9 tools online
Network diagnostics, without the tab‑switching.
IP, DNS, ping, traceroute, uptime, open port, subnet, MAC vendor and blacklist checks for IT and NOC work. Every result has a shareable URL.
- 01 / IP
IP Lookup
Location, ASN, ISP and timezone for any IPv4 or IPv6 address — or your own.
8.8.8.8 Run ▸ — run IP Lookup with this example - 02 / DNS
DNS Lookup
Resolve A, AAAA, MX, TXT, NS and CNAME records over DNS-over-HTTPS.
google.com · MX Run ▸ — run DNS Lookup with this example - 03 / SUBNET
Subnet Calculator
Network, broadcast, netmask, wildcard and usable host range from any IPv4 CIDR.
10.0.4.0/22 Run ▸ — run Subnet Calculator with this example - 04 / MAC
MAC Vendor Lookup
Identify the hardware manufacturer behind a MAC address from its OUI.
3C:5A:B4:12:34:56 Run ▸ — run MAC Vendor Lookup with this example - 05 / RBL
Blacklist Check
Check an IPv4 address against email DNS blacklists (DNSBL/RBL).
127.0.0.2 Run ▸ — run Blacklist Check with this example - 06 / PING
Ping
Real ICMP ping from probes around the world — latency, packet loss and resolved IP.
google.com · PR Run ▸ — run Ping with this example - 07 / DOWN
Down Checker
Is it down for everyone or just me? Check any website from Cloudflare’s network.
github.com Run ▸ — run Down Checker with this example - 08 / TRACE
Traceroute
See every hop between a probe and the target — MTR loss and latency per hop, or classic traceroute.
cloudflare.com · MTR Run ▸ — run Traceroute with this example - 09 / PORT
Port Checker
Is a TCP port open from the internet? Test your port forwarding or any public host.
portquiz.net · 8080 Run ▸ — run Port Checker with this example