TCP SYN (p0f)

4:42+22:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-05 04:13 · last seen 2026-09-27 06:12 · JSON

Decomposed attributes

IP version4
Initial TTL42+22
Options length0
MSS1460
Window sizemss*29
Window scale10
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+
Payload class0

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
t13d1313h2_f57a46bbacb6_9249cab70c7728
t12d610700_8a10cb45a794_4446390ac22420
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
t13d3112h1_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.2.0, php-guzzle 8.1.0, php-guzzle 8.0.2, +12 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_4f6f4aad0c1e_000000000000_00000000000020
ge20nr020000_fb4f949fd323_000000000000_00000000000018
ge20nn020000_fb4f949fd323_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.6, powershell 7.6.8.The fingerprint page shows the full measured match list. More on the catalog.10
ge20nn090000_6aab3d3a70e6_000000000000_0000000000002
ge20nr080000_b3b8e45d0c4c_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

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p28
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.2
1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:220|m,a,s,p Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 152.0.7977.83, +81 more.The fingerprint page shows the full measured match list. More on the catalog.2

TCP SYN (JA4T)

fingerprintco-occurrences
42340_2-4-8-1-3_1460_1053

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Version/7.0 Mobile Safari/537.36 (compatible; Bytespider; https://bytedance.sg.larkoffice.com/docx/K5bxdypulop3IIxrJb0lOjLVgFe)27
Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; https://bytedance.sg.larkoffice.com/docx/K5bxdypulop3IIxrJb0lOjLVgFe)16
Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; spider-feedback@bytedance.com)3
Mozilla/5.0 (Linux; Android 13; PFFM10 Build/TP1A.220905.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 aweme_250000 JsSdk/1.0 NetType/WIFI Channel/31725782a AppName/aweme app_version/25.0.0 ByteLocale/zh-CN Region/CN AppSkin/white AppTheme/light BULLET/1 BytedanceWebview/d8a21c6 TTWebView/08811300484023
python-requests/2.34.21
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.361
Mozilla/5.0 (Linux; Android 5.0) AppleWebKit/537.36 (KHTML, like Gecko) Mobile Safari/537.36 (compatible; Bytespider; https://zhanzhang.toutiao.com/)1
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Bytespider;https://zhanzhang.toutiao.com/1

Country

fingerprintco-occurrences
SG · Singapore46
CN · China6
AT · Austria1

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.46
AS55960 · Beijing Guanghuan Xinwang Digital4
AS23724 · IDC, China Telecommunications Corporation2
AS35369 · LINZ STROM GAS WAERME GmbH fuer Energiedienstleistungen und Telekommunikation1