TLS ClientHello (JA4)

t13d311200_1d947a95fc68_7e1102d2036b

first seen 2026-06-30 00:03 · last seen 2026-10-31 16:59 · JSON

Last 7 days (73 observations)

Distinct clients per day (last 30 days, peak 15/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	`31`
Extension count	`12`
ALPN	`00`
Ciphers	`0032, 0033, 0038, 0039, 0040, 0067, 006a, 006b, 009e, 009f, 00a2, 00a3, 00ff, 1301, 1302, 1303, c009, c00a, c013, c014, c023, c024, c027, c028, c02b, c02c, c02f, c030, cca8, cca9, ccaa`
Extensions	`0005, 000a, 000b, 000d, 0011, 0017, 0023, 002b, 002d, 0032, 0033`
Signature algorithms	`0403, 0503, 0603, 0807, 0808, 0804, 0805, 0806, 0809, 080a, 080b, 0401, 0501, 0601, 0402, 0303, 0301, 0302`
JA4_r	`t13d311200_0032,0033,0038,0039,0040,0067,006a,006b,009e,009f,00a2,00a3,00ff,1301,1302,1303,c009,c00a,c013,c014,c023,c024,c027,c028,c02b,c02c,c02f,c030,cca8,cca9,ccaa_0005,000a,000b,000d,0011,0017,0023,002b,002d,0032,0033_0403,0503,0603,0807,0808,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302`
JA4_o (sample)	`t13d311200_cdf1781c2960_be214af1adef`
JA4_ro (sample)	`t13d311200_1302,1301,1303,c02c,c02b,cca9,c030,cca8,c02f,009f,ccaa,00a3,009e,00a2,c024,c028,c023,c027,006b,006a,0067,0040,c00a,c014,c009,c013,0039,0038,0033,0032,00ff_0000,0005,000a,000b,0011,0017,0023,000d,002b,002d,0032,0033_0403,0503,0603,0807,0808,0804,0805,0806,0809,080a,080b,0401,0501,0601,0402,0303,0301,0302`

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_487c3246ac94_000000000000_000000000000`	73
`ge10nr040000_1b2a64d23beb_000000000000_000000000000`	14
`ge10nn040000_1b2a64d23beb_000000000000_000000000000`	3
`ge11nn030000_0d34275228c4_000000000000_000000000000`	2
`ge11nn040000_c41ada48459b_000000000000_000000000000`	2
`ge11nn060000_237928583b78_000000000000_000000000000`	2
`ge11nn06enus_829a35c9de3b_000000000000_000000000000`	1
`ge11nn040000_5192a00d9159_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: java-urlconnection 1.8.0_492, java-urlconnection 17.0.19, java-urlconnection 17.0.12, +1 more.The fingerprint page shows the full measured match list. More on the catalog.	1
`he11nn09enus_d49d79236001_000000000000_000000000000`	1
`ge11nn040000_914682d9ca93_000000000000_000000000000`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:52+12:0:1410:mss*30,12:mss,sok,ts,nop,ws:df,id+:0`	72
`4:54+10:0:1436:mss*45,7:mss,sok,ts,nop,ws:df,id+:0`	12
`4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:54+10:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	2
`4:42+22:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	2
`4:57+7:0:1460:65535,2:mss,sok,ts,nop,ws:df,id+:0`	2
`4:42+22:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:53+11:0:1460:mss*20,10:mss,sok,ts,nop,ws:df,id+:0`	1
`4:48+16:0:1360:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:47+17:0:1460:mss*29,9:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`42300_2-4-8-1-3_1410_12`	72
`64620_2-4-8-1-3_1436_7`	13
`64240_2-4-8-1-3_1460_10`	4
`64240_2-4-8-1-3_1460_7`	3
`64240_2-4-8-1-3_1360_7`	2
`65535_2-4-8-1-3_1460_2`	2
`42340_2-4-8-1-3_1460_9`	1
`29200_2-4-8-1-3_1460_10`	1
`64240_2-4-8-1-3_1460_13`	1
`8192_2-4-8-1-3_1460_9`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (compatible; KakaoBot/1.0; +https://cs.kakao.com/helps_html/1073213012)`	73
`Mozilla/5.0 (iPhone; CPU iPhone OS 18_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Mobile/15E148 Safari/604.1`	13
`Mozilla/5.0 (compatible; heritrix/3.14.2-SNAPSHOT-2026-04-13T06:21:22Z +https://www.image-meta.com)`	2
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36`	2
`AstraciaBot/1.0 (+https://astracia.com; affiliate program check)`	2
`ResearchGateBot/1.0 (+https://www.researchgate.net/)`	2
`Mozilla/5.0 (compatible; Landsbokasafn/1.0.0 +https://vefsafn.is/info)`	2
`Protopage/3.0 (http://www.protopage.com)`	1
`Java/21.0.11`	1
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 (compatible; HubSpot DataHub; +https://www.hubspot.com)`	1

Country

fingerprint	co-occurrences
`KR` · South Korea	73
`DE` · Germany	17
`US` · United States	4
`CA` · Canada	2
`IN` · India	2
`IS` · Iceland	2

Network (ASN)

fingerprint	co-occurrences
`AS152199` · Kakao Corp	26
`AS7625` · Kakao Corp	24
`AS18160` · Kakao Corp	23
`AS3320` · Deutsche Telekom AG	13
`AS24940` · Hetzner Online GmbH	3
`AS396982` · Google LLC	2
`AS19318` · Interserver, Inc	2
`AS56201` · Zoho Corporation Pvt. Ltd,	2
`AS15474` · Rannsokna- og haskolanet Islands hf.	2
`AS6939` · Hurricane Electric LLC	1

TLS supported groups

fingerprint	co-occurrences
`001d,0017,0018,0019,001e,0100,0101,0102,0103,0104` Match?Exact match in Thumbprint's published controlled catalog captures: java-httpclient 17.0.19, java-httpclient 11.0.31.The fingerprint page shows the full measured match list. More on the catalog.	79