User-Agent

curl/7.88.1

first seen 2026-07-31 12:56 · last seen 2026-10-28 07:27 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 70/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 / clientcurl 7.88.1
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
t13d3112h2_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.143
t13d151200_8daaf6152771_ecd0401ec68b2
t12d8007h2_9cedc1f1428b_8587f467d9ea1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn020000_5594a17e7e7e_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.7.1, curl 8.5.0, curl 8.13.0, +11 more.The fingerprint page shows the full measured match list. More on the catalog.143
ge11nn17enus_b9f9c3fe64f4_000000000000_0000000000002
he20nn030000_ba3fe9136eb1_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
3:100;4:33554432;2:0|33488897|0|m,p,s,a Match?Exact match in Thumbprint's published controlled catalog captures: php-curl 7.88.1, curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.144

TCP SYN (p0f)

fingerprintco-occurrences
4:119+9:0:1452:65535,8:mss,nop,ws,nop,nop,sok:df,id+:021
4:119+9:0:1452:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:08
4:55+9:0:1452:mss*44,7:mss,sok,ts,nop,ws:df,id+:07
6:54+10:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:03
6:54+10:0:1440:65535,8:mss,nop,ws,nop,nop,sok:flow:03
4:115+13:0:1452:65535,8:mss,nop,ws,nop,nop,sok:df,id+:03
4:49+15:0:1412:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:44+20:0:1452:mss*44,7:mss,sok,ts,nop,ws:df,id+:03
4:55+9:0:1452:65535,6:mss,sok,ts,nop,ws:df,id+:03
6:54+10:0:1440:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:03

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1452_829
65535_2-1-3-1-1-4_1440_816
64240_2-4-8-1-3_1452_711
64240_2-1-3-1-1-4_1452_811
65535_2-4-8-1-3_1452_68
64240_2-4-8-1-3_1460_76
64240_2-4-8-1-3_1412_76
65535_2-1-3-1-1-4_1432_86
65535_2-1-3-1-1-4_1460_84
64800_2-4-8-1-3_1440_73

Country

fingerprintco-occurrences
DE · Germany116
RU · Russia21
US · United States4
SG · Singapore2
RO · Romania1
SE · Sweden1
CN · China1

Network (ASN)

fingerprintco-occurrences
AS3320 · Deutsche Telekom AG53
AS3209 · Vodafone GmbH43
AS12389 · PJSC Rostelecom20
AS6805 · Telefonica Germany GmbH & Co.OHG9
AS8881 · 1&1 Versatel GmbH4
AS7941 · Internet Archive2
AS209699 · Coaxial Cable LLC2
AS396982 · Google LLC1
AS4134 · CHINANET BACKBONE1
AS8422 · NetCologne Gesellschaft fur Telekommunikation mbH1

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: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog.20
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.22.1, python-httpx 0.28.1, python-requests 2.34.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.1