Check WebSocket Availability
Test the availability and performance of your WebSocket from 100+ locations worldwide. Know DNS resolve time, connect time, pingpong time, and total response time.
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DNS
Time taken for the server to resolve DNS name to IP Address
Connect
Time taken to setup the between connection Site24x7 and website
First Byte
The time spent waiting for the web server to send data.
Last Byte
The time at which the entire content of the file is downloaded
| Location | Status | IP | DNS (ms) |
Connect (ms) |
First Byte (ms) |
Last Byte (ms) |
Size | Response Time (ms) |
|---|---|---|---|---|---|---|---|---|
LOCATION_NAME |
DNSTime taken for the server to resolve DNS name to IP Address
ConnectTime taken to setup the between connection Site24x7 and website
Handshake TimeThe time taken to complete the handshake
PingPong TimeThe time taken for the WebSocket to provide a pong response for the ping.
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Time (ms)
Check website availability
TOOL_TITLE: TOOL_TEST_DATE
TOOL_TITLE: TOOL_TEST_DATE
Unable to check. Please try again later! | Blacklists | Status | Phising | Malware | Abuse | Cracked Site |
| Blacklists | IP Address |
|---|---|
TOOL_TITLE: TOOL_TEST_DATE
TOOL_TITLE: TOOL_TEST_DATE
TOOL_TITLE: TOOL_TEST_DATE
TOOL_TITLE: TOOL_TEST_DATE
| Webpage URL |
|---|
TOOL_TITLE: TOOL_TEST_DATE
Full Webpage Analysis Report at {0}
Webpage Summary | ||
| Total page size | : | Total page size |
| Total page loading time | : | Total page loading time |
| Total Objects | : | Total Objects |
| Images | : | Images |
| Java Scripts | : | Java Scripts |
| CSS | : | CSS |
TOOL_TITLE: TOOL_TEST_DATE
 SSL/TLS Certificate check failed for domain : DOMAIN_NAME |
TOOL_TITLE: TOOL_TEST_DATE
| SSL/TLS Certificate check failed for domain : DOMAIN_NAME |
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TOOL_TITLE: TOOL_TEST_DATE
 Heartbleed Vulnerability check failed for website : DOMAIN_NAME |
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TOOL_TITLE: TOOL_TEST_DATE
 SSLv3 Poodle Vulnerability check failed for website : DOMAIN_NAME |
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TOOL_TITLE: TOOL_TEST_DATE
| Ghostcat Vulnerability check failed for website : DOMAIN_NAME |
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What is a DNS Lookup?
A DNS lookup queries the Domain Name System (DNS) to retrieve the records associated with a domain name. DNS acts as the phonebook of the internet, translating human-readable domain names into IP addresses and other records that browsers and servers need to route traffic correctly.
When you perform a DNS lookup for a domain like www.example.com, the system contacts authoritative name servers to find the corresponding IP address, mail exchange servers, name servers, and other records. This process happens behind the scenes every time a user visits a website, sends an email, or connects to any internet service.
DNS Record Types Explained
DNS records are resource entries that store information about a domain, including its IP addresses, mail servers, name servers, and more. A DNS lookup retrieves these records from authoritative servers. Below are the DNS record types this tool checks:
- A Record: Maps the domain to its IPv4 address. This is the most common record type used to resolve a domain to a server IP.
- AAAA Record: Maps the domain to its IPv6 address, the newer IP format that supports a larger address space than IPv4.
- CNAME Record: Points an alias or subdomain to another domain name. CNAME records always resolve to a domain, not directly to an IP address.
- MX Record: Specifies the mail servers responsible for receiving email for the domain, along with their priority values.
- TXT Record: Holds text-based data such as SPF (Sender Policy Framework), DKIM, and DMARC records used for email authentication and domain verification.
- NS Record: Lists the authoritative name servers for the domain. These servers hold the definitive DNS records for the zone.
Why Use Site24x7's Free DNS Lookup Tool?
Site24x7's DNS lookup tool provides a complete DNS report for any domain, making it easy to verify records, troubleshoot email delivery issues, or confirm that recent DNS changes have taken effect. For continuous DNS health checks beyond manual lookups, Site24x7 DNS monitoring automates record verification and alerts you to unexpected changes.