Network knowledge
Clear explanations of IP addresses, IPv4, IPv6, DNS and everyday network connections.
What is an IP address?
Learn what IP addresses do, how to recognize IPv4 and IPv6, and why an address is not a permanent personal identity.
Read articlePublic vs. private IP addresses: what's the difference?
Understand address scope, private IPv4 ranges and NAT, and why several devices can share one public internet address.
Read articleIPv4 vs. IPv6: what's the difference?
Compare address formats and dual-stack connections, and learn why protocol version alone does not determine speed or availability.
Read articleStatic vs. dynamic IP addresses
Understand address leases, fixed assignments and the difference between a stable local address and a static public IP.
Read articleWhat is DNS, and how does a domain find an IP address?
Learn how DNS resolution works, what common record types mean, and why cached answers can outlive a DNS change.
Read articleWhy can Wi-Fi and mobile data show different IP addresses?
Understand how access networks, shared exits and IPv4 or IPv6 affect the address a phone uses on the internet.
Read articleWhy do different websites show different IP addresses?
Understand how VPN split tunneling, proxies, IPv4, IPv6 and connection changes affect the IP websites see, and how location differences fit in.
Read articleWhat can someone do with my IP address?
What your public IP can reveal, the limits of location lookups, and practical privacy and security considerations when sharing it.
Read articleWill changing DNS make my internet or gaming faster?
Understand DNS lookup time, download bandwidth and game latency, and why caching and content delivery can change the result.
Read articleLong-running public DNS services: addresses and regional choices
Public DNS IPv4, IPv6 and encrypted endpoints, with clear service modes and regional considerations instead of a universal fastest-DNS ranking.
Read articleWhat are ASN and network organization in an IP lookup?
Understand network numbers, organizations and access providers, and how registration, routing observations and location databases contribute different information.
Read articleWhy do websites keep asking me to verify that I'm human?
Understand why human verification appears, how shared IPs, proxies, browser conditions and site rules may matter, and what an IP lookup cannot tell you.
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