HTTP/2 frames (Akamai)

1:65536;2:0;4:131072;5:16384|12517377|11:0:0:42|m,p,a,s

first seen 2026-06-30 02:50 · last seen 2026-09-03 10:01 · JSON

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_UPDATE	`12517377`
PRIORITY frames	`11:0:0:42`
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.	20
`t13d1715h2_5b57614c22b0_a54fffd0eb61`	9
`t13d1615h2_86a278354501_a54fffd0eb61`	5
`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.	3
`t13d1617h2_86a278354501_3e9721a6796e`	3
`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.	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.	2
`t13d1714h2_5b57614c22b0_53a6d0ab1c42`	2
`t13d0916h2_f91f431d341e_0c27189014cf`	1
`t13d0917h2_f91f431d341e_3cbfd9057e0d`	1

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nr12enus_a72b71f519fc_000000000000_000000000000`	13
`ge20nr11enus_3901d4197baf_000000000000_000000000000`	8
`ge20nn11enus_3901d4197baf_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 153.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.	7
`ge20nr13enus_016d87568c43_000000000000_000000000000`	4
`ge20nr11ruru_3901d4197baf_000000000000_000000000000`	3
`ge20nn11ruru_3901d4197baf_000000000000_000000000000`	3
`ge20nr13itit_016d87568c43_000000000000_000000000000`	2
`ge20nn12ruru_5028d631abb0_000000000000_000000000000`	1
`ge20nn10enus_d353d425b0bb_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: firefox 152.0.1.The fingerprint page shows the full measured match list. More on the catalog.	1
`ge20nn12enus_a72b71f519fc_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`	4
`4:113+15:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0`	3
`4:241+14:0:1420:mss*42,8:mss,nop,ws,sok,eol+1:df,id+:0`	2
`4:47+17:0:1440:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	2
`6:44+20:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:0`	2
`4:48+16:0:1452:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:0`	2
`4:117+11:0:1334:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:0`	2
`4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:56+8:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1
`4:49+15:0:1460: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`	7
`64240_2-4-8-1-3_1460_7`	5
`65535_2-1-3-1-1-8-4-0-0_1452_6`	4
`64240_2-1-3-1-1-4_1440_8`	3
`64240_2-4-8-1-3_1440_10`	3
`64800_2-4-8-1-3_1440_7`	2
`64860_2-4-8-1-3_1380_10`	2
`32768_2-1-3-4-8_1440_10`	2
`59640_2-1-3-4-0-0_1420_8`	2
`64240_2-1-3-1-1-4_1334_8`	2

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0`	8
`Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.0`	7
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0`	5
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.0`	4
`Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:153.0) Gecko/20100101 Firefox/153.0`	4
`Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.0`	4
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:152.0) Gecko/20100101 Firefox/152.0`	3
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:140.0) Gecko/20100101 Firefox/140.0`	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:153.0) Gecko/20100101 Firefox/153.0`	2

Country

fingerprint	co-occurrences
`NL` · Netherlands	7
`US` · United States	6
`CA` · Canada	4
`ID` · Indonesia	4
`VN` · Vietnam	4
`CH` · Switzerland	3
`FR` · France	3
`RU` · Russia	3
`AU` · Australia	2
`SE` · Sweden	2

Network (ASN)

fingerprint	co-occurrences
`AS215125` · Church of Cyberology	3
`AS9657` · Melsa-i-net AS	3
`AS24088` · Hanoi Telecom Joint Stock Company - HCMC Branch	3
`AS701` · Verizon Business	2
`AS53667` · FranTech Solutions	2
`AS36903` · Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	2
`AS15557` · Societe Francaise Du Radiotelephone - SFR SA	2
`AS1267` · WIND TRE S.P.A.	2
`AS215730` · H2NEXUS LTD	2
`AS50673` · Serverius	2