ISP
Internet Service Provider: the company that provides your internet connection.
An ISP (Internet Service Provider) is the company that connects you to the internet, like Comcast, AT&T, Vodafone, or BT. Your ISP assigns your IP address, provides a DNS resolver (unless you configure a different one), and controls the "last mile" of your internet connection. ISPs can affect your experience by blocking certain ports, throttling traffic, or filtering DNS requests. When troubleshooting connectivity issues, your ISP is often part of the chain you need to investigate.
Related terms
See also
Referenced on
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- About DNS Checker
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- DNS Amplification Attack Explained: How Open Resolvers Enable Massive DDoS
- DNS Blog
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- DNS Propagation Checker
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- DNS Water Torture Attack: How Random Subdomain Floods Overwhelm Nameservers
- Email Blacklist Checker
- Fast Flux DNS: How Botnets Hide Behind Rapidly Rotating IP Addresses
- Free DNS & Network Tools
- Geo
- Geo-licensing logic:
- How DNS Queries Work: A Developer's Guide to the DNS Protocol
- How to Contact Law Enforcement About Cybercrime: Filing Reports With FBI IC3, Europol, and National CERTs
- How to Identify and Manage Web Crawlers: A Sysadmin's Guide to robots.txt, AI Bots, and SEO Crawlers
- How to Report a DDoS Attack to Your ISP: Evidence, Templates, and Escalation Steps
- How to Report a Hacked Server: Filing Abuse Reports After a Compromise
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- How to Report Child Exploitation Material (CSAM) Online: Emergency Contacts and Reporting Steps
- How to Report IP Address Abuse: The Complete Guide to Filing Reports That Get Results
- How to Report Malware and Botnet Command-and-Control Traffic From an IP Address
- How to Report Network Security Incidents to a CERT Team: Templates for Vulnerability Exploitation and Intrusions
- How to Report Phishing Emails and Websites Hosted on an IP Address