The blacklist test will check your mail server's IP address against multiple DNS based email spam blacklists. If your mail server has been blacklisted as spammer, probably some of your email messages may not be delivered to your recipients. Email blacklists (also known as DNSBL - DNS-based blackhole lists or RBL - real-time blackhole lists) are a common way of reducing spam and are used as live DNS zones that can be queried in real-time by the mail servers.

Get your SPF record

This test will list MX records for a domain in priority order. The test is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly.

The whois lookup will check the details of a domain name or ip address. It will reveal the owner and tecnical contacts, registar details, and dates of a domain or IP. In the case of a domain name, whois lookup can be used to find out whether a domain name is available or has already been taken by someone else.

A reverse lookup is a query of the DNS for domain names when the IP address is known. The reverse dns lookup will reveal the hostname associated with the given IP address.

View the HTTP headers returned by a domain.

Ping is a basic test that allows you to verify that a particular IP address / hostname exists and is up & running accepting requests. It also counts the time needed for a network packet to leave and return.

A test used to show the route taken by packets across an Internet Protocol (IP) network. It could be used to determine whether routing problems exist on the network or which path IP packets are taking to get from your computer to the remote computer.

Check if a website is online or offline. Server Status Check the status of a website easily by using this tool.

Looks up the DNS record of a domain, supports A, AAAA, CNAME, MX, NS, TXT and SRV records.

The safe browsing test will check if your url is listed as suspicious in Google's index. Safe browsing is a malware and phishing reporting service that provides lists of URLs that contain malware or phishing content. If your site has been compromised and is listed as infected, once you're sure that all malicious code has been removed, you can request a malware review of your site.

Get your current IP address, location, city and country.