HTTP/2 frames (Akamai)

1:65536;2:0;4:131072;5:16384|12517377|3:0:0:22|m,p,a,s

first seen 2026-06-11 00:36 · last seen 2026-11-01 16:39 · JSON

Last 7 days (44 observations)

Distinct clients per day (last 30 days, peak 11/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": 131072, "5": 16384}
WINDOW_UPDATE12517377
PRIORITY frames3:0:0:22
Pseudo-header orderm,p,a,s

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
t13d1617h2_86a278354501_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 152.0.3, +10 more.The fingerprint page shows the full measured match list. More on the catalog.170
t13d1715h2_5b57614c22b0_a54fffd0eb6181
t13d1517h2_8daaf6152771_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 155.0.1, firefox 154.0, firefox 156.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.80
t13d1717h2_5b57614c22b0_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 148.0.2, firefox 144.0.2, firefox 142.0.1, +6 more.The fingerprint page shows the full measured match list. More on the catalog.73
t13d1616h2_86a278354501_0c27189014cf Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 152.0.6, +10 more.The fingerprint page shows the full measured match list. More on the catalog.64
t13d1516h2_8daaf6152771_0c27189014cf Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 155.0.1, firefox 155.0, +6 more.The fingerprint page shows the full measured match list. More on the catalog.43
t13d1714h2_5b57614c22b0_53a6d0ab1c4223
t13d1614h2_86a278354501_53a6d0ab1c4220
t13d1617h2_86a278354501_3e9721a6796e18
t13d1515h2_8daaf6152771_a54fffd0eb6118

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr10enus_b3034183f430_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 155.0.1, +28 more.The fingerprint page shows the full measured match list. More on the catalog.176
ge20nr11enus_187a9385d229_000000000000_000000000000142
ge20nr12enus_979a40433f82_000000000000_00000000000064
ge20nr12enus_a4e537ffe33a_000000000000_00000000000044
ge20nr10ruru_b3034183f430_000000000000_00000000000028
ge20nr12enus_1204b4dfdccd_000000000000_00000000000018
ge20nr11enus_1d88e8a431b9_000000000000_00000000000017
ge20nr11enus_dff93ddcf3c8_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 132.0, firefox 151.0.3, firefox 151.0.4, +1 more.The fingerprint page shows the full measured match list. More on the catalog.13
ge20nr10zhcn_b3034183f430_000000000000_00000000000012
ge20nr12de00_979a40433f82_000000000000_00000000000012

TCP SYN (p0f)

fingerprintco-occurrences
4:55+9:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:024
4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:017
4:54+10:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:016
4:115+13:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:014
4:114+14:0:1412:65535,8:mss,nop,ws,nop,nop,sok:df,id+:012
4:47+17:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:010
4:48+16:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:010
4:51+13:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:010
4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:09
4:50+14:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:08

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_1067
64240_2-4-8-1-3_1460_759
65535_2-1-3-1-1-8-4-0-0_1460_623
64800_2-4-8-1-3_1440_1021
64800_2-4-8-1-3_1440_719
64860_2-4-8-1-3_1380_1019
64240_2-1-3-1-1-4_1460_818
65535_2-1-3-1-1-4_1460_815
65535_2-1-3-1-1-8-4-0-0_1440_614
59640_2-1-3-4-0-0_1420_814

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.087
Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.083
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.082
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.038
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:153.0) Gecko/20100101 Firefox/153.035
Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.031
Mozilla/5.0 (X11; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.028
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:156.0) Gecko/20100101 Firefox/156.020
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:153.0) Gecko/20100101 Firefox/153.017
Mozilla/5.0 (X11; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.015

Country

fingerprintco-occurrences
US · United States123
DE · Germany68
AU · Australia54
NL · Netherlands44
FR · France42
SE · Sweden32
CA · Canada31
CH · Switzerland25
RU · Russia22
ID · Indonesia18

Network (ASN)

fingerprintco-occurrences
AS38195 · Superloop39
AS212238 · Datacamp Limited17
AS8881 · 1&1 Versatel GmbH16
AS15557 · Societe Francaise Du Radiotelephone - SFR SA16
AS16276 · OVH SAS15
AS215125 · Church of Cyberology14
AS5483 · Magyar Telekom Plc.14
AS60729 · Stiftung Erneuerbare Freiheit13
AS9009 · M247 Europe SRL12
AS7018 · AT&T Enterprises, LLC11

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 158.0.1, firefox 157.0, firefox 157.0.1, +5 more.The fingerprint page shows the full measured match list. More on the catalog.32
11ec,001d,0017,0018,0019,0100,010129
11ec,001d,0017,0018,0019,02028
001d,0017,0018,0019,0100,01012

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
q13d0315h3_55b375c5d22e_dc5437974b47198
q13d0315h3_55b375c5d22e_bb76f32061e341
q13d0314h3_55b375c5d22e_61e396c58b1f24
q13d0313h3_55b375c5d22e_fc7519ff7bc218
q13d0315h3_55b375c5d22e_78345df32b3a11
q13d0314h3_55b375c5d22e_1ecea7cb6ec18