Location
United States
Country level only
Domain
vercel.com
Hosted by Amazon in the United States. Only the country is known, which is common for anycast and CDN addresses.
Still looking this up. This tab fills in as the answers arrive.
Network Every network on the internet has an autonomous system number (ASN). This is the one that announces this address.
AS16509Amazon
Amazon.com, Inc.
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 valid64.239.109.0/24
Seen by 3,201 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
Details
Network
- IPv4
- 64.239.109.1
- ASNThe autonomous system number of the network that announces this address.
- AS16509
- Operator
- Amazon.com, Inc.
- PrefixThe block of addresses announced over BGP that contains this address.
- 64.239.109.0/24
- RPKIWhether a signed record (ROA) authorizes this network to announce this prefix.
- Valid
- VisibilityHow many bgp.tools peers carry this announcement.
- 3,201 peers
- Type
- Content
- Registry
- ARIN
Location
Country level- Country
- United States
- Continent
- North America
Registration
RDAP- PopularityCloudflare Radar's ranking of domains by how often 1.1.1.1 users look them up.
- Top 5,000
- Registrar
- Amazon Registrar, Inc.
- Registered
- Oct 4, 199927 years ago
- Expires
- Oct 4, 2029in 2 years
- Updated
- May 16, 2026
- StatusRegistry flags on the domain, such as locks that stop unauthorized transfers or changes.
- Transfer locked
- DNSSECDNSSEC signs DNS answers so they can't be forged on the way to you.
- Unsigned
- Name servers
- a.zeit-world.co.ukb.zeit-world.orge.zeit-world.comf.zeit-world.net
- Registrant
- Redacted for privacy
Oct 4, 19991,089 days leftOct 4, 2029
Route
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
Tracing from a probe near you with Globalping. Hop locations that its round-trip times rule out are left off the map.
Protected from spoofing
Mail that fails its checks is sent to spam under vercel.com's DMARC policy, so forged mail doesn't reach inboxes.
- Receives mail
- Google Workspace
- Mail servers
- aspmx.l.google.comalt1.aspmx.l.google.comalt2.aspmx.l.google.com+2 more
- SPFLists the servers allowed to send mail for the domain. Receivers check it against the sending server.
- Soft-fails everything else10 of 10 DNS lookups · includes _netblocks.google.com, _netblocks2.google.com…
- DMARCTells receivers what to do with mail that fails SPF and DKIM: nothing (none), spam folder (quarantine) or reject.
- Quarantinesends reports
- MTA-STSRequires other mail servers to use encrypted connections (TLS) when delivering to this domain.
- Not published
- TLS reportsAsks other mail servers to report failed encrypted deliveries (TLS-RPT).
- Not requested
- BIMIA brand logo that some mail apps show next to authenticated mail from the domain.
- Logo published
DNS records
TypeNameValueTTL
Avercel.com64.239.109.13 min
Avercel.com64.239.109.1933 min
NSvercel.comns1.vercel-dns.com23 hr
NSvercel.comns2.vercel-dns.com23 hr
MXvercel.com1 aspmx.l.google.com2 sec
MXvercel.com5 alt1.aspmx.l.google.com2 sec
MXvercel.com5 alt2.aspmx.l.google.com2 sec
MXvercel.com10 aspmx2.googlemail.com2 sec
MXvercel.com10 aspmx3.googlemail.com2 sec
TXTvercel.com"google-site-verification=J9NjkBE_oybWpa-OHAkV0VjSjIvIBMfp83tdsQCzxK8"30 min
TXTvercel.com"v=spf1 include:_netblocks.google.com include:_netblocks2.google.com include:_netblocks3.google.com include:mktomail.com include:amazonses.com include:sendgrid.net include:_spf.salesforce.com include:spf.mtasv.net ~all"30 min
TXTvercel.com"doordash-verification=kA2ozHfLLU2lEpqQVmJO7DRKwZArKO"30 min
TXTvercel.com"ahrefs-site-verification_774361e47cac589ba5ff743f90399b1e5792980bd22f0f4c56bfb1eaf571a7e0"30 min
TXTvercel.com"stripe-verification=8ff198a026ba2920fd8f4e45bcc499573d1a342596c6f0f18f3eae226bb8173a"30 min
TXTvercel.com"apple-domain-verification=80dYVZTf3bf7C8H5"30 min
TXTvercel.com"ZOOM_verify_iAqiiWW1TdK-GwbJI7qn1g"30 min
TXTvercel.com"stripe-verification=923c7c6074dc94f4b22136b4236a1dc5433a3276b5fc981799771f781d7a6058"30 min
TXTvercel.com"stripe-verification=69ef655819f74eb6f93f9f7388273112ee8c2439b35502785239d3bf076af574"30 min
TXTvercel.com"MS=ms81951275"30 min
TXTvercel.com"mixpanel-domain-verify=3069307c-7d73-4581-880a-1b61267d06cb"30 min
TXTvercel.com"C575019D1B"30 min
TXTvercel.com"SFMC-JchuOOQGseLonwnFdKq2xDV5UnqnvJRjMKyh7rwz"30 min
TXTvercel.com"loom-verification=5698251381"30 min
TXTvercel.com"notion_verify_82^tYP%}6Q65dbszXu>V?@~stLe]Cm3Dmn8rqe7DZgT1m3o!+PyEbv+Jx04rb%v67BtbG>"30 min
TXTvercel.com"docusign=589bb007-2665-4084-b839-9874df0da0cf"30 min
TXTvercel.com"docusign=8a27eabb-2ba5-4820-a148-36b0ac9f592b"30 min
TXTvercel.com"h1-domain-verification=DmNbUeH65JZUKDLixLxWCEfvFiJcCP6sSR3ymQ3MamqmMN2K"30 min
TXTvercel.com"_saml-domain-challenge=1b4981f2-76a2-401f-8f09-a261a97099af"30 min
TXTvercel.com"whimsical=34ebc92242a47d7e9a6ae5f42f60ad80fccbf094"30 min
TXTvercel.com"_visual-studio-marketplace-vercel.vercel.com:4fe5630e-b256-4d57-9e03-88abeab96b37"30 min
TXTvercel.com"openai-domain-verification=dv-RrobMXwsu06yBo22YAOsZdxP"30 min
TXTvercel.com"stripe-verification=e6c56a2c1de7a8a001d69362c33e8ee39536606dae859f9e5fef982ecd102696"30 min
TXTvercel.com"stripe-verification=D353787AECFE3E8DF14A07DF171A7A0529DB83B8D7CD0C5FD89A9C42A255E38E"30 min
TXTvercel.com"cursor-domain-verification-f3eygw=YMP9VK0KY2xhJrRKFMpkkyhv1"30 min
TXTvercel.com"_k57cawuboit4hp2k6rv5bjbxuvkznwp"30 min
TXTvercel.com"anthropic-domain-verification-08hmep=rIoWryrKgeXgTzXsASQqNA99q"30 min
TXTvercel.com"remote-domain-verification=8be9341d-2ab7-4de7-a26f-68c6af2b30ac"30 min
TXTvercel.com"box-domain-verification=968b9e475ce3f9a3bf3a2436eed2cd67082d8312f5e6559eaa7e1d1514fe03aa"30 min
TXTvercel.com"v=MCPv1; k=ed25519; p=53H31Wxaf08fBk8IOIjlWrxy4pK9KGrLRVSB8WSu8rY="30 min
TXTvercel.com"serval-domain-verification-40ct5x=VbdjZnWHkRJwpBE0IwXuriy03"30 min
TXTvercel.com"amp-by-sourcegraph-domain-verification-st5f9e=172nCAgVw3POSEMQGXOv24XWO"30 min
TXTvercel.com"plain-domain-verification-vkhaan=eY1PYorYjiTuIxRpcsIDKi19X"30 min
TXTvercel.com"carta-domain-verification-wnnawd=jFGjeToDS0JE6iRBOq79AjxaD"30 min
TXTvercel.com"gather-domain-verification=911fa583-4323-4bc7-9a43-a29ae4a6003e"30 min
TXTvercel.com"planet-scale-domain-verification-hx2k58=gjkMML1gwBAfWtiNyHI4qMBL1"30 min
TXT_dmarc.vercel.com"v=DMARC1; p=quarantine; rua=mailto:df9481016e14030@rep.dmarcanalyzer.com; ruf=mailto:df9481016e14030@for.dmarcanalyzer.com; pct=100; fo=1;"30 min
CAAvercel.com0 issue "letsencrypt.org"30 min
CAAvercel.com0 issue "globalsign.com"30 min
CAAvercel.com0 issue "sectigo.com"30 min
CAAvercel.com0 issue "pki.goog"30 min
Exposure
Open ports
2 open- 80HTTP
- 443HTTPS
- Seen asHostnames Shodan has seen pointing at, or presented by, this address.
- 066690731508179e.vercel-dns-013.comdusstech.test.vercel.com
From Shodan InternetDB, updated weekly.
AI & agents
Open to AI crawlers, asks not to be trained on
robots.txt lets every AI crawler in, and its content signals ask AI companies not to train on its pages. Agents that ask for Markdown get 1.7 KB instead of 588.1 KB of HTML, and it offers an MCP server, an API catalog and 9 agent skills.
Crawlers
Allows allTrainingSearchOn 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.
OpenAIGPTBotallowedOAI-SearchBotallowedChatGPT-Userallowed
AnthropicClaudeBotallowedClaude-SearchBotallowedClaude-Userallowed
GoogleGoogle-ExtendedallowedGooglebotallowed—
Microsoft—bingbotallowed—
AppleApplebot-ExtendedallowedApplebotallowed—
Perplexity—PerplexityBotallowedPerplexity-Userallowed
MetaMeta-ExternalAgentallowedMeta-WebIndexerallowedMeta-ExternalFetcherallowed
AmazonAmazonbotallowedAmzn-SearchBotallowedAmzn-Userallowed
MistralMistralAI-TrainingallowedMistralAI-IndexallowedMistralAI-Userallowed
OthersCCBotallowedBytespiderallowedDuckAssistBotallowed
- 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.
- ChatGPT searchClaudePerplexityAI OverviewsGeminiCopilotMeta AISiri
Content signals
Lines in robots.txt (Cloudflare's Content Signals Policy) saying whether pages may be used for search, as input to AI answers (ai-input) and for AI
training. No major AI company has said it follows them.
search=yesai-input=yesai-train=no
Reading
- 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.
- 545 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.
- On request1.7 KB, 342× smaller
- llms.txtA Markdown file listing a site's key pages for AI tools. Coding agents read it; search crawlers mostly don't.
- 25 links in 9 sections
- Structured dataschema.org JSON-LD in the page: facts about the site in a form machines read directly.
- Organization, Service, SoftwareApplication
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/.
- MCP serverModel Context Protocol: a server that AI apps like Claude, ChatGPT and Cursor connect to so they can use a service's tools. Servers in the official MCP Registry are published under the domain's own name, which the registry checked. A server card, which the site's AI Catalog points to, says which MCP revisions the server speaks; 2026-07-28 is the first stateless one.
- com.vercel/vercel-mcpmcp.vercel.com Registry
- APIsAn API catalog (RFC 9727, at /.well-known/api-catalog) lists a site's APIs and links to their machine-readable descriptions, usually OpenAPI.
- 1 in its API catalogapi.vercel.com · OpenAPI
- Agent skillsInstructions and scripts packaged for AI agents (SKILL.md), listed in an index at /.well-known/agent-skills/index.json or in the site's AI Catalog. Tools like Vercel's skills CLI install them.
- 9 skillsDiscovery v0.2.0
- AI catalogAn index at /.well-known/ai-catalog.json of a site's MCP servers, agents and skills, for agents to find them.
- 4 entries
HTTPS
Certificate
Valid- Issuer
- Let's Encrypt
- Issuing CA
- YR1
- Covers
- *.vercel.com, vercel.com
- Also validOther unexpired certificates for this name, found in Certificate Transparency logs.
- 3 more certificates
Sep 25, 202673 days leftDec 24, 2026
From Certificate Transparency logs, via Cert Spotter.
Security
A- HSTSStrict-Transport-Security makes browsers refuse plain HTTP to this site. Preloaded sites are HTTPS-only even on a first visit.
- 1 year · with subdomainsPreloaded in browsers
- HTTP → HTTPSWhether the plain http:// address redirects visitors to the secure one.
- Redirects
- HTTP/3The newest HTTP, over QUIC. Announced in the alt-svc header or the domain's HTTPS DNS record.
- Not announced
- CAADNS records naming the only certificate authorities allowed to issue certificates for the domain.
- Let's Encrypt, GlobalSign, Sectigo, Google Trust Services
- security.txtA standard file (RFC 9116) telling security researchers how to report vulnerabilities.
- https://hackerone.com/vercel
Security headers 5 of 7
- HSTSpresent
- CSPpresent
- Framingpresent
- No sniffingpresent
- Referrerpresent
- Permissionsmissing
- Isolationmissing
Response
200 OK89 ms from CMHDNS lookup3 ms
200 vercel.com89 ms
DNSConnect (TCP + TLS)Waiting for the replyFrom Cloudflare's CMH data center
Website
Page
Agentic Infrastructure - Vercel
The autonomous stack for every app and agent.
- Language
- English
- Theme color
- #FAFAFA
Built with
- Hosting
- Vercelx-vercel-id header
- CDN
- Vercel Edge Networkx-vercel-cache header
- Framework
- Next.jsx-powered-by header
Tech stack
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.
Hosting
- Vercel
x-vercel-id header
CDN & edge
- Vercel Edge Network
x-vercel-cache header
Framework
- Next.jsApp Router
x-powered-by header
UI
- React
Next.js renders with React
Styling
- Tailwind CSS
170 Tailwind CSS class names
Fonts
- Geist Pixel Circle p
self-hosted font
- Geist Pixel Grid p
self-hosted font
- Geist Pixel Line p
self-hosted font
- Geist Pixel Square p
self-hosted font
- Geist Pixel Triangle p
self-hosted font
- Geist
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.
- Prerenderedx-nextjs-prerender headerApp RouterStreams HTML
- Edge cacheWhether a CDN or proxy answered heade.rs's request from its cache, and how long ago that copy was made (the Age header).
- Served from cacheVercel · made 9 min ago
- Cache-Control
- public, max-age=0, must-revalidate
- Server codeWhere the site's server code ran for this request, from the host's request ID. The edge location near heade.rs isn't shown: it's wherever the request came from.
- Washington, D.C. iad1Vercel Functions
- HTML
- 588.1 KB · sent Brotli-compressed
- Data for scriptsData the server writes into the HTML so JavaScript can pick up where the server left off (hydration). Browsers download and parse all of it before the page responds, so large payloads slow pages down, even when the page looks ready.
- React Server Components 324.3 KB · 55% of the HTML
- Scripts
- 44 files · 24 inlineall from this site
- 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.
- 1 script
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.
The HTML loads no scripts from other sites.
Response headers
- accept-ch
- Sec-CH-Prefers-Color-Scheme
- age
- 542
- cache-control
- public, max-age=0, must-revalidate
- content-encoding
- br
- content-security-policy
default-src 'self' vercel.com *.vercel.com assets.vercel.com *.vercel.sh vercel.live wss://*.vercel.com *.codesandbox.io localhost:* chrome-extension://* https://www.youtube-nocookie.com https://risk.clearbit.com https://react-tweet.vercel.… Show all
default-src 'self' vercel.com *.vercel.com assets.vercel.com *.vercel.sh vercel.live wss://*.vercel.com *.codesandbox.io localhost:* chrome-extension://* https://www.youtube-nocookie.com https://risk.clearbit.com https://react-tweet.vercel.app/*;script-src 'self' 'unsafe-eval' 'unsafe-inline' 'inline-speculation-rules' https://snap.licdn.com https://www.youtube.com cdn.vercel-insights.com va.vercel-scripts.com vercel.com *.vercel.com assets.vercel.com *.vercel.sh vercel.live wss://*.vercel.com *.codesandbox.io localhost:* chrome-extension://* https://www.youtube-nocookie.com https://risk.clearbit.com https://react-tweet.vercel.app/* cdp.vercel.com;style-src 'self' 'unsafe-inline' vercel.com *.vercel.com assets.vercel.com *.vercel.sh vercel.live wss://*.vercel.com *.codesandbox.io localhost:* chrome-extension://* https://www.youtube-nocookie.com https://risk.clearbit.com https://react-tweet.vercel.app/*;img-src 'self' blob: data: *.github.io avatars.githubusercontent.com user-images.githubusercontent.com vercel.com vercel.live *.vercel.sh assets.vercel.com cdn.raster.app https://images.ctfassets.net https://www.google.com https://i.ytimg.com https://s3.amazonaws.com pbs.twimg.com https://www.gravatar.com https://lishhsx6kmthaacj.public.blob.vercel-storage.com https://fvqcrhkhgatlyl2m.public.blob.vercel-storage.com;media-src 'self' blob: data: vercel.com *.vercel.com assets.vercel.com *.vercel.sh vercel.live wss://*.vercel.com *.codesandbox.io localhost:* chrome-extension://* https://www.youtube-nocookie.com https://risk.clearbit.com https://react-tweet.vercel.app/*;connect-src 'self' data: *.ingest.sentry.io *.ingest.us.sentry.io wss://ws-us3.pusher.com sockjs-use3.pusher.com react-tweet.vercel.app https://*.contentful.com www.vercel-status.com unpkg.com vercel.com *.vercel.com assets.vercel.com *.vercel.sh vercel.live wss://*.vercel.com *.codesandbox.io localhost:* chrome-extension://* https://www.youtube-nocookie.com https://risk.clearbit.com https://react-tweet.vercel.app/* cdp.vercel.com;font-src 'self' vercel.com assets.vercel.com vercel.live fonts.gstatic.com *.vercel.sh;frame-ancestors 'self' https://vercel.com https://app.contentful.com https://*.contentful.com https://*.vercel.sh https://*.vercel.com- content-type
- text/html; charset=utf-8
- critical-ch
- Sec-CH-Prefers-Color-Scheme
- date
- Mon, 12 Oct 2026 16:36:30 GMT
- etag
- W/"sfhwxw0u27cwfc"
- feature-policy
- fullscreen 'self'; camera 'none'
- link
- </.well-known/api-catalog>; rel="api-catalog", </.well-known/ai-catalog.json>; rel="ai-catalog"; type="application/ai-catalog+json", </.well-known/agent-skills/index.json>; rel="agent-skills"; type="application/json"
- referrer-policy
- origin-when-cross-origin
- server
- Vercel
- set-cookie
_v-consent=%7B%22essential%22%3Atrue%2C%22analytics%22%3Atrue%2C%22marketing%22%3Atrue%2C%22functional%22%3Atrue%2C%22version%22%3A1%7D; Path=/; Expires=Tue, 12 Oct 2027 16:45:34 GMT; Max-Age=31536000; Domain=.vercel.com; Secure; SameSite=l… Show all
_v-consent=%7B%22essential%22%3Atrue%2C%22analytics%22%3Atrue%2C%22marketing%22%3Atrue%2C%22functional%22%3Atrue%2C%22version%22%3A1%7D; Path=/; Expires=Tue, 12 Oct 2027 16:45:34 GMT; Max-Age=31536000; Domain=.vercel.com; Secure; SameSite=lax- set-cookie
- _v-visitor-id=AK1coWMqy9c66qEB_wnOP; Path=/; Expires=Sun, 10 Jan 2027 16:45:34 GMT; Max-Age=7776000; Domain=.vercel.com; Secure; SameSite=lax
- set-cookie
- _v-visitor-id-renewed=1; Path=/; Expires=Tue, 13 Oct 2026 16:45:34 GMT; Max-Age=86400; Domain=.vercel.com; Secure; SameSite=lax
- strict-transport-security
- max-age=31536000; includeSubDomains; preload
- vary
- rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch
- x-content-type-options
- nosniff
- x-dns-prefetch-control
- on
- x-download-options
- noopen
- x-frame-options
- DENY
- x-matched-path
- /precomputed/exp~-empty-/home/eyJhbGciOiJIUzI1NiJ9.Af39.HiggoUXvmLu7osIZ-rMgWYCutUna7fynJKQRarwrMT8/redesign-2026
- x-nextjs-prerender
- 1
- x-nextjs-stale-time
- 300
- x-pathname
- /
- x-powered-by
- Next.js, Payload
- x-vercel-cache
- HIT
- x-vercel-id
- cle1::iad1::qqmp8-1791823534711-23d8bb8d5657
- x-xss-protection
- 0
- connection
- close
- transfer-encoding
- chunked