TCP SYN (p0f)

4:121+7:0:1412:65535,8:mss,sok,ts,nop,ws::0

first seen 2026-06-25 11:36 · last seen 2026-11-01 16:36 · JSON

Last 7 days (130 observations)

Distinct clients per day (last 30 days, peak 18/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 TTL121+7
Options length0
MSS1412
Window size65535
Window scale8
Options layoutmss,sok,ts,nop,ws
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
t13d181300_e8a523a41297_43ade6aba3df1550
t13d1712h2_5b57614c22b0_ef7df7f74e48256
t13d181200_e8a523a41297_6a3d802a713996
t13d1711h2_5b57614c22b0_78e6aca7449b12

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_c727097c2f59_000000000000_000000000000745
ge11nn080000_6b4f92f3c7df_000000000000_000000000000422
ge11nn070000_5583da70a3c4_000000000000_000000000000236
ge11nn060000_1726a8486418_000000000000_000000000000128
ge20nr080000_eac7452ad7da_000000000000_000000000000121
ge20nn070000_fad2baeaef05_000000000000_00000000000062
ge11nn060000_a664e4fabf5b_000000000000_00000000000038
ge20nr070000_fad2baeaef05_000000000000_00000000000035
ge11nn040000_51be388b7c20_000000000000_00000000000020
ge20nr090000_65d4d215624f_000000000000_00000000000013

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;1:4096;8:0;3:1024;4:33554432|25100289|0|m,s,p,a268

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1412_81863

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)760
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/153.0.8010.52 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)253
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36 Chrome-Lighthouse135
Mozilla/5.0 (Linux; Android 11; moto g power (2022)) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Mobile Safari/537.36 Chrome-Lighthouse133
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.186 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)115
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.7871.128 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)92
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.7922.173 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)78
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.84 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)53
Google-Lens44
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.7922.137 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)41

Country

fingerprintco-occurrences
US · United States1777
TW · Taiwan37
NL · Netherlands33
BE · Belgium33
FI · Finland21
SG · Singapore9
IE · Ireland4

Network (ASN)

fingerprintco-occurrences
AS15169 · Google LLC1895
AS396982 · Google LLC19

TLS supported groups

fingerprintco-occurrences
0a0a,001d,0017,0018350
001735