BGP prefixPrefix
The block of addresses this IP is announced in to the rest of the internet. RPKI valid means the block's owner
signed off on the network announcing it.
RPKI valid
150.171.0.0/16
Seen by 3,208 peers
Latency
Round trip for an HTTPS request from your browser to the site and back, including the server's reply time.
Live
— ms
Measuring from your browser…
At a glance
Route
From Columbus on Anthropic, PBC
YouColumbus
microsoft.comUnited States · — ms
Finding a probe near you…
Networks crossed
Each network is an autonomous system (AS). Your traffic is handed from one to the next where they connect, following
the routes BGP advertises.
AS16509Anthropic, PBC
AS8075Microsoft
#HostNetworkLocationRound trip
AS
⋮
Waiting for a reply——*
Tracing from a probe near you with Globalping. Hop locations that its round-trip times rule out are left off the map.
DNS records
69 records · name servers at Azure DNS
TypeNameValueTTL
Amicrosoft.com150.171.109.7718 min
AAAAmicrosoft.com2603:1061:14:47::119 min
NSmicrosoft.comns1-39.azure-dns.com2 days
NSmicrosoft.comns2-39.azure-dns.net2 days
NSmicrosoft.comns3-39.azure-dns.org2 days
NSmicrosoft.comns4-39.azure-dns.info2 days
MXmicrosoft.com10 microsoft-com.mail.protection.outlook.com52 min
TXTmicrosoft.com"d365mktkey=3uc1cf82cpv750lzk70v9bvf2"58 min
TXTmicrosoft.com"facebook-domain-verification=fwzwhbbzwmg5fzgotc2go51olc3566"58 min
TXTmicrosoft.com"google-site-verification=pjPOauSPcrfXOZS9jnPPa5axowcHGCDAl1_86dCqFpk"58 min
TXTmicrosoft.com"fg2t0gov9424p2tdcuo94goe9j"58 min
TXTmicrosoft.com"t7sebee51jrj7vm932k531hipa"58 min
TXTmicrosoft.com"google-site-verification=M--CVfn_YwsV-2FGbCp_HFaEj23BmT0cTF4l8hXgpvM"58 min
TXTmicrosoft.com"google-site-verification=GfDnTUdATPsK1230J0mXbfsYw-3A9BVMVaKSd4DcKgI"58 min
TXTmicrosoft.com"d365mktkey=SxDf1EZxLvMwx6eEZUxzjFFgHoapF8DvtWEUjwq7ZTwx"58 min
TXTmicrosoft.com"hubspot-developer-verification=OTQ5NGIwYWEtODNmZi00YWE1LTkyNmQtNDhjMDMxY2JjNDAx"58 min
TXTmicrosoft.com"d365mktkey=QDa792dLCZhvaAOOCe2Hz6WTzmTssOp1snABhxWibhMx"58 min
TXTmicrosoft.com"d365mktkey=6358r1b7e13hox60tl1uagv14"58 min
TXTmicrosoft.com"google-site-verification=uFg3wr5PWsK8lV029RoXXBBUW0_E6qf1WEWVHhetkOY"58 min
TXTmicrosoft.com"docusign=d5a3737c-c23c-4bd0-9095-d2ff621f2840"58 min
TXTmicrosoft.com"d365mktkey=j2qHWq9BHdaa3ZXZH8x64daJZxEWsFa0dxDeilxDoYYx"58 min
TXTmicrosoft.com"atlassian-domain-verification=xvoaqRfxSg3PnlVnR4xCSOlKyw1Aln0MMxRiKXnwWroFG7vI76TUC8xYb03MwMXv"58 min
TXTmicrosoft.com"workplace-domain-verification=lK0QDLk73xymCYMKUXNpfKAT8TY5Mx"58 min
TXTmicrosoft.com"google-site-verification=uhh5_jbxpcQgnb-A7gDIjlrr5Ef34lA2t2_BAveYpnk"58 min
TXTmicrosoft.com"MS=ms79629062"58 min
TXTmicrosoft.com"d365mktkey=3l6dste9txazu0Qd2zu4135PUB4E35txLxyzJxjkPbsx"58 min
TXTmicrosoft.com"d365mktkey=wbU64GRacxVEQxwcLSQnx0zisXLYzgUbfvsufIqO9ZUx"58 min
TXTmicrosoft.com"linear-domain-verification=iuq6saifcnbe"58 min
TXTmicrosoft.com"d365mktkey=ZGFU0tlXPekPusNHPo5QQQWpVf0gic0xpuKroNy3NQEx"58 min
TXTmicrosoft.com"d365mktkey=JlXV17lfZjyvWxNje1qiP390ACSKzTxo5mGqZ3V2BmYx"58 min
TXTmicrosoft.com"d365mktkey=PNcDqkW71x8VOUhcE96aGM4l5PYX1gnlRl6ieXUl5eMx"58 min
TXTmicrosoft.com"d365mktkey=Fu49WtSTeClkHtK7S14227RIVpGwwGrzEsO6RVs1I2Ax"58 min
TXTmicrosoft.com"ms-domain-verification=25524f4b-1476-489c-a086-30f4c5016ecc"58 min
TXTmicrosoft.com"ms-domain-verification=1c4e4677-e58f-4117-8d61-e5b2810388c2"58 min
TXTmicrosoft.com"mixpanel-domain-verify=5803bc4c-5bb6-4ce1-8076-753800097373"58 min
TXTmicrosoft.com"sitecore-domain-verification=1d46cb5467624e33a408d14324874088"58 min
TXTmicrosoft.com"ms-domain-verification=478640ad-6524-43d5-86c4-a914804b9e93"58 min
TXTmicrosoft.com"ms-domain-verification=561512fc-b4ba-4ac7-a946-e464c8f49f1b"58 min
TXTmicrosoft.com"_zx2p8gpzv720db2aqmozy4jhwk2nl43"58 min
TXTmicrosoft.com"airtable-verification=79a09e4a8013ff5737798ffb4ea88eee"58 min
TXTmicrosoft.com"1password-site-verification=35ZTURTFFFDC5BW7GFQKRJ77QM"58 min
TXTmicrosoft.com"d365mktkey=8fEQahTresJms7tZGxGFr94T1zDz36oCbUt1LJc99mox"58 min
TXTmicrosoft.com"d365mktkey=heYmJ57sWrwMjCgIG1xRwTREJrQokUIDtBcNfGuxoWQx"58 min
TXTmicrosoft.com"ms-domain-verification=d6545068-89f7-4432-b947-0b137e8a9fe3"58 min
TXTmicrosoft.com"hcp-domain-verification=3ce174a8b9fba88909633ab13eb1d81ce0123454745d66e500052ed84b7248a1"58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=As/XxnDWZFxFwHvRZj+HbG5/ImtAeabLkiOWu1h7wCJQFAR216E9HoYQ5Hy6o7StoQ=="58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=AoHTKEi2W8L2P8cf9CoDicIxYiuttTkwtIeFOqYCewBGoRZiiF+9/92saUkIDERGAA=="58 min
TXTmicrosoft.com"v=spf1 include:_spf-a.microsoft.com include:_spf-b.microsoft.com include:_spf-c.microsoft.com include:_spf-ssg-a.msft.net include:_spf1-meo.microsoft.com -all"58 min
TXTmicrosoft.com"ms-domain-verification=65f91178-9dfb-41cd-929d-08d1a38ed607"58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=Asc8WWov6gsmCCzn4CSrwRuJIh5SqvaitKz/LlTW+SD54lLC52wzcnWhlTI416p2vw=="58 min
TXTmicrosoft.com"liveramp-site-verification=kxcV8fDH_FUNUZQEcAO6lwgim47f_hNLgMP4VG0PF_Q"58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=AqXeTHJ/1FCYeuvJ8dc1B+X3uHaa7m2W0s31vzL4opnrJlSaBdtbWTY8Ti5WiZnu9Q=="58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=An4mJIFLRys9h1EvjX18SJs5p1uEF5MHcs2JJLYPrI48C5Qt9FpaZEM0sQTV4JvNYw=="58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=A/Mf6IKdZzcHfBvpiVz9rkdPTIcCP5IbRDdEkeP3PgXEXF3mNjorahOwaYlMINBF5A=="58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=A8qndBCDJGtFF2+3v/IPIMmM0SaVcrJBoSue7rKob6sUeK7QGeFuWkrtvze3AiqUDA=="58 min
TXTmicrosoft.com"zoom-domain-verification=ZOOM_verify_e97a3d385acb4c47b9b924609a280524"58 min
TXTmicrosoft.com"anthropic-domain-verification-phksss=GZrrKDUR4klRLFCvxyOvqcNGE"58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=Azw9+u4M8RoH+bxJidKAZzGDmsPkzY1N4cO7rB/uC5x1RBoNfMyBlH/ott0lpo4pOQ=="58 min
TXTmicrosoft.com"dobtdihqagnr18hea8uv1h1mvq"58 min
TXTmicrosoft.com"atlassian-domain-verification=Sn5AwyIdVgkaRaJA/IKj7ZFMnWeCBnppa9bXGLuJvsakRHH4lYoBxS8g7GVlud9M"58 min
TXTmicrosoft.com"openai-domain-verification=dv-sFtCvKOlWoe31gpoSvs7cqsP"58 min
TXTmicrosoft.com"hpe-greenlake-domain-verification=495143304a3330533363357a57684f6335556f316f55654675523541464d3954"58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=A5JeyhIFWFj4/epHJwt29GRUSrFwGSwXhrhDMAUSklMhfXjI7gi/ekY/fQSWToZdCw=="58 min
TXTmicrosoft.com"v=MCPv1; k=ecdsap384; p=A/78JIxAOlNwq8f0T/l50w7zhwQFpEuB8/Jz9CafdXNX7ewOluYpS/EEcSmLgxsHXg=="58 min
TXTmicrosoft.com"docker-verification=b912d2f3-8614-4591-962b-9e07dbf7c047"58 min
TXTmicrosoft.com"_ij59qjkrntjw3gpjplj3or17mo3xxvt"58 min
TXTmicrosoft.com"google-site-verification=jwrHU99GU8HSXlRFeywLDZmVawD2DWVCebQ41shKK0M"58 min
TXT_dmarc.microsoft.com"v=DMARC1; p=reject; pct=100; rua=mailto:itex-rua@microsoft.com; ruf=mailto:itex-ruf@microsoft.com; fo=1"43 min
Microsoft – AI, Cloud, Productivity, Computing, Gaming & Apps
Explore Microsoft products and services and support for your home or business. Shop Microsoft 365, Copilot, Teams, Xbox, Windows, Azure, Surface and more.
Built with
Each entry says what gave it away: a response header, a cookie's name, an asset's path or file name, or markup the tool leaves in the page.
Versions are checked against endoflife.date's support schedules and, for JavaScript packages, OSV's vulnerability database, which carries
GitHub's security advisories.
CDN & edge
Azure Front Door
x-azure-ref header
Fonts
Latest
self-hosted font
How it's made
RenderingPrerendered pages are built ahead of time and served as files. Pages rendered on each request are built by server code for every visitor. Pages drawn in the browser arrive nearly empty and depend on JavaScript, which most AI crawlers don't run. Islands are interactive parts in otherwise static HTML.
Prerendered, refreshed in the backgroundCache-Control: max-age=600,s-maxage=86400
Cache-Control
max-age=600,s-maxage=86400
HTML
189.2 KB · sent gzip-compressed
Scripts
120 files · 12 inline1 from other sites · 103 modules
Render-blockingPlain scripts in the page's head, without async, defer or type=module. The browser shows nothing until each one has downloaded and run.
6 scripts
Code from other sites
Scripts a page loads from another domain run with the same power as its own code: they can read what visitors type and change the page.
heade.rs checks what the HTML loads, not what tag managers add once they run.
Integrity checksSubresource Integrity: the script tag carries a hash of the file, so the browser refuses it if the other site changes it. Analytics and tag manager scripts change by design and can't carry one; pinned library files can.
TrainingSearchOn request
They visit a page when someone asks an assistant about it. ChatGPT's, Perplexity's, Meta's and Amazon's treat robots.txt as advisory;
Anthropic's and Mistral's follow it.
Can cite itThe AI products that can use the site in their answers: each answers from one crawler (OAI-SearchBot for ChatGPT search, Googlebot for AI Overviews, bingbot for Copilot), and robots directives on the front page, like noindex, nosnippet and noarchive, keep some out.
Without JavaScriptText on the front page before any scripts run: what GPTBot, ClaudeBot, PerplexityBot and most agents read. Google, Bing and Apple's crawlers run scripts.
702 words
MarkdownAgents like Claude Code, Cursor and OpenCode ask for Markdown in their Accept header. It's the page without its markup, so it costs them far fewer tokens.
Not offered
llms.txtA Markdown file listing a site's key pages for AI tools. Coding agents read it; search crawlers mostly don't.
Not published
Structured dataschema.org JSON-LD in the page: facts about the site in a form machines read directly.
None on the front page
Tools
Ways an AI agent can do things on the site, not just read it: an MCP server that apps like Claude, ChatGPT and Cursor connect to, an API
catalog, packaged agent skills, a shopping profile (UCP), or tools the page offers AI in the browser (WebMCP). heade.rs looks in the official
MCP Registry and the files the site publishes under /.well-known/.
No MCP server, API catalog, agent skills, shopping profile or in-page tools found.