Location
Walnut, United States
Within about 20 km
Domain
raindrop.ai
Hosted by Amazon in Walnut, United States.
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 valid76.76.21.0/24
Seen by 3,206 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
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 rejected under raindrop.ai's DMARC policy, so forged mail doesn't reach inboxes.
- Receives mail
- Google Workspace
- Mail servers
- smtp.google.com
- SPFLists the servers allowed to send mail for the domain. Receivers check it against the sending server.
- Soft-fails everything else3 of 10 DNS lookups · includes _spf.google.com, spf.mtasv.net…
- DMARCTells receivers what to do with mail that fails SPF and DKIM: nothing (none), spam folder (quarantine) or reject.
- Rejectsends 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.
- Not published
DNS records
TypeNameValueTTL
Araindrop.ai76.76.21.211 min
NSraindrop.aidns1.registrar-servers.com30 min
NSraindrop.aidns2.registrar-servers.com30 min
MXraindrop.ai1 smtp.google.com30 min
TXTraindrop.ai"bo6qahpz9y"1 min
TXTraindrop.ai"MS=ms19332369"1 min
TXTraindrop.ai"apple-domain-verification=RUSyZYTIIf8MVqdH"1 min
TXTraindrop.ai"apple-domain-verification=axvgobwHBuzavakE"1 min
TXTraindrop.ai"openai-domain-verification=dv-iHd4EJryDAGbfntSPzSMMzEZ"1 min
TXTraindrop.ai"axiom-domain-verification-7s25bn=AFaBvyKgT119DnyhfEUb81Z3i"1 min
TXTraindrop.ai"cursor-domain-verification-5n9qch=cF5bDLIzI4eM15nDB54LtgurA"1 min
TXTraindrop.ai"anthropic-domain-verification-56pmja=2vI9QStFz2ilYTGPg6Nz5JgSO"1 min
TXTraindrop.ai"slack-domain-verification=lW19XWj57eMraZkFcj965DqKLaPzHQFcYCHr0mG8"1 min
TXTraindrop.ai"google-site-verification=08X5eSU5AukLtngNaQFjCND7fcP-H9Ce4phGfTZaQQA"1 min
TXTraindrop.ai"google-site-verification=EB0s5vVWabS0XQr93TZY8RALnEx6p5qRHu4Ejp0LLdg"1 min
TXTraindrop.ai"google-site-verification=IqAyiCnC3834WV4DtHq_DeQt1NucLijVtsjom0nWv5s"1 min
TXTraindrop.ai"notion-domain-verification=Mf8hUtovg5Yq4eDxjsFF4bORcgJJzb14AIxcQR9ATlw"1 min
TXTraindrop.ai"v=spf1 include:_spf.google.com include:spf.mtasv.net include:amazonses.com ~all"1 min
TXTraindrop.ai"stripe-verification=6B49BC66C2F385E636E6DE4F6332DEC4A91055BC40D73550EAA03B04A683BA9D"1 min
TXT_dmarc.raindrop.ai"v=DMARC1; p=reject; pct=100; rua=mailto:re+erukaqoitgd@dmarc.postmarkapp.com; sp=reject; aspf=r;"1 min
Exposure
Open ports
2 open- 80HTTP
- 443HTTPS
- Seen asHostnames Shodan has seen pointing at, or presented by, this address.
- cbcriorancho.orghackpl.us
From Shodan InternetDB, updated weekly.
HTTPS
Certificate
Valid- Issuer
- Let's Encrypt
- Issuing CA
- YR1
- Covers
- raindrop.ai
Aug 21, 202639 days leftNov 19, 2026
From Certificate Transparency logs, via Cert Spotter.
Security
F- HSTSStrict-Transport-Security makes browsers refuse plain HTTP to this site. Preloaded sites are HTTPS-only even on a first visit.
- 2 years
- 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.
- Any CA may issue
- security.txtA standard file (RFC 9116) telling security researchers how to report vulnerabilities.
- Not published
Security headers 1 of 7
- HSTSpresent
- CSPmissing
- Framingmissing
- No sniffingmissing
- Referrermissing
- Permissionsmissing
- Isolationmissing
Response
200 OK46 ms from CMHDNS lookup48 ms
307 raindrop.ai88 ms
200 www.raindrop.ai46 ms
DNSConnect (TCP + TLS)Waiting for the replyFrom Cloudflare's CMH data center
Response headers
- age
- 38
- cache-control
- public, max-age=0, must-revalidate
- content-encoding
- br
- content-type
- text/html; charset=utf-8
- date
- Thu, 08 Oct 2026 21:07:48 GMT
- etag
- W/"wfdcj75b2258cz"
- server
- Vercel
- strict-transport-security
- max-age=63072000
- vary
- rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch
- x-matched-path
- /
- x-nextjs-prerender
- 1
- x-nextjs-stale-time
- 300
- x-powered-by
- Next.js
- x-vercel-cache
- HIT
- x-vercel-id
- cle1::iad1::c8v8z-1791823566405-aea033ef6776
- connection
- close
- transfer-encoding
- chunked
Details
Network
- IPv4
- 76.76.21.21
- 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.
- 76.76.21.0/24
- RPKIWhether a signed record (ROA) authorizes this network to announce this prefix.
- Valid
- VisibilityHow many bgp.tools peers carry this announcement.
- 3,206 peers
- Type
- Content
- Registry
- ARIN
Location
- Country
- United States
- Region
- California
- City
- Walnut
- Coordinates
- 34.0233° N, 117.8512° W
- Accuracy
- Within about 20 km
- Time zone
- America/Los_AngelesUTC-7
- Local time
- 09:46
- Continent
- North America
Registration
RDAP- Registrar
- NameCheap, Inc.
- Registered
- Apr 22, 20206 years ago
- Expires
- Apr 22, 2034in 7 years
- Updated
- Aug 12, 2026
- StatusRegistry flags on the domain, such as locks that stop unauthorized transfers or changes.
- Active
- DNSSECDNSSEC signs DNS answers so they can't be forged on the way to you.
- Unsigned
- Name servers
- dns1.registrar-servers.comdns2.registrar-servers.com
- Registrant
- Redacted for privacy
Apr 22, 20202,750 days leftApr 22, 2034
Website
Page
Raindrop | Detect agent issues. Prevent them from happening.
Trace every run. Auto-fix silent failures. Simulate before shipping. Raindrop helps you detect agent issues and prevent them from happening.
- Language
- English
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
134 Tailwind CSS class names
- CSS Modules
200 CSS Modules class names
Fonts
- Alpha Lyrae
self-hosted font
Components & icons
- Lucide
46 Lucide class names
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 Router
- 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 38 s 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
- 238.5 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 21.5 KB · 9% of the HTML
- Scripts
- 11 files · 6 inline1 from other sites
- 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.
- Tag manager
- Google Tag Manager
- 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.
- 0 of 1 script
AI & agents
Open to AI crawlers
There's no robots.txt, so every AI crawler may come in.
Crawlers
No robots.txtTrainingSearchOn 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
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.
- 3,615 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.
- 0 links in 4 sections
- Structured dataschema.org JSON-LD in the page: facts about the site in a form machines read directly.
- Organization, WebSite
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.