Location
Ho Chi Minh City, Vietnam
Within about 20 km
Domain
vacuumservices.com.vn
Hosted by AZDIGI in Ho Chi Minh City, Vietnam.
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.
AS63760AZDIGI
AZDIGI Corporation
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 valid103.221.220.0/22
Seen by 2,488 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
- AS63760AZDIGI
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
Avacuumservices.com.vn103.221.222.4410 min
NSvacuumservices.com.vnns-b1.tenten.vn1 hr
NSvacuumservices.com.vnns-b3.tenten.vn1 hr
NSvacuumservices.com.vnns-b2.tenten.vn1 hr
TXTvacuumservices.com.vn"google-site-verification=jpAMIqXFzLt1Gp5oaLlauZHSmagIUklkMhgKpy167Y8"1 hr
Can be spoofed
There's no SPF or DMARC record, so anyone can send mail that claims to be from vacuumservices.com.vn.
- Receives mail
- No mail servers
- SPFLists the servers allowed to send mail for the domain. Receivers check it against the sending server.
- Missing
- 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
Exposure
Open ports
None seenShodan hasn't found any open ports on this address.
From Shodan InternetDB, updated weekly.
Details
Network
- IPv4
- 103.221.222.44
- ASNThe autonomous system number of the network that announces this address.
- AS63760
- Operator
- AZDIGI Corporation
- PrefixThe block of addresses announced over BGP that contains this address.
- 103.221.220.0/22
- RPKIWhether a signed record (ROA) authorizes this network to announce this prefix.
- Valid
- VisibilityHow many bgp.tools peers carry this announcement.
- 2,488 peers
- Registry
- APNIC
Location
- Country
- Vietnam
- Region
- Ho Chi Minh
- City
- Ho Chi Minh City
- Coordinates
- 10.8220° N, 106.6257° E
- Accuracy
- Within about 20 km
- Time zone
- Asia/Ho_Chi_MinhUTC+7
- Local time
- 02:08
- Continent
- Asia
Registration
Stream was cancelled.
Website
Page
Bơm hút chân không Hyesungtech
Công ty Hyesungtech chuyên các dịch vụ bơm chân không, giải pháp công nghệ chân không tiên tiến, các sản phẩm máy bơm hút chân không chất lượng cao!
- Language
- Vietnamese
Built with
- Framework
- PHPx-powered-by header
- CMS
- WordPresspage markup
- Server
- LiteSpeedserver header “LiteSpeed”
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
- LiteSpeed
server header “LiteSpeed”
- LiteSpeed Cache
x-litespeed-cache header
Backend
- PHP8.2.34Security fixes only
x-powered-by header
CMS
- WordPress
page markup
Add-ons
- Hyetechtheme
/wp-content/themes/hyetech/
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.
- Complete HTML2,797 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 cacheLiteSpeed
- HTML
- 182.8 KB · sent Brotli-compressed
- Scripts
- 3 files · 5 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
HTTPS
Certificate
Valid- Issuer
- Let's Encrypt
- Issuing CA
- YR1
- Covers
- vacuumservices.com.vn
- Also validOther unexpired certificates for this name, found in Certificate Transparency logs.
- 1 more certificate
Sep 22, 202670 days leftDec 21, 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 subdomains
- 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
- 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 OK2226 ms from CMHDNS lookup543 ms
200 vacuumservices.com.vn2226 ms
DNSConnect (TCP + TLS)Waiting for the replyFrom Cloudflare's CMH data center
Response headers
- connection
- close
- x-powered-by
- PHP/8.2.34
- content-type
- text/html; charset=UTF-8
- x-hyetech-cache
- MISS
- link
- <https://vacuumservices.com.vn/wp-json/>; rel="https://api.w.org/"
- vary
- Accept-Encoding
- etag
- "3717-1791536607;br"
- x-litespeed-cache
- hit
- transfer-encoding
- chunked
- content-encoding
- br
- date
- Mon, 12 Oct 2026 19:08:33 GMT
- server
- LiteSpeed
- strict-transport-security
- max-age=31536000; includeSubDomains; preload
- content-security-policy
default-src 'self'; img-src 'self' data: https:; script-src 'self' 'unsafe-inline' https:; worker-src 'self' blob:; style-src 'self' 'unsafe-inline' https:; font-src 'self' data: https:; connect-src 'self' https:; frame-src 'self' https://w… Show all
default-src 'self'; img-src 'self' data: https:; script-src 'self' 'unsafe-inline' https:; worker-src 'self' blob:; style-src 'self' 'unsafe-inline' https:; font-src 'self' data: https:; connect-src 'self' https:; frame-src 'self' https://www.youtube.com https://www.youtube-nocookie.com; frame-ancestors 'self'; base-uri 'self'; form-action 'self'- x-frame-options
- SAMEORIGIN
- x-content-type-options
- nosniff
- referrer-policy
- strict-origin-when-cross-origin
- permissions-policy
- accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()
- alt-svc
- h3=":443"; ma=2592000, h3-29=":443"; ma=2592000
AI & agents
Crawler rules unknown
robots.txt couldn't be read, so which AI crawlers it lets in is unknown.
Crawlers
Couldn't read robots.txt.
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.
- 2,797 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.
- Not published
- Structured dataschema.org JSON-LD in the page: facts about the site in a form machines read directly.
- Corporation, ProfessionalService
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.