Location
San Francisco, United States
Within about 20 km
Domain
heroku.com
Hosted by Automattic in San Francisco, 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.
AS2635Automattic
Automattic, 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 valid192.0.66.0/24
Seen by 3,163 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
- AS2635Automattic
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 heroku.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 else9 of 10 DNS lookups · includes _spf.google.com, mailgun.org…
- 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
Aheroku.com192.0.66.1105 min
AAAAheroku.com2a04:fa87:fffd::c000:426e5 min
NSheroku.comdns1.p01.nsone.net8 min
NSheroku.comdns2.p01.nsone.net8 min
NSheroku.comdns3.p01.nsone.net8 min
NSheroku.comdns4.p01.nsone.net8 min
NSheroku.comns01.herokudns.net8 min
NSheroku.comns02.herokudns.net8 min
NSheroku.comns03.herokudns.net8 min
NSheroku.comns04.herokudns.net8 min
MXheroku.com1 smtp.google.com8 min
TXTheroku.com"36fded18-0a5e-4a1f-b182-d2e4cfb54606"8 min
TXTheroku.com"google-site-verification=0lwG2NjL9452N97Edm9qR-fw8FyHVWarr4WKwWKIoSA"8 min
TXTheroku.com"google-site-verification=8HRJpo1MsC3G8GZpZiEWM5yXbzFB8NKa38O6ZjuTc-w"8 min
TXTheroku.com"google-site-verification=uk9Ibe3zvPE8drXYiXzryAr19xY3fdyBeEkBp5fkiZY"8 min
TXTheroku.com"v=spf1 ip4:167.89.4.18 include:_spf.google.com include:mailgun.org include:aspmx.pardot.com exists:%{i}._spf.corp.salesforce.com ~all"8 min
TXT_dmarc.reject100.salesforce.com"v=DMARC1;p=reject;fo=1:d:s;pct=100;rua=mailto:dmarc_agg@vali.email,mailto:0e5a5c34@inbox.ondmarc.com;ruf=mailto:0e5a5c34@inbox.ondmarc.com"1 hr
Exposure
Open ports
2 open- 80HTTP
- 443HTTPS
- Software
- nginx
- Seen asHostnames Shodan has seen pointing at, or presented by, this address.
- www.heroku.comheroku.com
From Shodan InternetDB, updated weekly.
Details
Network
- IPv4
- 192.0.66.110
- ASNThe autonomous system number of the network that announces this address.
- AS2635
- Operator
- Automattic, Inc
- PrefixThe block of addresses announced over BGP that contains this address.
- 192.0.66.0/24
- RPKIWhether a signed record (ROA) authorizes this network to announce this prefix.
- Valid
- VisibilityHow many bgp.tools peers carry this announcement.
- 3,163 peers
- Registry
- ARIN
Location
- Country
- United States
- Region
- California
- City
- San Francisco
- Coordinates
- 37.7794° N, 122.4176° W
- Accuracy
- Within about 20 km
- Time zone
- America/Los_AngelesUTC-7
- Local time
- 10:56
- 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
- MarkMonitor Inc.
- Registered
- Jun 15, 200719 years ago
- Expires
- Jun 15, 2027in 8 months
- Updated
- Mar 30, 2026
- StatusRegistry flags on the domain, such as locks that stop unauthorized transfers or changes.
- Delete lockedTransfer lockedUpdate lockedDelete locked by registryTransfer locked by registryUpdate locked by registry
- DNSSECDNSSEC signs DNS answers so they can't be forged on the way to you.
- Unsigned
- Name servers
- dns1.p01.nsone.netdns2.p01.nsone.netdns3.p01.nsone.netdns4.p01.nsone.netns01.herokudns.netns02.herokudns.netns03.herokudns.netns04.herokudns.net
- Registrant
- Redacted for privacy
Jun 15, 2007245 days leftJun 15, 2027
Website
Page
Heroku | The Cloud Application Platform For Developers
Experience fully managed app hosting that just works. Build, deploy, and scale on the battle-tested platform that defines the industry.
- Language
- American English
- Theme color
- #5A1BA9
Built with
- CMS
- WordPresspage markup
- Server
- nginxserver header “nginx”
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.
Server
- nginx
server header “nginx”
CMS
- WordPress
page markup
Add-ons
- Yoast SEO
HTML comment
- Orbitmedia Elementor7.1.3theme
/wp-content/themes/orbitmedia-elementor/
- Elementor8.4.5
/wp-content/plugins/elementor/
- Elementor Pro4.3.0
/wp-content/plugins/elementor-pro/
- Gravityformsrecaptcha2.2.2
/wp-content/plugins/gravityformsrecaptcha/
- Essential Addons6.8.5
/wp-content/plugins/essential-addons-for-elementor-lite/
- Megamenu3.10.8
/wp-content/plugins/megamenu/
- Megamenu Pro2.4.2
/wp-content/plugins/megamenu-pro/
- WP Media Folder
/wp-content/plugins/wp-media-folder/
UI
- jQuery3.7.1Security fixes only
file name jquery.min.js?ver=3.7.1
Fonts
- Benton Sans
self-hosted font
Libraries
- jQuery Migrate3.4.1
file name jquery-migrate.min.js?ver=3.4.1
- Prism1.30.0
loaded from cdnjs.cloudflare.com
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.
- Complete HTML2,027 words before any script runs
- 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 cachea cache
- Cache-Control
- public, max-age=3600
- HTML
- 424.4 KB · sent Brotli-compressed
- Scripts
- 32 files · 16 inline8 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.
- 2 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.
- Public CDNsOpen-source packages loaded straight from a public CDN. A floating version (@3, @latest or none) can change under the site without a deploy. Without an integrity attribute, the browser can't tell if the CDN's copy was tampered with.
- prism@1.30.0No integrity checkprism@1.30.0No integrity checkprism@1.30.0No integrity checkprism@1.30.0No integrity checkprism@1.30.0No integrity checkprism@1.30.0No integrity checkand 2 more
- 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 8 scripts
Adding integrity attributes to those tags makes browsers refuse a tampered copy.
HTTPS
Certificate
Valid- Issuer
- Let's Encrypt
- Issuing CA
- YE1
- Covers
- heroku.com, www.heroku.com
- Also validOther unexpired certificates for this name, found in Certificate Transparency logs.
- 2 more certificates
Sep 7, 202654 days leftDec 6, 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 yearRemoved from preload
- 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 6 of 7
- HSTSpresent
- CSPpresent
- Framingpresent
- No sniffingpresent
- Referrerpresent
- Permissionspresent
- Isolationmissing
Response
200 OK409 ms from CMHDNS lookup15 ms
301 heroku.com65 ms
200 www.heroku.com409 ms
DNSConnect (TCP + TLS)Waiting for the replyFrom Cloudflare's CMH data center
Response headers
- server
- nginx
- date
- Tue, 13 Oct 2026 17:56:36 GMT
- content-type
- text/html; charset=UTF-8
- transfer-encoding
- chunked
- connection
- close
- vary
- Accept-Encoding
- host-header
- a9130478a60e5f9135f765b23f26593b
- x-xss-protection
- 1; mode=block
- x-frame-options
- SAMEORIGIN
- x-content-type-options
- nosniff
- content-security-policy
default-src https: data: wss://*.hotjar.com wss://*.crazyegg.com *.crazyegg.com wss://*.zohopublic.com; script-src https: blob: data: 'unsafe-inline' 'unsafe-eval'; style-src https: data: 'unsafe-inline'; img-src data: https: 'unsafe-inline… Show all
default-src https: data: wss://*.hotjar.com wss://*.crazyegg.com *.crazyegg.com wss://*.zohopublic.com; script-src https: blob: data: 'unsafe-inline' 'unsafe-eval'; style-src https: data: 'unsafe-inline'; img-src data: https: 'unsafe-inline'; font-src data: https: 'unsafe-inline'; frame-ancestors 'self'; object-src 'self' blob; upgrade-insecure-requests; media-src 'self' blob: data: https:;- referrer-policy
- no-referrer-when-downgrade
- permissions-policy
- autoplay=(), camera=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), publickey-credentials-get=(), usb=(), browsing-topics=()
- content-encoding
- br
- cache-control
- public, max-age=3600
- x-rq
- mdw1 0 40 9980
- x-cache
- HIT
- accept-ranges
- bytes
- strict-transport-security
- max-age=31536000
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.
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.
ai-train=noai-input=yessearch=yes
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.
- 2,027 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.
- 68 links in 8 sectionsby Yoast SEO
- Structured dataschema.org JSON-LD in the page: facts about the site in a form machines read directly.
- WebPage, WebSite, Corporation, SearchAction
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.