Location
United States
Country level only
Domain
dongmeng-group.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 valid104.21.16.0/20
Seen by 3,429 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.
Partly protected
There's no DMARC policy, so each receiver decides for itself what to do with mail that fails dongmeng-group.com's SPF check.
- Receives mail
- Its own servers
- Mail servers
- mxbiz1.qq.commxbiz2.qq.com
- SPFLists the servers allowed to send mail for the domain. Receivers check it against the sending server.
- Soft-fails everything else8 of 10 DNS lookups · includes spf.mail.qq.com
- DMARCTells receivers what to do with mail that fails SPF and DKIM: nothing (none), spam folder (quarantine) or reject.
- Missing
- 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
Adongmeng-group.com104.21.19.25 min
Adongmeng-group.com172.67.184.905 min
AAAAdongmeng-group.com2606:4700:3032::ac43:b85a5 min
AAAAdongmeng-group.com2606:4700:3033::6815:13025 min
NSdongmeng-group.comlola.ns.cloudflare.com1 day
NSdongmeng-group.comnicolas.ns.cloudflare.com1 day
MXdongmeng-group.com10 mxbiz2.qq.com5 min
MXdongmeng-group.com5 mxbiz1.qq.com5 min
TXTdongmeng-group.com"google-site-verification=SWs_lnWidpullUWx1q8KE90dZ6UqXjDOBvZ3YYnU4Qo"5 min
TXTdongmeng-group.com"v=spf1 include:spf.mail.qq.com ~all"5 min
TXTdongmeng-group.com"yandex-verification: 48c5c69485c84509"5 min
HTTPSdongmeng-group.com1 . alpn=h3,h2 ipv4hint=104.21.19.2,172.67.184.90 ech=AEX+DQBBxwAgACBMKvQ/yQwhbzeN7z7ZqJ81H0DVGOnLCcEjUGJNu+gNRwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:b85a,2606:4700:3033::6815:13025 min
Details
Network
- IPv4
- 104.21.19.2
- 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.
- 104.21.16.0/20
- RPKIWhether a signed record (ROA) authorizes this network to announce this prefix.
- Valid
- VisibilityHow many bgp.tools peers carry this announcement.
- 3,429 peers
- Type
- Content
- Registry
- ARIN
Location
Country level- Country
- United States
- Continent
- North America
Registration
RDAP- Registrar
- Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)
- Registered
- Jul 24, 2025last year
- Expires
- Jul 24, 2027in 9 months
- Updated
- Jun 4, 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
- lola.ns.cloudflare.comnicolas.ns.cloudflare.com
- Registrant
- Redacted for privacy
Jul 24, 2025276 days leftJul 24, 2027
Website
Page
DongMeng Group | Crushing & Screening Equipment Manufacturers & Service Providers
Dongmeng Group, a professional manufacturer and service provider of crushing and screening equipment, mainly produces jaw crushers, mobile crushing stations, screening stations and other gravel production line equipment.
- Language
- English
Built with
- CloudFrom the provider's published address ranges.
- Cloudflare
- CDN
- Cloudflarecf-ray 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.
CDN & edge
- Cloudflare
cf-ray header
- Email ObfuscationCloudflare Scrape Shield
/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.…
UI
- jQuery
file name jquery.min.js
Styling
- Bootstrap
data-bs-* attributes
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.
- Rendered on each requestCache-Control: no-store, max-age=0, no-cache
- 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).
- Not cachedCloudflare
- Cache-Control
- no-store, max-age=0, no-cache
- HTML
- 50.7 KB
- Scripts
- 13 files · 3 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.
- 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.
- 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
HTTPS
Certificate
Valid- Issuer
- Let's Encrypt
- Issuing CA
- YE2
- Covers
- *.dongmeng-group.com, dongmeng-group.com
- Also validOther unexpired certificates for this name, found in Certificate Transparency logs.
- 4 more certificates
Oct 2, 202672 days leftDec 31, 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.
- 1 year
- 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.
- Supported
- 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 OK865 ms from CMHDNS lookup28 ms
200 dongmeng-group.com865 ms
DNSConnect (TCP + TLS)Waiting for the replyFrom Cloudflare's CMH data center
Response headers
- alt-svc
- quic=":443"; h3=":443"; h3-29=":443"; h3-27=":443";h3-25=":443"; h3-T050=":443"; h3-Q050=":443";h3-Q049=":443";h3-Q048=":443"; h3-Q046=":443"; h3-Q043=":443"
- cache-control
- no-store, max-age=0, no-cache
- cf-cache-status
- DYNAMIC
- cf-ray
- a4e029c1bb752a83-CMH
- connection
- close
- content-type
- text/html; charset=utf-8
- date
- Wed, 21 Oct 2026 12:11:09 GMT
- nel
- {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
- report-to
{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=DXQ4iKUVXTlftGPYb38oiOEGu0Sg%2BKGPgMAK%2Bha1l55k6QMVZWs2pwE8KQ4gOz91FmOp1eUNFB98GEYsoxIygTYuZhdhBLVTP%2FwN1oGn1KL2zmHCqSME44YqcHFdoC3qv6zwFE0hW… Show all
{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=DXQ4iKUVXTlftGPYb38oiOEGu0Sg%2BKGPgMAK%2Bha1l55k6QMVZWs2pwE8KQ4gOz91FmOp1eUNFB98GEYsoxIygTYuZhdhBLVTP%2FwN1oGn1KL2zmHCqSME44YqcHFdoC3qv6zwFE0hWM%2BKibNgsjld3qA%3D"}]}- server
- cloudflare
- set-cookie
- csrf_cookie_name=8f082ca91c2b9b764a4e2bc130962ca6; expires=Wed, 21-Oct-2026 14:11:09 GMT; Max-Age=7200; path=/; HttpOnly; SameSite=Lax
- strict-transport-security
- max-age=31536000
- transfer-encoding
- chunked
- vary
- Accept-Encoding
AI & agents
Open to AI crawlers
robots.txt lets every AI crawler in.
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
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.
- 392 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.
- 49 links in 6 sections
- 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.