HTTP/2 frames (Akamai)

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

first seen 2026-07-01 14:34 · last seen 2026-09-04 13:27 · 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": 131072, "5": 16384}`
WINDOW_UPDATE	`12517377`
PRIORITY frames	`5:0:0:42`
Pseudo-header order	`m,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)

fingerprint	co-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.	18
`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.	9
`t13d1615h2_86a278354501_a54fffd0eb61`	7
`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.	3
`t13d1715h2_5b57614c22b0_a54fffd0eb61`	2
`t13d1716h2_5b57614c22b0_0c27189014cf` 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.	1
`t13d0917h2_f91f431d341e_3cbfd9057e0d`	1
`t13d0916h2_f91f431d341e_0c27189014cf`	1
`t13d1617h2_86a278354501_3e9721a6796e`	1

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nr12enus_a72b71f519fc_000000000000_000000000000`	10
`ge20nr11enus_3901d4197baf_000000000000_000000000000`	9
`ge20nn11ruru_3901d4197baf_000000000000_000000000000`	5
`ge20nr11ruru_3901d4197baf_000000000000_000000000000`	4
`ge20nr13enus_016d87568c43_000000000000_000000000000`	3
`ge20nn12enus_a72b71f519fc_000000000000_000000000000`	2
`ge20nn11zhcn_3901d4197baf_000000000000_000000000000`	1
`ge20nr13itit_016d87568c43_000000000000_000000000000`	1
`ge20nn12enus_6017509bc0fc_000000000000_000000000000`	1
`ge20nn12frbe_5028d631abb0_000000000000_000000000000`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:50+14:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	6
`4:36+28:0:1460:65228,7:mss,nop,ws,sok,ts:df:0`	4
`4:48+16:0:1412:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	3
`4:49+15:0:1412:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	2
`4:241+14:0:1420:mss*42,8:mss,nop,ws,sok,eol+1:df,id+:0`	2
`4:49+15:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	1
`4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:54+10:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_10`	8
`64240_2-4-8-1-3_1412_10`	5
`65228_2-1-3-4-8_1460_7`	5
`64240_2-4-8-1-3_1460_7`	4
`64860_2-4-8-1-3_1380_10`	2
`59640_2-1-3-4-0-0_1420_8`	2
`64800_2-4-8-1-3_1440_7`	1
`64320_2-4-8-1-3_1340_10`	1
`64800_2-4-8-1-3_1440_10`	1
`65535_2-1-3-1-1-4_1460_8`	1

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0`	10
`Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0`	5
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0`	3
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:153.0) Gecko/20100101 Firefox/153.0`	3
`Mozilla/5.0 (X11; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.0`	3
`Mozilla/5.0 (iPad; CPU OS 18_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.1`	3
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0`	2
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:152.0) Gecko/20100101 Firefox/152.0`	2
`Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0`	2
`Mozilla/5.0 (X11; Linux x86_64; rv:146.0) Gecko/20100101 Firefox/146.0`	2

Country

fingerprint	co-occurrences
`RU` · Russia	7
`CA` · Canada	6
`MU` · Mauritius	5
`US` · United States	3
`NL` · Netherlands	3
`CH` · Switzerland	3
`FR` · France	3
`AU` · Australia	2
`GB` · United Kingdom	2
`ID` · Indonesia	2

Network (ASN)

fingerprint	co-occurrences
`AS5645` · TekSavvy Solutions, Inc.	5
`AS23889` · Mauritius Telecom Ltd	5
`AS41601` · NEO Print Ltd.	5
`AS15557` · Societe Francaise Du Radiotelephone - SFR SA	2
`AS51852` · Private Layer INC	1
`AS9009` · M247 Europe SRL	1
`AS212238` · Datacamp Limited	1
`AS53667` · FranTech Solutions	1
`AS136907` · HUAWEI CLOUDS	1
`AS215125` · Church of Cyberology	1