Blog
22 posts
BGP Routing Basics: How the Internet Finds Its Way
Learn how BGP connects autonomous systems across the internet, how routing decisions are made, and why BGP hijacking is a serious threat.
Geo-blocking Explained: How It Works and How to Get Around It
Understand how geo-blocking uses IP geolocation to restrict access, where it's applied, and legitimate ways to bypass regional restrictions.
IP Reputation Score: How to Check and Improve Your IP's Trustworthiness
Understand what IP reputation is, what affects it, how to check your score, and steps to improve a damaged reputation.
Reverse DNS (PTR) Lookup: Finding Domains from IP Addresses
Learn what reverse DNS is, how PTR records work, why they matter for email delivery, and how to perform reverse lookups step by step.
DDoS Attacks Explained: How They Work and How to Defend
Understand DDoS attack types, how botnets operate, notable incidents, and proven defense strategies from an IP perspective.
Tor vs VPN: Key Differences and When to Use Each
Compare Tor and VPN by speed, anonymity, ease of use, and security to find the right privacy tool for your needs.
IP Address Lookup API Guide for Developers
A practical guide to IP address lookup APIs — compare services, see code examples, and learn best practices for integrating IP geolocation into your apps.
DoH and DoT Explained: Encrypted DNS Setup Guide
Learn how DNS over HTTPS (DoH) and DNS over TLS (DoT) protect your DNS queries, and how to enable them on every major browser and OS.
How to Change Your IP Address: VPN, Proxy, and Router Reset
Learn when and how to change your IP address using VPNs, proxies, router restarts, and other practical methods.
IPv6 Explained: Why It Matters and How to Transition
Understand why IPv6 is essential, how it differs from IPv4, transition strategies, and global adoption trends.
5 Ways to Check Your IP Address
Discover five practical methods to find your public IP address — from web tools and terminal commands to APIs and router settings.
Email Deliverability and IP Reputation: How to Avoid the Spam Folder
Learn how SPF, DKIM, and DMARC authentication work, why IP reputation matters for email delivery, and how to manage IP warming, shared vs dedicated IPs, and reputation monitoring.
Network Security Basics: What You Need to Know from an IP Perspective
Learn the fundamentals of network security from an IP perspective, including firewalls, access control, port scanning, DDoS attacks, IP spoofing, and VPN privacy.
IP Geolocation Accuracy: How Precise Is It Really?
Analyze the accuracy of IP-based geolocation at country, region, city, and coordinate levels, and learn what factors affect precision.
What Is Whois? How to Look Up IP and Domain Ownership
Learn about Whois and RDAP protocols, what information they reveal, how to read results, and practical use cases for domain and IP lookups.
The Complete Guide to CIDR Notation and Subnet Calculation
Understand CIDR notation, subnet masks, and network address calculation with practical examples and a comprehensive reference table.
IP Blacklist Check Guide: Find Out If Your IP Is Blocked
Learn what IP blacklists (DNSBLs) are, why IPs get listed, how to check your status, and how to request removal.
How DNS Works: Understanding the Internet's Phone Book
Learn how DNS translates domain names to IP addresses, from hierarchy and query types to caching, security, and modern protocols.
DNS Lookup Guide: Finding IP Addresses from Domain Names
A comprehensive guide to DNS — how it works, record types (A, AAAA, MX, TXT, NS, CNAME), command-line tools like nslookup and dig, and TTL caching.
VPN Detection Methods: How Websites Know You're Using a VPN
A detailed look at how websites and services detect VPN and proxy usage, covering IP databases, DNS leaks, WebRTC leaks, and latency analysis.
Public IP vs Private IP: Differences and How to Check
Understand the difference between public and private IP addresses, how NAT works, RFC 1918 ranges, and how to find your own IP.
Complete Guide to IP Addresses: IPv4, IPv6, and GeoIP
Learn everything about IP addresses — from the basics of IPv4 and IPv6 structure to how GeoIP technology pinpoints your location.