Location
United States
Country level only
Domain
paragraph.com
Served through Cloudflare's network, which answers from the location nearest each visitor.
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.
AS13335Cloudflare
Cloudflare, 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 valid172.66.144.0/20
Seen by 3,395 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
- AS13335Cloudflare
Tracing from a probe near you with Globalping. Hop locations that its round-trip times rule out are left off the map.
DNS records
TypeNameValueTTL
Aparagraph.com172.66.157.2515 min
Aparagraph.com104.20.37.355 min
AAAAparagraph.com2606:4700:10::ac42:9dfb5 min
AAAAparagraph.com2606:4700:10::6814:25235 min
NSparagraph.comlynn.ns.cloudflare.com1 day
NSparagraph.comzelda.ns.cloudflare.com1 day
MXparagraph.com1 smtp.google.com5 min
TXTparagraph.com"00495524"1 min
TXTparagraph.com"google-gws-recovery-domain-verification=57682772"1 min
TXTparagraph.com"google-site-verification=5zvWeGlZVx0s_g_VACAcHFKWjop1cqLd4h4zl3NUIzM"1 min
TXTparagraph.com"google-site-verification=y12B0CTe6sdmwnl5enWl6LRTqMhsYP5uj3mfs4Xu1IM"1 min
TXTparagraph.com"openai-domain-verification=dv-HQVyPHg21QrRMqSJ4lvNSkdH"1 min
TXTparagraph.com"v=spf1 include:_spf.google.com include:sendgrid.net include:amazonses.com ~all"1 min
TXT_dmarc.paragraph.com"v=DMARC1; p=reject; rua=mailto:dmarc@paragraph.com; ruf=mailto:dmarc-failure@paragraph.com; fo=1;"5 min
CAAparagraph.com0 issue "comodoca.com"1 hr
CAAparagraph.com0 issue "digicert.com; cansignhttpexchanges=yes"1 hr
CAAparagraph.com0 issue "letsencrypt.org"1 hr
CAAparagraph.com0 issue "pki.goog; cansignhttpexchanges=yes"1 hr
CAAparagraph.com0 issue "ssl.com"1 hr
CAAparagraph.com0 issuewild "comodoca.com"1 hr
CAAparagraph.com0 issuewild "digicert.com; cansignhttpexchanges=yes"1 hr
CAAparagraph.com0 issuewild "letsencrypt.org"1 hr
CAAparagraph.com0 issuewild "pki.goog; cansignhttpexchanges=yes"1 hr
CAAparagraph.com0 issuewild "ssl.com"1 hr
HTTPSparagraph.com1 . alpn=h3,h2 ipv4hint=104.20.37.35,172.66.157.251 ipv6hint=2606:4700:10::6814:2523,2606:4700:10::ac42:9dfb5 min
Protected from spoofing
Mail that fails its checks is rejected under paragraph.com'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 else4 of 10 DNS lookups · includes _spf.google.com, sendgrid.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
Details
Network
- IPv4
- 172.66.157.251
- ASNThe autonomous system number of the network that announces this address.
- AS13335
- Operator
- Cloudflare, Inc.
- CDNFrom the provider's own published list of its address ranges.
- Cloudflare
- PrefixThe block of addresses announced over BGP that contains this address.
- 172.66.144.0/20
- RPKIWhether a signed record (ROA) authorizes this network to announce this prefix.
- Valid
- VisibilityHow many bgp.tools peers carry this announcement.
- 3,395 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 100,000
- Registrar
- NameCheap, Inc.
- Registered
- Oct 19, 199332 years ago
- Expires
- Oct 18, 2027next year
- Updated
- Sep 18, 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
- lynn.ns.cloudflare.comzelda.ns.cloudflare.com
- Registrant
- Redacted for privacy
Oct 19, 1993371 days leftOct 18, 2027
Website
Page
A media engine for your company | Paragraph
Paragraph's agent turns your company context into posts, newsletters, social campaigns, and landing pages, then ships the work you approve.
- Language
- English
- Theme color
- #ffffff
Built with
- CloudFrom the provider's published address ranges.
- Cloudflare
- CDN
- Cloudflarecf-ray header
- Framework
- Astropage markup
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.
CDN & edge
- Cloudflare
cf-ray header
Framework
- Astro
page markup
Styling
- Tailwind CSS
Tailwind CSS in an inline stylesheet
Fonts
- Arizona Flare
self-hosted font
- Inter
self-hosted font
- ABC Arizona Flare
self-hosted font
- DM Mono
self-hosted font
Components & icons
- shadcn/ui
data-slot attributes
- Lucide
51 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.
- Static HTML with islands11 interactive islands in otherwise static HTML
- IslandsAstro islands: components that load their JavaScript separately, each at the moment its client directive says.
- 1 on load10 when scrolled into view
- HTML
- 625.6 KB
- 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.
- Astro island props 11.1 KB
- Scripts
- 3 files · 12 inlineall from this site · 3 modules
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.
HTTPS
Certificate
Valid- Issuer
- Google Trust Services
- Issuing CA
- WE1
- Covers
- *.paragraph.com, paragraph.com
- Also validOther unexpired certificates for this name, found in Certificate Transparency logs.
- 24 more certificates
Oct 8, 202686 days leftJan 6, 2027
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.
- Not sent
- 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.
- Available
- Encrypted helloEncrypted Client Hello (ECH) hides which site you're visiting from anyone watching the connection.
- Not published
- CAADNS records naming the only certificate authorities allowed to issue certificates for the domain.
- Sectigo, DigiCert, Let's Encrypt, Google Trust Services, SSL.com
- security.txtA standard file (RFC 9116) telling security researchers how to report vulnerabilities.
- Not published
Security headers 0 of 7
- HSTSmissing
- CSPmissing
- Framingmissing
- No sniffingmissing
- Referrermissing
- Permissionsmissing
- Isolationmissing
Response
200 OK74 ms from CMHDNS lookup27 ms
200 paragraph.com74 ms
DNSConnect (TCP + TLS)Waiting for the replyFrom Cloudflare's CMH data center
Response headers
- age
- 9407
- cf-cache-status
- UPDATING
- cf-ray
- a49756cb39ef3f27-CMH
- connection
- close
- content-type
- text/html
- date
- Mon, 12 Oct 2026 16:04:12 GMT
- server
- cloudflare
- transfer-encoding
- chunked
- vary
- accept-encoding
AI & agents
Open to AI crawlers
robots.txt lets every AI crawler in. Agents that ask for Markdown get 14.7 KB instead of 625.6 KB of HTML, and it offers 1 agent skill.
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=yes
It's on Cloudflare, which can also block AI crawlers at its edge whatever robots.txt says.
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.
- 1,539 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 request14.7 KB, 43× smaller · converted by Cloudflare
- llms.txtA Markdown file listing a site's key pages for AI tools. Coding agents read it; search crawlers mostly don't.
- 41 links in 8 sections
- Structured dataschema.org JSON-LD in the page: facts about the site in a form machines read directly.
- Organization, WebSite, WebPage, 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/.
- 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.
- 1 skillDiscovery v0.2.0