TCP SYN (p0f)

4:46+18:0:1400:65535,6:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-11 07:17 · last seen 2026-09-15 05:05 · JSON

Last 7 days (7 observations)

Distinct clients per day (last 30 days, peak 35/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 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_58ed7828516f101
t13d1515h1_8daaf6152771_0a20fe35d3a575
t13d1515h1_8daaf6152771_de4a06bb82e373
t13d1516h1_8daaf6152771_1a63afa7c4788
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.4
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.2
t13d2014h2_a09f3c656075_e42f34c56612 Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.5, urlsession 6.1.2, +1 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d3612h1_018971650b2c_e8b3fe21f08b1
t13d1517h2_8daaf6152771_b1ff8ab2d16f1
t13d2812h2_257f3020b3a2_cbb9361b6bf91

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn13enus_9db22d02e17a_000000000000_000000000000105
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.101
ge11nn14enus_4a2973d235de_000000000000_00000000000051
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.4
ge20nr13enus_e2ac93ffb364_000000000000_0000000000002
ge20nn09enus_d96ac90dfa13_000000000000_0000000000001
ge11nn050000_3658ef221638_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: wget 1.21.4, wget 1.21.3, wget 1.25.0.The fingerprint page shows the full measured match list. More on the catalog.1
ge20nr13zhcn_e2ac93ffb364_000000000000_0000000000001
ge20cn06enus_ba5e17eeb7c7_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.7
2:0;3:100;4:2097152;9:1|10420225|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.5, safari 26.4, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1
1:65536;2:0;4:6291456;6:262144|15663105|1:0:0:256|m,a,s,p1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1400_6266

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.3617
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.3615
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.3614
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.3614
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.3613
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.3613
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.3611
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.3611
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.3611
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.369

Country

fingerprintco-occurrences
BR · Brazil63
OM · Oman37
ZA · South Africa27
IQ · Iraq23
TR · Turkey12
BH · Bahrain11
UY · Uruguay10
AR · Argentina9
TN · Tunisia9
CO · Colombia9

Network (ASN)

fingerprintco-occurrences
AS28885 · OmanTel NAP37
AS37105 · RAIN GROUP HOLDINGS (PTY) LTD24
AS6057 · Administracion Nacional de Telecomunicaciones10
AS202651 · Noor Al-Bedaya for General Trading, agricultural investments, Technical production and distribution, internet services, general services, Information technology and software Ltd10
AS5416 · BEYON B.S.C.8
AS327934 · SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)8
AS17072 · TOTAL PLAY TELECOMUNICACIONES, S.A.P.I. DE C.V.6
AS267484 · CABONNET INTERNET LTDA6
AS203214 · Hulum Almustakbal Company for Communication Engineering and Services Ltd5
AS273221 · FIBRAZO S.A.S.5