Check a connection with simple tools you start yourself. Nothing runs in the background.
NETWORK STATUS
See the connection type, whether Android has validated internet access, metered status, IPv4/IPv6 addresses, DNS servers, gateway and routes, and Private DNS. Values Android does not provide are shown as unavailable. "Validated" means Android's own check passed; it does not guarantee that every site or service works.
PING
Send 1–20 packets with the system ping tool and see each reply time plus a loss summary. Some networks block ICMP, so a failed ping does not always mean a host is down.
DNS LOOKUP
Look up A and AAAA records and see the timing on the active network.
TCP CONNECT
Test one host and one port you choose, 1–10 attempts, and see the connect time or whether it was refused or timed out. There is no port-range scanning.
HTTP(S) CHECK
See the status code, redirects, timing, TLS version, and the certificate's subject, issuer and expiry. Certificate validation is never disabled.
CONTROL AND PRIVACY
Every test is started by you, time-limited and can be cancelled. Up to 20 recent targets are kept only on your device and can be cleared in Settings. Results can be copied as text. The checks send traffic to the targets you enter and use your network's DNS servers, which can see your IP address and the names you look up. The app itself sends nothing to the developer.
NOT INCLUDED
No speed or bandwidth test, Whois, LAN device scan or background monitoring. No root or ADB needed.
No ads, in-app purchases, account, analytics or crash-reporting SDKs. Permissions: Internet and network state only. 17 languages with an in-app language switch.
Contact: contact@licheng.tech
Network status, Ping, DNS, TCP and HTTPS checks you start yourself. No ads.