HTTP/2 frames (Akamai)

2:0;4:4194304;5:16384;6:65856|1073741824|0|a,m,p,s

first seen 2026-07-05 02:22 · last seen 2026-10-24 00:17 · 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{"2": 0, "4": 4194304, "5": 16384, "6": 65856}
WINDOW_UPDATE1073741824
PRIORITY frames0
Pseudo-header ordera,m,p,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
t13d1312h2_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.10, go-net/http 1.26.9, +7 more.The fingerprint page shows the full measured match list. More on the catalog.11
t13d1314h2_f57a46bbacb6_fb48f8b98a2910
t13d1711h2_5b57614c22b0_e7c2852226513

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn04enus_39a3ba4480e8_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: urlsession 6.1.2.The fingerprint page shows the full measured match list. More on the catalog.8
ge20nn04enus_8325a3ce5a12_000000000000_0000000000005
ge20nn04enus_a1e84a948d10_000000000000_0000000000004
ge20cr04ko00_39a3ba4480e8_9399021ba6df_197eb7353f182
ge20nn03enus_dc308f3700d9_000000000000_0000000000001
ge20nr04enus_a1e84a948d10_000000000000_0000000000001
ge20cr04ko00_a1e84a948d10_9399021ba6df_197eb7353f181
ge20nr04enus_8325a3ce5a12_000000000000_0000000000001
ge20nr03enus_dc308f3700d9_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:011
4:53+11:0:1460:62720,7:mss,sok,ts,nop,ws:df,id+:04
4:53+11:0:1460:mss*20,12:mss,sok,ts,nop,ws:df,id+:03
4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:56+8:0:1460:62720,7:mss,sok,ts,nop,ws:df,id+:02
4:54+10:0:1460:62720,7:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_713
62720_2-4-8-1-3_1460_78
29200_2-4-8-1-3_1460_123

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.368
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.365
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.03
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.363
facebookexternalhit/1.1; kakaotalk-scrap/1.0; +https://devtalk.kakao.com/t/scrap/339843
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Safari/605.1.152

Country

fingerprintco-occurrences
NL · Netherlands13
US · United States8
KR · South Korea3

Network (ASN)

fingerprintco-occurrences
AS49453 · Global Layer B.V.13
AS31898 · Oracle Corporation8
AS38099 · Kakao Corp3

TLS supported groups

fingerprintco-occurrences
11ec,11eb,11ed,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.27.3, go-net/http 1.26.10.The fingerprint page shows the full measured match list. More on the catalog.10
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.6
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.2