HTTP/2 frames (Akamai)

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

first seen 2026-06-29 10:32 · last seen 2026-11-01 00:10 · JSON

Last 7 days (6 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

SETTINGS{"1": 65536, "2": 0, "4": 131072, "5": 16384}
WINDOW_UPDATE12517377
PRIORITY frames5:0:0:22
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.53
t13d1715h2_5b57614c22b0_a54fffd0eb6116
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.14
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.13
t13d1617h2_86a278354501_3e9721a6796e6
t13d1617h2_46e7e9700bed_3cbfd9057e0d5
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.3
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.3
t13d0917h2_f91f431d341e_3cbfd9057e0d3
t13d1615h2_86a278354501_a54fffd0eb612

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.51
ge20nr11enus_187a9385d229_000000000000_00000000000030
ge20nr12enus_979a40433f82_000000000000_00000000000015
ge20nr10ruru_b3034183f430_000000000000_00000000000010
ge20nr12de00_979a40433f82_000000000000_0000000000006
ge20nr12enus_1204b4dfdccd_000000000000_0000000000004
ge20nr12en00_979a40433f82_000000000000_0000000000003
ge20nr09enus_bfc092dff6c6_000000000000_0000000000002
ge20nr11enus_1d88e8a431b9_000000000000_0000000000002
ge20nr11enca_1d88e8a431b9_000000000000_0000000000002

TCP SYN (p0f)

fingerprintco-occurrences
4:54+10:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:06
4:114+14:0:1412:65535,8:mss,nop,ws,nop,nop,sok:df,id+:06
4:115+13:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:05
4:50+14:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:04
4:113+15:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:03
4:36+28:0:1460:65228,7:mss,nop,ws,sok,ts:df:03
4:49+15:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:51+13:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:49+15:0:1412:mss*44,10:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_1016
64240_2-4-8-1-3_1460_711
64240_2-1-3-1-1-4_1460_87
64240_2-4-8-1-3_1412_106
65535_2-1-3-1-1-4_1412_86
64240_2-1-3-1-1-4_1440_85
59640_2-1-3-4-0-0_1420_84
65228_2-1-3-4-8_1460_74
64800_2-4-8-1-3_1440_73
64320_2-4-8-1-3_1340_103

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.023
Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.014
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.014
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:153.0) Gecko/20100101 Firefox/153.011
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.010
Mozilla/5.0 (X11; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.08
Mozilla/5.0 (X11; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.06
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:156.0) Gecko/20100101 Firefox/156.06
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:150.0) Gecko/20100101 Firefox/150.0.15
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.04

Country

fingerprintco-occurrences
US · United States27
DE · Germany13
NL · Netherlands8
CA · Canada8
FR · France8
ID · Indonesia8
RU · Russia7
HU · Hungary5
AU · Australia4
CH · Switzerland4

Network (ASN)

fingerprintco-occurrences
AS8881 · 1&1 Versatel GmbH6
AS5483 · Magyar Telekom Plc.5
AS15557 · Societe Francaise Du Radiotelephone - SFR SA4
AS9657 · Melsa-i-net AS4
AS23889 · Mauritius Telecom Ltd4
AS41601 · NEO Print Ltd.4
AS9009 · M247 Europe SRL3
AS212238 · Datacamp Limited3
AS6730 · Sunrise GmbH3
AS214790 · Brainoza OU3

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,0018,0019,0100,01016
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.4
11ec,001d,0017,0018,0019,02021

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_dc5437974b479
q13d0314h3_55b375c5d22e_61e396c58b1f2