Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
CCrawlabilityActionno robots.txt, sitemap with 0 URLsREVIEW
robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
No robots.txt — crawlers fetch /robots.txt and get 404; not breaking but means default crawl behavior with no directives or sitemap reference.
Learn more ▾ ▴
A minimal robots.txt with `User-agent: * / Allow: / / Sitemap: https://example.com/sitemap.xml` covers the basics. Without it, crawlers behave fine but lose the sitemap signal and can't be selectively blocked from crawl-traps.
Source: robotstxt.org
Search engines may not be able to parse the sitemap. Fix XML validation errors.
An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.
Learn more ▾ ▴
Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.
Source: sitemaps.org / Google Search Central
An empty sitemap provides no value. Add <url> entries for your pages.
An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.
Learn more ▾ ▴
Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.
Source: Google Search Central / sitemaps.org
No robots.txt found
This is fine for most sites — a missing robots.txt allows all crawling by default.
BTLS Certificate Expiry & Recommendations314 days until leaf cert expires — 5 issues to addressREVIEW
Certificate validity
Recommended actions
- Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
- Add includeSubDomains to the HSTS directive
- Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
- Enable DNSSEC on your domain for DNS spoofing protection
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+DNS Records6 A records, 67 ms lookupPASS
| A | 87.240.132.78, 87.240.129.133, 87.240.132.72, 87.240.137.164, 93.186.225.194, 87.240.132.67 |
| AAAA | — |
| CNAME | — |
| NS | ns1.vkontakte.ru, ns2.vkontakte.ru, ns3.vkontakte.ru, ns4.vkontakte.ru |
| MX | 0 mx.vk.com |
| TXT | SPF v=spf1 -all _globalsign-domain-verification=_AUAD9_npQGWkZWkHemy_YJLe_wLqZcdzcbf74TP7j _globalsign-domain-verification=uwZs48HV005U7VCshf3dueaCUvM16p09NhOSxC1fZw _globalsign-domain-verification=iAGxHRDOiw9AkcoqIoEOsJz_MkIFQ7AhHMoI0kSSRK LD6VaYCKete4UB5FIx7snCoJ8bt1nGdeCWe4my5HH5psRaTlzAmvc HARICA-w8CluQWUKn0gHs1Hcjr _globalsign-domain-verification=OU9ZfOZPEfiR3cyBs182s9FWh77AZXsGR_41NgoLlZ |
| CAA | Lookup not available with standard resolver |
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
ARedirect Chain1 redirect(s), 484 ms totalPASS
https://vk.me
184 ms · HTTP/1.1
https://vk.me/app
300 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://vk.me | 301 | 184 ms | HTTP/1.1 | kittenx |
| 2 | https://vk.me/app | 200 | 300 ms | HTTP/1.1 | kittenx |
See the visual redirect chain in the HTTP Probe tab →
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencevk.me — via Regional Network Information Center, JSC dba RU-CENTER, 16 years, 11 months old, hosted on VKONTAKTE-SPB-AS vk.com, RUPASS
10 days
July 24, 2026
314 days
Issued by GlobalSign nv-sa
16 years, 11 months
Registered July 24, 2009
Status unknown
Protects against DNS spoofing
VKONTAKTE-SPB-AS vk.com, RU
ASN AS47541
87.240.132.72
Regional Network Information Center, JSC dba RU-CENTER
Expiry timeline
Recommended actions
- Renew the domain or enable auto-renewal to prevent accidental expiry
Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.
Registrar lock (clientTransferProhibited et al.) prevents unauthorized domain transfers — strongest defense against domain hijacking.
Source: ICANN / domain-security best practice