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Tools for websites, domains and servers

Free online checks and calculators: where a site is hosted, DNS records, whois, SSL certificate — and a VPS for your task from the catalog. No sign-up.

Domains and DNS

Website IP address A domain's current IPv4 and IPv6 and whose network it is DNS records A, AAAA, MX, NS, TXT, CNAME — all of a domain's records at once Domain whois Registrar, registration and expiry dates, DNS servers Domain age When it was registered and how old it is

Website and security

Which hosting is a site on Provider, network (ASN) and server country by domain SSL certificate check Expiry, issuer, chain and domains in the certificate HTTP headers Response code, redirect chain and server headers Website availability Does the site open right now and how fast does it respond IP in blacklists Is the server's address in open spam databases

Calculators

VPS calculator How many cores and how much memory your task needs — and plans from the catalog Subnet calculator CIDR, mask, address range and number of hosts Unit converter GB ⇄ GiB, Mbit/s ⇄ MB/s, traffic per month Password generator Strong passwords for root and panels — created in your browser