TCP SYN (p0f)

4:110+18:0:1400:65535,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-08-17 21:51 · last seen 2026-08-30 15:34 · JSON

Distinct clients per day (last 30 days, peak 2/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 TTL110+18
Options length0
MSS1400
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
t13d2014h2_a09f3c656075_14788d8d241b6
t13d1516h2_8daaf6152771_e5627efa2ab13
t13d2913h1_723694b0fccc_5671b5df50292
t13d1715h2_5b57614c22b0_a54fffd0eb612
t13d591000_a33745022dd6_1f22a2ca17c42
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
t13d1516h3_8daaf6152771_d8a2da3f94cd1
t13d1513h2_8daaf6152771_eca864cca44a1
t13d1714h2_5b57614c22b0_3dd24b5ebec41
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.1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn030000_6dac75bd47eb_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog.16
ge11nn050000_a72e37bb2523_000000000000_0000000000002
ge11nr11fifi_835281d8e5d9_000000000000_0000000000001
ge11nr11fifi_b350a6a7c155_000000000000_0000000000001
ge20nr16zhsg_94fdc06e0694_000000000000_0000000000001
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.1

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.5
4:4194304;3:100|10485760|1:1:0:256|m,s,p,a2
2:0;3:100;4:2097152;8:1;9:1|10420225|1:1:0:256|m,s,a,p2
1:65536;2:0;4:131072;5:16384|12517377|1:1:0:256|m,p,a,s2
1:65536;2:0;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p2
2:0;4:2097152;3:100|10485760|1:1:0:256|m,s,p,a1
4:2097152;3:100|10485760|1:1:0:256|m,s,p,a1
1:65536;3:1000;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p1
4:16777216|16711681|0|m,p,a,s1
1:65536;2:0;4:131072;5:16384;9:1|12517377|1:1:0:256|m,p,a,s1

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1400_822

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.3618
Mozilla/5.0 (iPhone; CPU iPhone OS 17_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.12
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
Mozilla/5.0 (Linux; Android 13; SM-S911B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.361

Country

fingerprintco-occurrences
EG · Egypt18
MX · Mexico3
BH · Bahrain1

Network (ASN)

fingerprintco-occurrences
AS24863 · Link Egypt (Link.NET)18
AS13999 · Mega Cable, S.A. de C.V.3
AS5416 · BEYON B.S.C.1