Network (ASN)

AS18126

first seen 2026-08-09 12:48 · last seen 2026-10-27 18:57 · JSON

Last 7 days (1 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

Network nameChubu Telecommunications Company, Inc.
Domainctc.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)

fingerprintco-occurrences
t13d3013h2_1d37bd780c83_8537cf56674e21
q13d0311h3_55b375c5d22e_f2a83c8e78ae Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, urlsession 6.1.2, urlsession 6.3.3, +5 more.The fingerprint page shows the full measured match list. More on the catalog.2
t13d4312h1_c7886603b240_b26ce05bbdd61
t13d1515h1_8daaf6152771_de4a06bb82e31
t13d2913h1_723694b0fccc_5671b5df50291

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn030000_bf75ddd0bb29_000000000000_00000000000021
ge30nn05ja00_892e8e8cf56b_000000000000_0000000000002
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.1
ge11nn13enus_9db22d02e17a_000000000000_0000000000001
ge11nr11jajp_835281d8e5d9_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-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.21

TCP SYN (p0f)

fingerprintco-occurrences
4:116+12:0:1363:29184,7:mss,sok,ts,nop,ws::07
4:117+11:0:1414:65535,8:mss,nop,ws,nop,nop,sok:df,id+:05
4:117+11:0:1414:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:03
4:115+13:0:1363:29184,7:mss,sok,ts,nop,ws::02
4:116+12:0:1363:mss*29,11:mss,sok,ts,nop,ws::02
4:53+11:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:114+14:0:1414:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:116+12:0:1414:65535,8:mss,nop,ws,nop,nop,sok:df,id+:01
4:53+11:0:1414:65535,6:mss,sok,ts,nop,ws:df,id+:01
4:116+12:0:1414:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
29184_2-4-8-1-3_1363_79
65535_2-1-3-1-1-4_1414_86
64240_2-1-3-1-1-4_1414_85
42340_2-4-8-1-3_1363_112
65535_2-4-8-1-3_1412_61
65535_2-4-8-1-3_1414_61

QUIC transport params

fingerprintco-occurrences
q07_e80dd4933807 Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, urlsession 6.3.3, safari 26.6.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.2

User-Agent

fingerprintco-occurrences
curl/8.14.121
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.4 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.361
Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
JP · Japan26

TLS supported groups

fingerprintco-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.21
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.1