TCP SYN (p0f)

4:46+18:0:1440:65535,6:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-05 10:26 · last seen 2026-09-15 06:43 · JSON

Last 7 days (10 observations)

Distinct clients per day (last 30 days, peak 68/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
MSS1440
Window size65535
Window scale6
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_58ed7828516f434
t13d1515h1_8daaf6152771_de4a06bb82e3172
t13d1515h1_8daaf6152771_0a20fe35d3a5155
t13d1516h1_8daaf6152771_1a63afa7c47826
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.10
t13d1516h2_8daaf6152771_02713d6af862 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 134.0.6998.35, chromium 133.0.6943.16.The fingerprint page shows the full measured match list. More on the catalog.7
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.3
t13d1517h2_8daaf6152771_b1ff8ab2d16f2
t13d491200_bd868743f55c_7c76daad20ec1
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

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.434
ge11nn13enus_9db22d02e17a_000000000000_000000000000245
ge11nn14enus_4a2973d235de_000000000000_000000000000108
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.12
ge20nr13enus_e2ac93ffb364_000000000000_0000000000005
ge20nr13zhcn_e2ac93ffb364_000000000000_0000000000004
ge11nn040000_c41ada48459b_000000000000_0000000000001
ge20nn15enus_28e542058e45_000000000000_0000000000001
ge11nr16dede_c1ab42bf1153_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.22

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1440_6811

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.3634
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.3631
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.3631
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.3629
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.3629
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.3628
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.3628
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.3626
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.3626
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.3624

Country

fingerprintco-occurrences
BD · Bangladesh242
BR · Brazil231
AR · Argentina181
CL · Chile58
UA · Ukraine11
ZA · South Africa11
CO · Colombia10
VE · Venezuela8
PK · Pakistan7
IQ · Iraq7

Network (ASN)

fingerprintco-occurrences
AS22927 · Telefonica de Argentina176
AS7418 · TELEFÓNICA CHILE S.A.56
AS27699 · TELEFÔNICA BRASIL S.A22
AS134732 · Dot Internet22
AS26599 · TELEFÔNICA BRASIL S.A13
AS58689 · ICC Communication11
AS23956 · AmberIT Limited11
AS18881 · TELEFÔNICA BRASIL S.A10
AS134562 · DISCOVERY INTERNET7
AS3816 · COLOMBIA TELECOMUNICACIONES S.A. ESP BIC6