClientHello (JA4)

fingerprint	co-occurrences
`t13d4412h1_fd39b124ee10_58ed7828516f`	95
`t13d4312h1_c7886603b240_b26ce05bbdd6`	79
`t13d1515h1_8daaf6152771_de4a06bb82e3`	63
`t13d1515h1_8daaf6152771_0a20fe35d3a5`	57
`t13d3013h2_1d37bd780c83_8537cf56674e`	8
`t13d1516h1_8daaf6152771_1a63afa7c478`	7
`t13d1516h2_8daaf6152771_d8a2da3f94cd` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog.	6
`t13d1516h2_8daaf6152771_02713d6af862` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog.	6
`t13d1516h2_8daaf6152771_806a8c22fdea` Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 151.0.7922.137, chromium 151.0.7922.34, +28 more.The fingerprint page shows the full measured match list. More on the catalog.	4
`t13d1516h2_8daaf6152771_e5627efa2ab1`	2

HTTP request (JA4H)

fingerprint	co-occurrences
`ge11nn050000_b223a0ebb0b5_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.	174
`ge11nn13enus_9db22d02e17a_000000000000_000000000000`	88
`ge11nn14enus_4a2973d235de_000000000000_000000000000`	39
`ge20nn13enus_0c2c1d640f3e_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: chrome 151.0.7922.137, chrome 151.0.7922.170, chrome 151.0.7922.108, +36 more.The fingerprint page shows the full measured match list. More on the catalog.	13
`ge20nn030000_bf75ddd0bb29_000000000000_000000000000`	8
`ge20nr13enus_e2ac93ffb364_000000000000_000000000000`	3
`ge20nn12enus_60f823d07c94_000000000000_000000000000`	2
`ge20nn140000_02563f2d0fa8_000000000000_000000000000`	1
`ge20nr13zhcn_e2ac93ffb364_000000000000_000000000000`	1
`ge11nr11arso_835281d8e5d9_000000000000_000000000000`	1

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`1:65536;2:0;4:6291456;6:262144\|15663105\|1:1:0:256\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +57 more.The fingerprint page shows the full measured match list. More on the catalog.	18
`3:100;4:65536;2:0\|1048510465\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	8
`1:65536;2:0;3:1000;4:6291456;6:262144\|15663105\|1:1:0:256\|m,a,s,p`	2

TCP SYN (p0f)

fingerprint	co-occurrences
`4:46+18:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	29
`4:48+16:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:0`	24
`4:44+20:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	20
`4:246+9:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:0`	20
`4:49+15:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:0`	17
`4:45+19:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	17
`4:48+16:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	13
`4:47+17:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	12
`4:43+21:0:1460:65535,6:mss,sok,ts,nop,ws:df,id+:0`	10
`4:52+12:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:0`	9

TCP SYN (JA4T)

fingerprint	co-occurrences
`65535_2-4-8-1-3_1412_6`	118
`65535_2-4-8-1-3_1460_6`	110
`65535_2-4-8-1-3_1452_6`	23
`65535_2-4-8-1-3_1440_6`	14
`65535_2-4-8-1-3_1400_6`	10
`64240_2-4-8-1-3_1412_7`	8
`64240_2-4-8-1-3_1460_7`	6
`65535_2-4-8-1-3_1412_8`	6
`65535_2-4-8-1-3_1436_6`	4
`65535_2-4-8-1-3_1460_8`	3

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36`	22
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36`	21
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36`	20
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36`	18
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36`	15
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36`	15
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36`	13
`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`	13
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36`	12
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36`	11

Network (ASN)

fingerprint	co-occurrences
`AS52228` · Cable Tica	68
`AS52263` · Telecable Economico S.A.	59
`AS11830` · Instituto Costarricense de Electricidad y Telecom.	49
`AS14754` · TELECOMUNICACIONES DE GUATEMALA, SOCIEDAD ANONIMA	44
`AS262197` · MILLICOM CABLE COSTA RICA S.A.	41
`AS262145` · Cooperativa de Electrificación Rural de San Carlos R.L. (Coopelesca R.L.)	12
`AS14593` · Space Exploration Technologies Corporation	9
`AS52468` · UFINET PANAMA S.A.	9
`AS266853` · Comunicaciones Metropolitanas METROCOM, S.A.	9
`AS263762` · COOPERATIVA DE ELECTRIFICACIÓN RURAL DE GUANACASTE R.L.	5

TLS supported groups

fingerprint	co-occurrences
`001d,0017,001e,0019,0018,0100,0101,0102,0103,0104` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog.	68
`11ec,001d,0017,001e,0018,0019,0100,0101` Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.22.1, python-httpx 0.28.1, python-requests 2.34.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.	8
`0a0a,001d,0017,0018`	7
`0a0a,11ec,001d,0017,0018` Match?Exact match in Thumbprint's published controlled catalog captures: chrome 155.0.8059.40, chrome 156.0.8078.73, chromium 156.0.8078.47, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	5
`0a0a,6399,001d,0017,0018`	3
`11ec,001d,0017,0018,0019` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 157.0.1, firefox-esr 153.5.1esr, firefox 158.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	1