u4an.com is hosted on server of Microsoft Azure Cloud (eastasia)

DNS Checker (u4an.com)

DNS (Domain Name System) is a system that manages domain names on the Internet. It is an integral part of the Internet infrastructure, enabling the identification and retrieval of network resources by mapping domain names (e.g., u4an.com) to corresponding IP addresses (e.g., 20.187.76.140).

When you enter a domain name in a web browser, such as u4an.com, the browser needs to know the IP address 20.187.76.140 of the web server to establish a connection. That's when the browser sends a DNS request to a DNS server to look up the IP address associated with the domain name. The DNS server returns the IP address to the browser, allowing it to connect to the web server and retrieve the webpage content.

DNS also facilitates other services such as sending and receiving emails, accessing network services, and various activities on the Internet. It makes it easier for users to access network resources by using domain names instead of having to remember complex IP addresses for each server.

IP info

IP Location

An IP address (Internet Protocol address) is a unique number assigned to each device connected to the Internet. It is used to identify and locate devices within a network.

There are two main versions of IP addresses:

1. IPv4 (Internet Protocol version 4): IPv4 addresses are represented as a series of numbers ranging from 0 to 255, separated by dots. For example: 20.187.76.140

2. IPv6 (Internet Protocol version 6): IPv6 addresses are represented as a hexadecimal string, separated by colons. For example: 2004:0db8:85a5:0000:0000:8a7e:0370:8334.

Each device that connects to the Internet, such as computers, smartphones, or servers, is assigned a unique IP address to facilitate communication and identification on the network. IP addresses enable the localization and identification of each device within the Internet network.