TCP SYN (p0f)

4:46+18:0:1460:mss*44,11:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-01 19:31 · last seen 2026-10-29 04:11 · JSON

Last 7 days (3 observations)

Distinct clients per day (last 30 days, peak 3/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
MSS1460
Window sizemss*44
Window scale11
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
t13d311000_8ae6a2f5ac15_5ac7197df9d21720
t13d1512h2_8daaf6152771_cbb9361b6bf93
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
t13d0910h2_40f1f5613b00_5603904660151
t13d0711h2_d3fd8d4d2cdf_9ced094328c91
t13d1410h2_4f2acddecbd5_5603904660151
t13d1411h2_4f2acddecbd5_9ced094328c91
t13d1310h2_1fa16d233a88_5603904660151
t13d1511h2_8daaf6152771_b11bb3600f941
t13d0811h2_57dc29f737fe_9ced094328c91

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_be0d0b335e46_000000000000_0000000000001720
ge20nn04enus_989c7cc05c9b_000000000000_00000000000021
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, +36 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;4:1048576|15663105|1:0:0:256|m,a,s,p21
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, +57 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_111742

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; SemrushBot/7~bl; +http://www.semrush.com/bot.html)1720
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.1 Safari/537.362
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.8 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.3 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.5 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.4 Safari/537.36 Edg/135.0.0.41
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.2 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.3 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.8 Safari/537.36 Edg/135.0.0.81

Country

fingerprintco-occurrences
US · United States1720
NO · Norway22

Network (ASN)

fingerprintco-occurrences
AS209366 · SEMrush CY LTD1720
AS56655 · Gigahost AS22

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,00183