TCP SYN (p0f)

4:42+22:0:1400:65535,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-20 02:18 · last seen 2026-09-05 07:32 · JSON

Distinct clients per day (last 30 days, peak 4/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

IP version4
Initial TTL42+22
Options length0
MSS1400
Window size65535
Window scale8
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_58ed7828516f25
t13d1515h1_8daaf6152771_0a20fe35d3a56
t13d1515h1_8daaf6152771_de4a06bb82e34
t13d1516h1_8daaf6152771_1a63afa7c4781

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.25
ge11nn13enus_9db22d02e17a_000000000000_0000000000006
ge11nn14enus_4a2973d235de_000000000000_0000000000005

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1400_836

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/88.0.4324.182 Safari/537.361
Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.361
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.62 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.82 Safari/537.361
Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.101 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/87.0.4280.101 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.1 Safari/537.361

Country

fingerprintco-occurrences
ZA · South Africa7
UZ · Uzbekistan4
BR · Brazil4
NG · Nigeria3
KE · Kenya2
SY · Syria2
PE · Peru2
JO · Jordan2
IQ · Iraq2
KW · Kuwait1

Network (ASN)

fingerprintco-occurrences
AS12091 · MTN SA4
AS29465 · MTN NIGERIA Communication limited2
AS48832 · Jordanian mobile phone services Ltd2
AS64466 · UNIVERSAL MOBILE SYSTEMS LLC2
AS6147 · INTEGRATEL PERÚ S.A.A.2
AS201767 · Uzbektelekom Joint Stock Company2
AS201550 · Syrian Telecommunication Private Closed Joint Stock Company2
AS36926 · Airtel Networks Kenya Limited2
AS29357 · NATIONAL MOBILE TELECOMMUNICATIONS COMPANY K.S.C.P.1
AS48629 · ICLIK SARL1