User-Agent

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.3538.77 Safari/537.36

first seen 2026-07-19 23:20 · last seen 2026-07-30 11:15 · JSON

Decomposed attributes

Browser / client	`Chrome 99.0.3538.77`
Operating system	`macOS 10.13.6`
Device class	`desktop`
Note	`inferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above`

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
`t13d4412h1_fd39b124ee10_58ed7828516f`	74

HTTP request (JA4H)

fingerprint	co-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.	74

TCP SYN (p0f)

fingerprint	co-occurrences
`4:47+17:0:1452:mss*4,4:mss,sok,ts,nop,ws:df,id+:0`	3
`4:48+16:0:1452:mss*4,4:mss,sok,ts,nop,ws:df,id+:0`	3
`4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:47+17:0:1440:65535,6:mss,sok,ts,nop,ws:df,id+:0`	2
`4:44+20:0:1400:65535,6:mss,sok,ts,nop,ws:df,id+:0`	2
`4:45+19:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:0`	2
`4:47+17:0:1452:65535,6:mss,sok,ts,nop,ws:df,id+:0`	2
`4:46+18:0:1452:mss*4,4:mss,sok,ts,nop,ws:df,id+:0`	2
`4:45+19:0:1440:65535,6:mss,sok,ts,nop,ws:df,id+:0`	2
`4:49+15:0:1412:65535,6:mss,sok,ts,nop,ws:df,id+:0`	2

TCP SYN (JA4T)

fingerprint	co-occurrences
`5808_2-4-8-1-3_1452_4`	10
`65535_2-4-8-1-3_1460_6`	8
`65535_2-4-8-1-3_1412_6`	8
`65535_2-4-8-1-3_1440_6`	8
`65535_2-4-8-1-3_1400_6`	6
`65535_2-4-8-1-3_1452_6`	4
`64240_2-4-8-1-3_1412_7`	3
`65535_2-4-8-1-3_1400_8`	3
`65535_2-4-8-1-3_1360_6`	3
`64240_2-4-8-1-3_1460_7`	2

Country

fingerprint	co-occurrences
`VN` · Vietnam	12
`BR` · Brazil	7
`AR` · Argentina	6
`BD` · Bangladesh	6
`ZA` · South Africa	4
`PK` · Pakistan	4
`KE` · Kenya	3
`EC` · Ecuador	3
`KZ` · Kazakhstan	2
`CO` · Colombia	2

Network (ASN)

fingerprint	co-occurrences
`AS45899` · VNPT Corp	11
`AS14593` · Space Exploration Technologies Corporation	3
`AS9541` · Cyber Internet Services (Pvt) Ltd.	2
`AS9198` · JSC Kazakhtelecom	1
`AS18403` · FPT Telecom Company	1
`AS7418` · TELEFÓNICA CHILE S.A.	1
`AS36947` · Telecom Algeria	1
`AS24757` · Ethio Telecom	1
`AS262807` · Redfox Telecomunicações Ltda.	1
`AS51407` · Mada Al-Arab General Services Company	1