Skip to content
RU Sign In
RU

Website uptime check

Pre-run HTTP, SSL and DNS reports for the most-visited domains. Search any site or pick one from the list.

371 domains checked
1,367ms avg response
32 m last update

Popular categories

Big Tech 8/8
G google.com 422 ms A A apple.com 304 ms A+ M microsoft.com 461 ms A A amazon.com 1,208 ms A G github.com 1,568 ms A C cloudflare.com 437 ms A+ W wikipedia.org 444 ms A N netflix.com 206 ms B
Developer → 7/8
G github.com 1,568 ms A S stackoverflow.com 237 ms B G gitlab.com 4,848 ms C N npmjs.com 230 ms B D docker.com 526 ms A php.net not checked P python.org 332 ms A+ N nodejs.org 274 ms A
Cloud & SaaS → 5/8
C cloudflare.com 437 ms A+ V vercel.com 199 ms A+ N netlify.com 456 ms A digitalocean.com not checked S stripe.com 443 ms A+ F figma.com 801 ms A+ notion.so not checked slack.com not checked
E-commerce → 8/8
A amazon.com 1,208 ms A A aliexpress.com 1,067 ms B E ebay.com 601 ms C S shopify.com 354 ms A E etsy.com 438 ms C W walmart.com 487 ms A+ T target.com 260 ms B A alibaba.com 1,102 ms B
News → 5/8
bbc.com not checked nytimes.com not checked T theguardian.com 474 ms A+ R reuters.com 735 ms C B bloomberg.com 626 ms C F forbes.com 885 ms A+ T techcrunch.com 144 ms A+ wired.com not checked
Fintech → 3/8
S stripe.com 443 ms A+ P paypal.com 1,528 ms B square.com not checked A adyen.com 1,025 ms A paddle.com not checked braintree.com not checked mollie.com not checked chargebee.com not checked

Recently checked

All checked domains

google.com
200 422 ms A
youtube.com
301 19,084 ms C
discord.com
200 121 ms A+
habr.com
200 642 ms A
github.com
200 1,568 ms A
cloudflare.com
200 437 ms A+
vk.com
200 203 ms A+
coursera.org
200 862 ms A
beget.com
200 121 ms A+
aliexpress.com
200 1,067 ms B
vercel.com
200 199 ms A+
hetrixtools.com
200 349 ms A
heroku.com
200 483 ms A+
grafana.com
200 248 ms A+
gitlab.com
200 4,848 ms C
getbootstrap.com
200 122 ms A
forbes.com
200 885 ms A+
etsy.com
403 438 ms C
eff.org
200 5,178 ms C
edx.org
403 209 ms B
drupal.org
404 718 ms B
docker.com
200 526 ms A
datadog.com
200 409 ms A+
codepen.io
403 150 ms B
cnn.com
200 525 ms A
bugsnag.com
403 111 ms C
bloomberg.com
403 626 ms C
bitbucket.org
200 224 ms A+
angular.dev
200 181 ms A
alibaba.com
200 1,102 ms B
twitch.tv
200 1,359 ms B
nextjs.org
200 130 ms A+
microsoft.com
200 461 ms A
letsencrypt.org
200 207 ms A+
laravel.com
200 893 ms A
kubernetes.io
200 154 ms A
jsfiddle.net
200 611 ms A
joomla.org
521 256 ms F
ebay.com
403 601 ms C
figma.com
200 801 ms A+
apple.com
200 304 ms A+
reddit.com
200 401 ms A+
npmjs.com
403 230 ms B
nodejs.org
200 274 ms A
nginx.org
200 207 ms A
newrelic.com
200 622 ms A
netlify.com
200 456 ms A
netflix.com
403 206 ms B
mozilla.org
200 958 ms A+
amazon.com
200 1,208 ms A
spotify.com
200 1,248 ms B
pagerduty.com
200 1,054 ms B
apache.org
200 159 ms A+
zoom.us
200 362 ms A
yclients.com
200 562 ms A
wordpress.com
200 469 ms A+
wix.com
200 2,290 ms C
walmart.com
200 487 ms A+
vuejs.org
200 165 ms A+
uptimerobot.com
200 2,062 ms B
udemy.com
403 115 ms B
tilda.cc
200 588 ms A
theguardian.com
200 474 ms A+
techcrunch.com
200 144 ms A+
target.com
429 260 ms B
tailwindcss.com
200 191 ms A
svelte.dev
200 116 ms A
stripe.com
200 443 ms A+
stepik.org
502 8,178 ms F
statuscake.com
200 685 ms B
stackoverflow.com
403 237 ms B
ssllabs.com
200 1,173 ms A
squarespace.com
200 605 ms A
shopify.com
200 354 ms A
sentry.io
403 324 ms C
securityheaders.com
403 196 ms B
rubygems.org
200 176 ms A+
react.dev
200 131 ms A
pingdom.com
403 676 ms B
paypal.com
200 1,528 ms B
airbyte.com
200 3,600 ms C
adyen.com
200 1,025 ms A
activecampaign.com
200 305 ms A
abuseipdb.com
403 372 ms B
abtasty.com
403 177 ms C
abstract.com
200 1,218 ms B
9to5mac.com
200 252 ms A+
wikipedia.org
200 444 ms A
reuters.com
401 735 ms C
regru.com
200 9,551 ms C
pypi.org
200 154 ms A+
fornex.com
403 2,009 ms D
airtable.com
301 577 ms B
python.org
200 332 ms A+
honeycomb.io
200 982 ms A+
heap.io
200 431 ms A
hashnode.com
200 171 ms A
gradle.org
200 633 ms A
golang.org
200 487 ms A+
glitchtip.com
200 801 ms A

Showing top 100 of 371 cached domains. Results refreshed nightly.

Frequently asked

What is a website check?
A website check probes a domain over HTTPS and reports status code, response time, SSL certificate validity, DNS records and security header posture. Enterno.io runs such checks automatically for 371+ curated domains and makes the cached reports available under /check/<domain>.
How often are reports refreshed?
Our background probe re-checks every curated domain every six hours. Results you see on the hub reflect the most recent probe; the history sparkline on each /check/<domain> page shows the last 30 checks.
What do grades A+ / A / B / C / D / F mean?
We compute a composite grade from HTTP status, response time, and the three core security headers (HSTS, CSP, X-Frame-Options). Full rubric: 95+ = A+, 85+ = A, 70+ = B, 55+ = C, 40+ = D, else F. Unreachable or 5xx responses hard-fail to F.
Can I request a domain be added?
Yes — visit /check/<any-domain> and the suggestion form appears if the domain is not yet on our whitelist. We review requests within 24–48 hours.
Is this free?
Browsing the catalog and every /check/<domain> report is free with no signup. For monitoring your own sites with alerts, see our pricing page.
Where does the data come from?
All reports are generated by Enterno.io infrastructure using standard HTTPS probes from our own servers. No third-party scraping, no shared databases.

About this catalog

Curated, not crawled

Only manually whitelisted domains get a public page. This keeps the catalog focused on sites that matter to real users instead of diluting it with random SEO-bait URLs.

Real probes, not scraped data

Every report comes from an HTTPS probe performed by our own infrastructure — we measure the actual server behaviour, not what was reported somewhere else six months ago.

History included

Every /check/<domain> page shows the last 30 checks as a tile row so you can see whether a site has been stable or flaky recently — at a glance, no signup.

No tracking, no login

Browsing the catalog requires no account and sets no tracking cookies. All data is public by design — share any /check/<domain> URL with anyone.

Start monitoring for free

Sign up and get access to API, monitoring and notifications

Create Account API Documentation