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Akin HTTP request fingerprint

b11cun081_00340017_33f6a91a_x7585

Seen 2026-08-10 to 2026-09-25 across the retained window.

Open in lookup → Addresses as a feed

The feed is a URL your firewall, MISP or SIEM polls; it needs a free account so it can be revoked. Or watch the top network: AS8075 sends an email when it next hits a sensor.

5

Source IPs

1

Networks

1

Countries

2

Ports hit

6

Events

5

IPs / network

Top networks

AS8075 Microsoft Corporation5 IPs6

Countries

US 5

Ports targeted

80/tcp 3502/tcp 3

What it requests

GET/robots.txt6

User agents claimed

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/116.0.1938.76 Safari/537.365 IPs6
Source IPCCNetwork Last seenEvents
207.46.13.230USAS8075 Microsoft Corporation2026-09-252
52.167.144.64USAS8075 Microsoft Corporation2026-09-041
40.77.167.93USAS8075 Microsoft Corporation2026-09-151
52.167.144.65USAS8075 Microsoft Corporation2026-09-251
52.167.144.57USAS8075 Microsoft Corporation2026-09-061

Related fingerprints

Clients whose header set is within two of this one, measured from the tokens themselves.

b11cun070_00340017_8da97ea81 header apart2 IPs2b11cun080_0034001f_ee1daacd2 headers apart762 IPs7.2Kb11cun080_00340037_c3a114252 headers apart6 IPs204b11cun060_00140017_c8769eba2 headers apart18 IPs35b11cun061_00040017_1e93cacd_x75852 headers apart7 IPs19b11cun061_00040017_8e5e346c_x75852 headers apart2 IPs2

About this fingerprint

Akin fingerprints an HTTP client from the request head alone: the protocol version, line endings, body framing, which headers are present, and the grammar of the negotiation header values. The User-Agent string and the request path are deliberately excluded, because both are trivially changed and both were measured varying within a single operator, so a scanner that rotates either keeps one fingerprint. The middle section is a presence bitmap rather than a hash, so two tokens can be compared directly to see how many headers the clients differ by.