TCP SYN (p0f)

4:46+18:0:1400:65535,8:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-20 05:28 · last seen 2026-09-05 14:51 · JSON

Distinct clients per day (last 30 days, peak 7/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 TTL46+18
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_58ed7828516f35
t13d1515h1_8daaf6152771_0a20fe35d3a522
t13d1515h1_8daaf6152771_de4a06bb82e312
t13d1516h1_8daaf6152771_1a63afa7c4782

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.35
ge11nn13enus_9db22d02e17a_000000000000_00000000000020
ge11nn14enus_4a2973d235de_000000000000_00000000000016

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1400_871

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.366
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.365
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.364
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.364
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.362

Country

fingerprintco-occurrences
ZA · South Africa19
NG · Nigeria19
BR · Brazil4
BD · Bangladesh4
MX · Mexico3
OM · Oman3
BH · Bahrain3
BG · Bulgaria2
UA · Ukraine2
KH · Cambodia2

Network (ASN)

fingerprintco-occurrences
AS37105 · RAIN GROUP HOLDINGS (PTY) LTD14
AS36873 · Airtel Networks Limited12
AS37148 · Globacom Limited6
AS12091 · MTN SA5
AS45925 · ASN For Teletalk Bangladesh Ltd.4
AS28885 · OmanTel NAP3
AS5416 · BEYON B.S.C.2
AS59257 · CMPak Limited2
AS21497 · PrJSC VF UKRAINE2
AS202651 · Noor Al-Bedaya for General Trading, agricultural investments, Technical production and distribution, internet services, general services, Information technology and software Ltd2