HTTP/2 frames (Akamai)

3:100;4:1073741824;2:0|1073676289|0|m,p,s,a

first seen 2026-06-11 12:43 · last seen 2026-09-16 18:59 · JSON

Last 7 days (3 observations)

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{"2": 0, "3": 100, "4": 1073741824}
WINDOW_UPDATE1073676289
PRIORITY frames0
Pseudo-header orderm,p,s,a

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
t13d2413h2_df98b6d6dfe4_1b3407e2c93629
t13d3113h2_e8f1e7e78f70_ce5650b735ce18
t13i2412h2_df98b6d6dfe4_1b3407e2c9361

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr04zhcn_21fb322ed28d_000000000000_00000000000018
ge20nr05zhcn_8565061f331f_000000000000_00000000000011
ge20nn030000_ff50983941c1_000000000000_0000000000008
ge20nn04enus_b74aa5121121_000000000000_0000000000004
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.18.0, +9 more.The fingerprint page shows the full measured match list. More on the catalog.3
ge20nn040000_88d30a62b7ad_000000000000_0000000000002
ge20nn05zhcn_8565061f331f_000000000000_0000000000001
ge20nn030000_6dac75bd47eb_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:08
4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:07
4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:05
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:04
4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:04
4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:53+11:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:45+19:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
6:47+17:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:02

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_724
64800_2-4-8-1-3_1440_79

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36 Edg/91.0.864.5410
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.115
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.57.2 (KHTML, like Gecko) Version/5.1.7 Safari/534.57.25
Mozilla/5.0 (Windows NT 10.0; WOW64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.122 Safari/537.364
Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0;4
curl/7.68.03
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.03
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.133 Safari/534.163
Mozilla/5.0 (Windows NT 6.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.13
Mozilla/5.0 (Windows NT 10.0; Win64, x64; Trident/7.0; rv:11.0) like Gecko2

Country

fingerprintco-occurrences
SG · Singapore13
HK · Hong Kong SAR China13
US · United States6
FR · France6
JP · Japan4
DE · Germany3
CN · China2
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS45102 · Alibaba (US) Technology Co., Ltd.30
AS51167 · Contabo GmbH6
AS14061 · DigitalOcean, LLC4
AS24961 · WIIT AG4
AS37963 · Hangzhou Alibaba Advertising Co.,Ltd.2
AS18450 · WebNX, Inc.1
AS12191 · City of Lebanon - Lebanon Utilities1