Network & Hosting
Speed test, my IP, DNS, SSL, HTTP headers, IPv4 / IPv6 subnets, IP formats and CIDR ranges.
Tools in this category
- IPv4 Subnet CalculatorNetwork and broadcast address, host range, subnet mask and subnetting.
- What Is My IPNewSee your public IPv4 / IPv6 address, browser, OS, language and time zone.
- DNS LookupNewCheck A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records, plus SPF and DMARC.
- IPv6 Subnet CalculatorNewIPv6 range, address count, address type and subnetting into /48, /56, /64.
- IP Address ConverterNewConvert IPs to integer, hex, binary, octal, IPv4-mapped IPv6 and back.
- IP Range to CIDRNewTurn IP ranges into CIDR blocks, merge lists and check which block an IP is in.
- SSL CheckerNewCheck a domain's SSL certificate: issuer, expiry date, SAN names, chain and TLS.
- HTTP Header CheckerNewSee the status code, redirect chain, HTTP headers and a security-header score.
- Internet Speed TestNewMeasure ping, jitter, download and upload speed in Mbps to a server in Vietnam, with a live gauge.
Network tools: IP, DNS, SSL, IPv4 / IPv6 subnets
Tools for network and server administrators, hosting work and networking students: see your public IP address, look up a domain's DNS records (A, MX, TXT, NS…), and work out IPv4 network and broadcast addresses, host ranges and subnets.