TCP SYN (p0f)

4:109+19:0:1412:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-06-19 14:48 · last seen 2026-09-10 03:08 · JSON

Last 7 days (1 observations)

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 TTL109+19
Options length0
MSS1412
Window size65535
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
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
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog.10
t13d2913h1_723694b0fccc_5671b5df50297
t13d1515h1_8daaf6152771_0a20fe35d3a52
t13d1812h1_85036bcba153_d41ae481755e1
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, +24 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d1515h1_8daaf6152771_de4a06bb82e31

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn14enus_4a2973d235de_000000000000_0000000000002
ge20nr16zhsg_94fdc06e0694_000000000000_0000000000002
ge11nn11ensg_835281d8e5d9_000000000000_0000000000002
ge20nn13enus_0c2c1d640f3e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 151.0.7922.137, chrome 151.0.7922.170, chrome 151.0.7922.108, +23 more.The fingerprint page shows the full measured match list. More on the catalog.2
ge20nn150000_e88f16c2c91d_000000000000_0000000000001
ge11nn040000_c3abebcf3d28_000000000000_0000000000001
ge11nn11thth_b350a6a7c155_000000000000_0000000000001
ge20nr16thth_94fdc06e0694_000000000000_0000000000001
ge20nn16thth_94fdc06e0694_000000000000_0000000000001
ge11nr11ensg_835281d8e5d9_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
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, +43 more.The fingerprint page shows the full measured match list. More on the catalog.11

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1412_820

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 14; Pixel 9 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.363
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.362
Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.12
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.7 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Linux; Android 13; SM-S911B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362
Python/3.14 aiohttp/3.13.51
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/147.0.7727.15 Safari/537.361
Mozilla/5.0 (iPad; CPU OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.11
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
SG · Singapore8
SA · Saudi Arabia4
TH · Thailand3
BR · Brazil2
GB · United Kingdom1
ID · Indonesia1
UA · Ukraine1
CO · Colombia1
EC · Ecuador1

Network (ASN)

fingerprintco-occurrences
AS9506 · Singtel Fibre Broadband6
AS45758 · Triple T Broadband Public Company Limited3
AS48695 · Etihad GO Company For communications2
AS25019 · Saudi Telecom Company JSC2
AS55430 · Starhub Ltd2
AS13188 · CONTENT DELIVERY NETWORK LTD1
AS7738 · V tal1
AS27947 · Telconet S.A1
AS262191 · LIBERTY NETWORKS DE COLOMBIA S.A.S1
AS17451 · BIZNET NETWORKS1