HTTP/2 frames (Akamai)

1:65536;2:0;4:6291456;6:262144|15663105|3:1:1:220|m,a,s,p

first seen 2026-06-29 23:30 · last seen 2026-10-23 20:21 · 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

SETTINGS{"1": 65536, "2": 0, "4": 6291456, "6": 262144}
WINDOW_UPDATE15663105
PRIORITY frames3:1:1:220
Pseudo-header orderm,a,s,p

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
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.24
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, +28 more.The fingerprint page shows the full measured match list. More on the catalog.12
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.7
t13d1517h2_8daaf6152771_cb7bf5808d99 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 152.0.7977.83, chrome 154.0.8037.57, chrome 152.0.7977.64, +24 more.The fingerprint page shows the full measured match list. More on the catalog.6
t13d1518h2_8daaf6152771_4980c97edce02

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr12enus_54b4638ab28b_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 152.0.7977.83, chrome 151.0.7922.137, +58 more.The fingerprint page shows the full measured match list. More on the catalog.16
ge20nr12enus_7f8aecb7bbee_000000000000_0000000000009
ge20nr12engb_54b4638ab28b_000000000000_0000000000006
ge20nr12dede_54b4638ab28b_000000000000_0000000000005
ge20nr12enus_df25ac57a18f_000000000000_0000000000005
ge20nr18enus_847f5aa0f578_000000000000_0000000000001
ge20nr12zhcn_54b4638ab28b_000000000000_0000000000001
ge20nr110000_65ce3e7a57b3_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chromium 151.0.7922.34, chromium 153.0.8010.12, chromium 156.0.8078.4, +13 more.The fingerprint page shows the full measured match list. More on the catalog.1
ge20nr14enus_4600588ae5ca_000000000000_0000000000001
ge20nr14enus_8885f48a1d08_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:48+16:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:05
4:115+13:0:1460:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:05
6:55+9:0:1440:mss*45,10:mss,sok,ts,nop,ws:flow:05
4:114+14:0:1460:mss*44,9:mss,nop,nop,sok,nop,ws:df,id+:04
4:55+9:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:03
4:54+10:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:03
6:232+23:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:ecn,flow:02
4:48+16:0:1460:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:02
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:46+18:0:1440:mss*44,10:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_1011
64240_2-1-1-4-1-3_1460_99
64800_2-4-8-1-3_1440_106
65535_2-1-3-1-1-8-4-0-0_1460_64
65535_2-1-3-1-1-4_1460_82
65535_2-1-3-1-1-8-4-0-0_1440_62
64240_2-4-8-1-3_1460_71
64240_2-1-3-1-1-4_1440_81
64240_2-4-8-1-3_1460_81
42340_2-4-8-1-3_1460_111

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.369
Mozilla/5.0 (Linux; Android 15; sdk_gphone64_x86_64 Build/AE3A.240806.043; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/124.0.6367.219 Mobile Safari/537.365
Mozilla/5.0 (Linux; Android 17; sdk_gphone64_x86_64 Build/CE2A.260420.019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.218 Mobile Safari/537.365
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.364
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.362
Mozilla/5.0 (Linux; Android 16; sdk_gphone64_x86_64 Build/BE2A.250530.026.F3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/133.0.6943.137 Mobile Safari/537.362
Mozilla/5.0 (Linux; Android 10; K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.0.0 Mobile Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Safari/537.362
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.361
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Mobile Safari/537.361

Country

fingerprintco-occurrences
US · United States18
SG · Singapore10
DE · Germany5
AU · Australia4
NL · Netherlands4
CA · Canada2
CN · China2
IN · India1
FI · Finland1
PT · Portugal1

Network (ASN)

fingerprintco-occurrences
AS132892 · Cloudflare, Inc.12
AS213476 · Litlink UAB9
AS38195 · Superloop3
AS6805 · Telefonica Germany GmbH & Co.OHG3
AS8075 · Microsoft Corporation2
AS577 · Bell Canada2
AS50324 · Campus, Hofnetz & Events GmbH2
AS202623 · Cloudflare Inc2
AS4134 · CHINANET BACKBONE1
AS4837 · CHINA UNICOM China169 Backbone1

TLS supported groups

fingerprintco-occurrences
0a0a,11ec,001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 155.0.8059.40, chrome 156.0.8078.73, chromium 156.0.8078.47, +8 more.The fingerprint page shows the full measured match list. More on the catalog.4

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprintlinked observations
q13d0311h3_55b375c5d22e_653d80c3fe9d11
q13d0312h3_55b375c5d22e_178839b6cec14