TCP SYN (p0f)

4:43+21:0:1436:mss*44,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-16 19:13 · last seen 2026-07-26 10:54 · JSON

Decomposed attributes

IP version4
Initial TTL43+21
Options length0
MSS1436
Window sizemss*44
Window scale7
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
t13d4412h1_fd39b124ee10_58ed7828516f9
t13d131100_f57a46bbacb6_e5728521abd42
t13d131100_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.5, go-net/http 1.26.4.The fingerprint page shows the full measured match list. More on the catalog.1
t13d141100_cbb2034c60b8_e5728521abd41

HTTP request (JA4H)

fingerprintco-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.9
ge11nn040000_532a1ee47909_000000000000_0000000000003
ge11nr030000_0db47b7d240d_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1436_712

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.363
Go-http-client/1.11
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_16_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.361
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/88.0.4324.146 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/77.0.3865.90 Safari/537.361
Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.67 Safari/537.361

Country

fingerprintco-occurrences
UZ · Uzbekistan9
NL · Netherlands3
TR · Turkey1

Network (ASN)

fingerprintco-occurrences
AS8193 · Uzbektelekom Joint Stock Company9
AS202412 · Omegatech LTD3
AS209853 · Veridyen Bilisim Teknolojileri Sanayi ve Ticaret Limited Sirketi1