User-Agent

python-httpx/0.28.1

first seen 2026-06-12 21:38 · last seen 2026-10-28 09:36 · JSON

Last 7 days (4 observations)

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

Browser / clientpython-httpx 0.28.1
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

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
t13d1812h1_85036bcba153_d41ae481755e53
t13d3112h1_e8f1e7e78f70_d41ae481755e5
t13d1712h1_ab0a1bf427ad_8e6e362c5eac3
t13d1713h1_ab0a1bf427ad_ecd0401ec68b 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.2
t13i1811h1_85036bcba153_d41ae481755e2
t13i1712h1_ab0a1bf427ad_ecd0401ec68b2
t13d3013h1_1d37bd780c83_ecd0401ec68b2
t12d3806h1_10ed599f3404_67a080e8974e1
t13d1813h1_5103eae14fdb_14e66fa6483b1

HTTP request (JA4H)

fingerprintco-occurrences
po20nn07*000_8db2b212706a_000000000000_00000000000023
ge20nn06*000_b74359a06b81_000000000000_00000000000023
ge11nn050000_be0d0b335e46_000000000000_00000000000010
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.4
ge20nn040000_c3abebcf3d28_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.3
po11nn070000_ba9cdd0f42e2_000000000000_0000000000003
po20nn08*000_b01858152300_000000000000_0000000000002
ge20nn07*000_11cdd62b56ea_000000000000_0000000000002
he11nn050000_be0d0b335e46_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
1:4096;2:0;4:65535;5:16384;3:100;6:65536|16777216|0|m,a,s,p 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.57

TCP SYN (p0f)

fingerprintco-occurrences
6:52+12:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:018
6:48+16:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:010
6:47+17:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:06
6:55+9:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:06
6:46+18:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:04
6:53+11:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:04
6:112+16:0:1440:8192,8:mss,nop,ws,nop,nop,sok:ecn:03
4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:45+19:0:1452:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:02

TCP SYN (JA4T)

fingerprintco-occurrences
64800_2-4-8-1-3_1440_751
64240_2-4-8-1-3_1460_73
8192_2-1-3-1-1-4_1440_83
65535_2-1-3-1-1-8-4-0-0_1452_62
65535_2-4-8-1-3_1460_91
64800_2-4-8-1-3_1440_91
64240_2-4-8-1-3_1424_71
65535_2-1-3-1-1-8-4-0-0_1200_61
64952_2-4-8-1-3_1392_71

Country

fingerprintco-occurrences
US · United States34
NL · Netherlands20
SE · Sweden4
RU · Russia3
HK · Hong Kong SAR China2
FR · France2
CN · China2
JP · Japan1
SG · Singapore1
RO · Romania1

Network (ASN)

fingerprintco-occurrences
AS21859 · Zenlayer Inc30
AS211680 · NSEC - Sistemas Informaticos, S.A.20
AS214379 · South Park Networks LLC4
AS14061 · DigitalOcean, LLC3
AS45102 · Alibaba (US) Technology Co., Ltd.2
AS50340 · JSC Selectel2
AS56041 · China Mobile communications corporation2
AS132203 · Tencent Building, Kejizhongyi Avenue1
AS24940 · Hetzner Online GmbH1
AS51167 · Contabo GmbH1

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.3.1, curl 7.88.1, curl 8.13.0, +10 more.The fingerprint page shows the full measured match list. More on the catalog.8