habrahabr.ru — free HTTP / SSL / DNS check 2026

Enterno.io Editorial Team

habrahabr.ru is up today?

Last automated check 2 h ago returned 200 in 387 ms. See below for a full HTTP + security breakdown, or run a fresh check.

Up 200 387 ms Checked 2 h ago

Run new check → I have a problem ↓

Status 200

Response time 387 ms

Health Score A+

Checks 35

Last check 28.04.2026 18:04

habrahabr.ru is a Russian-segment website from the social networks segment. It responds quickly with a current HTTP 200 response in 387 ms. Our automated probe last ran today, after 35 checks in total. Overall health grade: A+ — fast response + most security headers in place. Of the three core security headers (Strict-Transport-Security, Content-Security-Policy, X-Frame-Options), 2 of 3 are present on this domain.

Why grade A+?

HTTP status: 200 (healthy 2xx)
Response time: 387 ms (fast)
HSTS (Strict-Transport-Security): set
CSP (Content-Security-Policy): missing (−5)
X-Frame-Options: set

Technology stack

Inferred from response headers — server, CDN, compression and backend framework, when available.

gzip

HTTP Response Headers

server QRATOR

date Tue, 28 Apr 2026 15:04:28 GMT

content-type text/html; charset=utf-8

vary Accept-Encoding

x-dns-prefetch-control off

x-frame-options SAMEORIGIN

x-download-options noopen

x-content-type-options nosniff

x-xss-protection 1; mode=block

etag W/"777c0-agTt/F2Rt+l/YbdqXzn5YW5FgEY"

strict-transport-security max-age=31536000; includeSubDomains

x-request-id 54816c97a519975a4776a0c7e661195b

x-request-geoip-country-code GB

x-request-detected-device desktop

x-feature-sc enabled

x-feature-sc-split spliton

content-encoding gzip

cache-control no-cache, no-store, must-revalidate

pragma no-cache

expires 0

set-cookie qrator_msid2=v2.0.1777388668.707.053f9a8bUrCErHLl|Hkr986MGxpugRLYo|QQU2RYDVAGaDOdFmSuEEYiTyhB3pQ0Si/xS/M6+x3XiWnt2IWL0t5pvF2gPwZjSRG5l/7XfvwLxNALQP0fZBHw==-wQEd99CZd2YQNGlyOchFpA18nhM=; Max-Age=1000; Path=/; HttpOnly; Domain=.habr.com;

Security Headers

✓ strict-transport-security

✓ x-content-type-options

✓ x-frame-options

✓ x-xss-protection

✗ content-security-policy

✗ referrer-policy

✗ permissions-policy

Uptime history

100%

uptime · 30 checks

377ms

avg response

21.04 now

Up Down · Probe every 6h. Hover a tile for details.

Got an issue with habrahabr.ru?

Our automated check says the site responds, but you can't reach it? Try the cross-tool diagnostics below — most problems show up in DNS, SSL, or connectivity layers.

DNS SSL Ping Traceroute

About habrahabr.ru

First seen

—

Total checks

35

Protocol

HTTPS

WHOIS

View registrar →

Common issues

1. Site opens for me but not for my users

Regional blocking or ISP-level issues. Have them try ping + traceroute, or test from a different network (mobile vs wifi).

2. Site responds slowly — how to diagnose?

Response times above 1s usually mean TTFB or server overload. Run the PageSpeed check or Ping to see where the lag is.

3. HTTPS / SSL certificate errors

Use the SSL checker — it reports expiry date, chain validity, cipher suite, and PFS status. Most browser warnings come from expired certs or missing intermediate CA.

4. Timeout / no response

DNS misconfiguration, firewall, or dead server. Start with DNS lookup + Ping to localise the failure.

5. What do HTTP 403 / 429 / 503 codes mean?

See our HTTP status code reference. 403 = forbidden (access rules), 429 = rate-limited, 503 = server temporarily down or blocking.

6. DNS resolves slowly or inconsistently

Try DNS propagation check — shows the resolved IP from 8+ global resolvers. Inconsistent answers mean DNS is still propagating.

7. Site loads but assets (images, CSS) are broken

CDN or sub-domain issue. Inspect the HTTP headers above for Cache-Control + CDN-specific headers (X-Served-By, cf-ray). Run the broken-links checker for a full audit.

8. How to contact the site's tech support

Most sites list support contacts at /contact, /help, /support, or in the footer. WHOIS may expose an abuse@ email: look up WHOIS.

Check it yourself

Paste any of these into your terminal or browser devtools to reproduce the result:

curl

curl -I https://habrahabr.ru

JavaScript

fetch('https://habrahabr.ru').then(r => console.log(r.status))

Enterno API

curl -X POST https://enterno.io/api/v4/check \
  -H "X-API-Key: YOUR_KEY" \
  -d "url=habrahabr.ru"

Similar sites to check

Other popular domains with the same TLD and a strong check grade — click to see their report.

vk.com 200 336 ms A+ ok.ru 200 170 ms A+ instagram.com 200 1,303 ms A vc.ru 200 387 ms A tenchat.ru 200 156 ms A+ rutube.ru 200 125 ms A

Dig deeper with Enterno.io

The HTTP probe above shows the surface. Run any of these tools for a full layer-by-layer picture of habrahabr.ru:

Health score Composite HTTP + SSL + DNS + headers grade A–F Security scanner HSTS, CSP, cookies, info disclosure audit SSL / TLS deep check Certificate chain, cipher, PFS, expiry days DNS lookup A, AAAA, MX, NS, TXT, CNAME, SOA DNS propagation Resolution from 8+ global DNS resolvers WHOIS Registrar, creation date, abuse contact PageSpeed LCP, TBT, CLS Core Web Vitals Subdomain enumeration Discover sub.habrahabr.ru records