User-Agent

Slack-ImgProxy (+https://api.slack.com/robots)

first seen 2026-06-22 18:58 · last seen 2026-07-01 14:59 · JSON

Decomposed attributes

Browser / clientSlack-ImgProxy
Device classbot
Declared URLhttps://api.slack.com/robots
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
t13d1312h2_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.8, go-net/http 1.26.7, +5 more.The fingerprint page shows the full measured match list. More on the catalog.2

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn040000_be74ea4f9dce_000000000000_0000000000001
ge20nn030000_bf75ddd0bb29_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:4194304;5:16384;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.8, go-net/http 1.26.7, +6 more.The fingerprint page shows the full measured match list. More on the catalog.2

TCP SYN (p0f)

fingerprintco-occurrences
4:52+12:0:1460:26883,12:mss,sok,ts,nop,ws:df,id+:01
4:48+16:0:1460:26883,12:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
26883_2-4-8-1-3_1460_121

Country

fingerprintco-occurrences
DE · Germany1
BR · Brazil1

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.2