TCP SYN (p0f)

4:111+17:0:1412:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0

first seen 2026-07-10 16:56 · last seen 2026-09-15 04:32 · JSON

Last 7 days (1 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 TTL111+17
Options length0
MSS1412
Window sizemss*44
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
t13d2913h1_723694b0fccc_5671b5df502922
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.21
t12d190800_d83cc789557e_7af1ed941c263
t13d1712h1_ab0a1bf427ad_882d495ac3811

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr16bgbg_94fdc06e0694_000000000000_00000000000016
ge11nr11bgbg_835281d8e5d9_000000000000_00000000000010
ge11nr11bgbg_b350a6a7c155_000000000000_0000000000004
ge11nn11bgbg_835281d8e5d9_000000000000_0000000000003
ge20nn16bgbg_94fdc06e0694_000000000000_0000000000003
ge11nr11dede_835281d8e5d9_000000000000_0000000000002
po11nn07enus_7d361e250c48_000000000000_0000000000002
ge11nn11bgbg_b350a6a7c155_000000000000_0000000000001
po11nn07arps_7d361e250c48_000000000000_0000000000001
ge11nr11fifi_835281d8e5d9_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.21

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1412_847

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.363
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.7 Mobile/15E148 Safari/604.13
Mozilla/5.0 (Linux; Android 15; SM-F946B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.363
Mozilla/5.0 (iPad; CPU OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.13
Mozilla/5.0 (iPad; CPU OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.12
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 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.12
Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Linux; Android 14; SM-S921B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362
Mozilla/5.0 (Linux; Android 14; Pixel 9 Pro) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Mobile Safari/537.362

Country

fingerprintco-occurrences
BG · Bulgaria38
DE · Germany2
BR · Brazil2
PE · Peru1
EG · Egypt1
LA · Laos1
PS · Palestinian Territories1
XK · Kosovo1

Network (ASN)

fingerprintco-occurrences
AS8866 · Vivacom Bulgaria EAD38
AS8881 · 1&1 Versatel GmbH2
AS52613 · GIGA MAIS FIBRA TELECOMUNICACOES S.A.2
AS8452 · TE-AS1
AS51407 · Mada Al-Arab General Services Company1
AS265691 · WI-NET TELECOM S.A.C.1
AS33983 · ARTMOTION SH.P.K.1
AS9873 · Lao Telecom Communication, LTC1