No, ISPs are free to assign either Static IPs or Dynamic IPs. Most prefer to assign Dynamic IPs as it gives them more freedom and allows them to support more users than their available IPs, as most users are only online for limited periods and don't need an IP when offline. Usually to get a Static IP a customer must request it from the ISP and pay an extra fee.
ISPs obtain address blocks from registry organizations.
There are a number of different nationwide ISPs offered by different companies. Some of those companies include Verizon, Intergate, and AT&T's U-Verse.
ISPs (Internet Service Providers) acts as Gateway to Network of Networks called Internet for Customers.
A regional ISP is an Internet Service Provider that primarily operates in a specific geographic region or area. They typically offer services like internet access, web hosting, and email to customers within that specific region. Regional ISPs may have a smaller coverage area compared to larger national or international ISPs.
One can find the lists of broadband ISPs on ISPreview website. Few examples of broadband ISPs in the UK are: XILO, AAISP, ICUK, SurfAnyTime, and Aquiss.
principals offered by Isps to connect to the internet
The International Ship and Port Facility Security Code (ISPS Code)
The problem is that some ISPs and networks share IP addresses. When you dial-up to an Internet service provider they randomly assign you an IP address from the group of numbers that they own (unless they promise you a stable or permanent IP address). Other customers of the ISP would have used that number before. Something similar happens with corporate networks and proxy servers. All the traffic from a certain company, for example, would go through one central server. If that server has one IP address everyone at the company, school, library, etc. that uses the local network will have the same IP address. For WikiAnswers contributors, the best thing is to sign in as a member before contributing any questions or answers. When reviewing the contributions of others it can sometimes be difficult to see who wrote what.
An internet service provider (ISP), also sometimes referred to as an Internet access provider (IAP), is a company that offers its customers access to the Internet. The ISP connects to its customers using a data transmission technology appropriate for delivering Internet Protocol datagrams, such as dial-up, DSL, cable modem, wireless or dedicated high-speed interconnects. ISPs also provide Internet e-mail accounts to users which allow them to communicate with one another by sending and receiving electronic messages through their ISP's servers. As part of their e-mail service, ISPs usually offer the user an e-mail client software package, developed either internally or through an outside contract arrangement. ISPs may also provide other services such as remotely storing data files on behalf of their customers, as well as other services unique to each particular ISP.
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An internet service provider (ISP), also sometimes referred to as an Internet access provider (IAP), is a company that offers its customers access to the Internet. The ISP connects to its customers using a data transmission technology appropriate for delivering Internet Protocol datagrams, such as dial-up, DSL, cable modem, wireless or dedicated high-speed interconnects. ISPs also provide Internet e-mail accounts to users which allow them to communicate with one another by sending and receiving electronic messages through their ISP's servers. As part of their e-mail service, ISPs usually offer the user an e-mail client software package, developed either internally or through an outside contract arrangement. ISPs may also provide other services such as remotely storing data files on behalf of their customers, as well as other services unique to each particular ISP.
You can check with the various ISPs in your area. Typically ISPs will offer varying levels of service. There is a price difference depending on the speed you want.