HTTP/2 frames (Akamai)

1:65536;2:0;4:131072;5:16384|12517377|17:0:0:42|m,p,a,s

first seen 2026-06-29 10:32 · last seen 2026-09-03 10:04 · JSON

Distinct clients per day (last 30 days, peak 1/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 frames17:0:0:42
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
t13d1715h2_5b57614c22b0_a54fffd0eb617
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.6
t13d1615h2_86a278354501_a54fffd0eb614
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.2
t13d1517h2_8daaf6152771_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 154.0.1, firefox 155.0.1, +1 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d1714h2_5b57614c22b0_53a6d0ab1c421
t13d0916h2_f91f431d341e_0c27189014cf1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr12enus_a72b71f519fc_000000000000_0000000000008
ge20nr13enus_016d87568c43_000000000000_0000000000003
ge20nr11enus_3901d4197baf_000000000000_0000000000003
ge20nn12enus_a72b71f519fc_000000000000_0000000000003
ge20nn11ruru_3901d4197baf_000000000000_0000000000002
ge20nr12enca_a72b71f519fc_000000000000_0000000000001
ge20nn16enus_c03e27744605_000000000000_0000000000001
ge20nr10ruru_d353d425b0bb_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:50+14:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:55+9:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:54+10:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:56+8:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:51+13:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:01
4:45+19:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:01
4:241+14:0:1420:mss*42,8:mss,nop,ws,sok,eol+1:df,id+:01
4:51+13:0:1460:mss*44,9:mss,sok,ts,nop,ws,?34,nop,nop:df,id+:01
6:48+16:0:1440:32768,10:mss,nop,ws,sok,ts:flow:01
6:242+13:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_108
32768_2-1-3-4-8_1440_102
65228_2-1-3-4-8_1460_72
64240_2-4-8-1-3_1460_71
64320_2-4-8-1-3_1340_101
65535_2-1-3-4-8_1460_61
65535_2-1-3-1-1-8-4-0-0_1440_61
65535_2-1-3-1-1-8-4-0-0_1400_61
64240_2-1-1-4-1-3_1460_91
59640_2-1-3-4-0-0_1420_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.08
Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.05
Mozilla/5.0 (X11; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.02
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.02
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:151.0) Gecko/20100101 Firefox/151.01
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.01
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:152.0) Gecko/20100101 Firefox/152.01
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:153.0) Gecko/20100101 Firefox/153.01

Country

fingerprintco-occurrences
NL · Netherlands5
CA · Canada5
US · United States4
AU · Australia2
RU · Russia2
DE · Germany1
FR · France1
TR · Turkey1
AT · Austria1

Network (ASN)

fingerprintco-occurrences
AS209854 · Cyberzone S.A.3
AS38195 · Superloop2
AS215125 · Church of Cyberology2
AS11878 · tzulo, inc.2
AS41601 · NEO Print Ltd.2
AS60068 · Datacamp Limited1
AS701 · Verizon Business1
AS7018 · AT&T Enterprises, LLC1
AS22616 · ZSCALER, INC.1
AS15557 · Societe Francaise Du Radiotelephone - SFR SA1