Network (ASN)

AS9824

first seen 2026-08-30 05:43 · last seen 2026-10-23 22:44 · JSON

Distinct clients per day (last 30 days, peak 28/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

Network name	`JCOM Co., Ltd.`
Domain	`jcom.co.jp`

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
`t13d3013h2_1d37bd780c83_8537cf56674e`	28
`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.	5

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nn030000_bf75ddd0bb29_000000000000_000000000000`	28
`ge20nr16jajp_94fdc06e0694_000000000000_000000000000`	3
`ge20nn16jajp_94fdc06e0694_000000000000_000000000000`	2

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`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.	28
`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.	5

TCP SYN (p0f)

fingerprint	co-occurrences
`4:110+18:0:1363:29184,7:mss,sok,ts,nop,ws::0`	6
`4:111+17:0:1460:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0`	4
`4:109+19:0:1460:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0`	3
`4:108+20:0:1309:mss*44,8:mss,nop,ws,nop,nop,sok:ecn:0`	2
`4:111+17:0:1363:29184,7:mss,sok,ts,nop,ws::0`	2
`4:109+19:0:1363:29184,7:mss,sok,ts,nop,ws::0`	2
`4:108+20:0:1460:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0`	1
`4:112+16:0:1460:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0`	1
`4:111+17:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0`	1
`4:108+20:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`29184_2-4-8-1-3_1363_7`	12
`65535_2-1-3-1-1-4_1460_8`	10
`64240_2-1-3-1-1-4_1460_8`	3
`64240_2-1-3-1-1-4_1309_8`	3
`64240_2-1-3-4-8_1460_8`	1
`64240_2-1-3-1-1-4_1452_8`	1
`8192_2-1-3-1-1-4_1460_2`	1
`64240_2-1-3-1-1-4_1277_8`	1
`29184_2-4-8-1-3_1329_7`	1

User-Agent

fingerprint	co-occurrences
`curl/8.14.1`	28
`Mozilla/5.0 (Linux; Android 13; SM-A546B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.36`	4
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36 Edg/150.0.0.0`	1

Country

fingerprint	co-occurrences
`JP` · Japan	33

TLS supported groups

fingerprint	co-occurrences
`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.	28