User-Agent

Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)

first seen 2026-07-03 10:44 · last seen 2026-09-12 05:24 · JSON

Bot verification

This User-Agent declares a bot or user-triggered fetcher. Each connection's IP is checked at ingest against the verification channels the operator publishes — its crawler IP ranges and, where documented, forward-confirmed reverse DNS. A claim either channel confirms is identified; one confirmed by neither — outside the ranges, inside a different operator's, or failing the DNS check — is an impersonation signal. Meta publishes its network rather than crawler ranges, so its identified claims are network-confirmed and its unconfirmed misses are unverified claims, not proven spoofs. bot-claim anomalies →

claims	identified	unconfirmed miss	wrong operator	unconfirmed rate
Bingbot	0	27	0	100.0%

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

Browser / client	`Bingbot 2.0`
Device class	`bot`
Declared URL	`http://www.bing.com/bingbot.htm`
Note	`inferred 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)

fingerprint	co-occurrences
`t13d1011h1_61a7ad8aa9b6_3a8073edd8ef`	21
`t13d131000_f57a46bbacb6_e7c285222651` Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.	4
`t13d3113h1_e8f1e7e78f70_ce5650b735ce` Match?Exact match in Thumbprint's published controlled catalog captures: php-guzzle 8.2.0, php-guzzle 8.1.0, php-guzzle 8.0.2, +2 more.The fingerprint page shows the full measured match list. More on the catalog.	1
`t13d141000_cbb2034c60b8_e7c285222651` Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.22.12.The fingerprint page shows the full measured match list. More on the catalog.	1

HTTP request (JA4H)

fingerprint	co-occurrences
`ge11nr040000_8b1ed2202073_000000000000_000000000000`	11
`ge11nn040000_8b1ed2202073_000000000000_000000000000`	10
`ge11nr030000_cd680697de12_000000000000_000000000000`	3
`ge11nn030000_cd680697de12_000000000000_000000000000` Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.5, powershell 7.6.4, go-net/http 1.27.0, +7 more.The fingerprint page shows the full measured match list. More on the catalog.	2
`ge11nn040000_e1d2031bdfea_000000000000_000000000000`	1

TCP SYN (p0f)

fingerprint	co-occurrences
`4:54+10:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	6
`4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	5
`4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	3
`4:52+12:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	2
`4:54+10:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:0`	2
`4:57+7:0:1436:mss*45,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	2
`4:47+17:0:1460:mss*44,7:mss,nop,nop,sok,nop,ws:df,id+:0`	1
`4:55+9:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	1

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_7`	20
`42340_2-4-8-1-3_1460_10`	4
`64620_2-4-8-1-3_1436_7`	2
`64240_2-1-1-4-1-3_1460_7`	1

Country

fingerprint	co-occurrences
`US` · United States	16
`NL` · Netherlands	8
`CH` · Switzerland	2
`DE` · Germany	1

Network (ASN)

fingerprint	co-occurrences
`AS41608` · NextGenWebs, S.L.	8
`AS36352` · HostPapa	6
`AS399804` · Hostodo	5
`AS14061` · DigitalOcean, LLC	2
`AS53667` · FranTech Solutions	2
`AS400529` · Infraly, LLC	2
`AS24940` · Hetzner Online GmbH	1
`AS46475` · Limestone Networks, Inc.	1