--- title: "#ipv4 articles | Hashnode" description: "Explore 92 articles tagged #ipv4 on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/ipv4" --- Tag # #ipv4 92 posts · 3 followers [Farrukh Tariq](https://hashnode.com/@farrukhtariq23) · [6d ago](https://hashnode.com/posts/your-vpn-changed-your-ipv4-address-what-about-ipv6/6aec68c7fb884969fec7a7f2) ### [Your VPN Changed Your IPv4 Address—What About IPv6?](https://klarvpn.hashnode.dev/your-vpn-changed-your-ipv4-address-what-about-ipv6?utm_source=hashnode&utm_medium=feed) How to test both network paths and interpret IPv6 results without jumping to conclusions. 8 min read · [klarvpn.hashnode.dev](https://klarvpn.hashnode.dev/your-vpn-changed-your-ipv4-address-what-about-ipv6?utm_source=hashnode&utm_medium=feed) [IPYE](https://hashnode.com/@ipye) · [Oct 30](https://hashnode.com/posts/vlsm-in-practice-carving-a-24-into-subnets-of-different-sizes-without-wasting-or-overlapping/6ae40915061988b5be61337f) ### [VLSM in Practice: Carving a /24 into Subnets of Different Sizes Without Wasting or Overlapping](https://ipye-com.hashnode.dev/vlsm-in-practice-carving-a-24-into-subnets-of-different-sizes-without-wasting-or-overlapping?utm_source=hashnode&utm_medium=feed) Disclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. Variable-length subnet masking (VLSM) simply means that the subne 5 min read · [ipye-com.hashnode.dev](https://ipye-com.hashnode.dev/vlsm-in-practice-carving-a-24-into-subnets-of-different-sizes-without-wasting-or-overlapping?utm_source=hashnode&utm_medium=feed) [acidvegas](https://hashnode.com/@acidvegas) · [Oct 12](https://hashnode.com/posts/the-shady-world-of-ip-leasing/6acc6ce0c14230632a234326) ### [The Shady World of IP Leasing](https://acidvegas.hashnode.dev/the-shady-world-of-ip-leasing?utm_source=hashnode&utm_medium=feed) The IPv4 "exhaustion" is not real. The addresses got hoarded and the market devolved into a wild sub-leasing economy where anyone can choose where their IPs appear from, who owns them on paper, and scrub them clean of any history. 14 min read · [acidvegas.hashnode.dev](https://acidvegas.hashnode.dev/the-shady-world-of-ip-leasing?utm_source=hashnode&utm_medium=feed) [2](https://hashnode.com/posts/the-shady-world-of-ip-leasing/6acc6ce0c14230632a234326) [FlareXes](https://hashnode.com/@flarexes) · [Sep 27](https://hashnode.com/posts/ipv4-obfuscation-legacy-parsing-url-tricks-security-vulnerabilities/6ab90c9ce717217d7d54ae68) ### [IPv4 Obfuscation, Legacy Parsing, URL Tricks, and Real-World Security Vulnerabilities](https://flarexes.com/ipv4-obfuscation-legacy-parsing-url-tricks-security-vulnerabilities?utm_source=hashnode&utm_medium=feed) Explore weird IPv4 notation: 8.8.2056, legacy parsing, browser behavior, URL tricks, IPv6, and real-world security bugs hiding behind IP addresses. 20 min read · [flarexes.com](https://flarexes.com/ipv4-obfuscation-legacy-parsing-url-tricks-security-vulnerabilities?utm_source=hashnode&utm_medium=feed) [Maulana](https://hashnode.com/@maldi-08) · [Sep 11](https://hashnode.com/posts/ipv4-subnetting-network-host-addresses/6aa36ec7185562f9dc05d786) ### [How IPv4 Subnetting Determines Network and Host Addresses](https://mauls.hashnode.dev/ipv4-subnetting-network-host-addresses?utm_source=hashnode&utm_medium=feed) Learn how IPv4 subnetting determines network, host, and broadcast addresses using subnet masks and CIDR notation. 13 min read · [mauls.hashnode.dev](https://mauls.hashnode.dev/ipv4-subnetting-network-host-addresses?utm_source=hashnode&utm_medium=feed) [connect](https://hashnode.com/@ipv4tradehub) · [Sep 8](https://hashnode.com/posts/why-ipv4-refuses-to-die-the-1-2b-protocol-still-running-the-web/6a9fde840a8eb002cc626b13) ### [Why IPv4 Refuses to Die: The $1.2B Protocol Still Running the Web](https://ipv4tradehub.hashnode.dev/why-ipv4-refuses-to-die-the-1-2b-protocol-still-running-the-web?utm_source=hashnode&utm_medium=feed) ​In the late 1990s, networking experts predicted that IPv4 (Internet Protocol version 4) would be entirely obsolete by the mid-2010s. Its 32 bit architecture limits the global address pool to roughly 2 min read · [ipv4tradehub.hashnode.dev](https://ipv4tradehub.hashnode.dev/why-ipv4-refuses-to-die-the-1-2b-protocol-still-running-the-web?utm_source=hashnode&utm_medium=feed) [connect](https://hashnode.com/@ipv4tradehub) · [Sep 7](https://hashnode.com/posts/why-haven-t-we-fully-switched-to-ipv6-yet/6a9ea6985d7e30519d8171ec) ### [Why Haven’t We Fully Switched to IPv6 Yet?](https://ipv4tradehub.hashnode.dev/why-haven-t-we-fully-switched-to-ipv6-yet?utm_source=hashnode&utm_medium=feed) For over two decades, network engineers have warned that IPv4 is running out of addresses. IPv6 was created as the ultimate solution, offering 3.4 \\times 10^{38} addresses enough to give every grain o 2 min read · [ipv4tradehub.hashnode.dev](https://ipv4tradehub.hashnode.dev/why-haven-t-we-fully-switched-to-ipv6-yet?utm_source=hashnode&utm_medium=feed) [connect](https://hashnode.com/@ipv4tradehub) · [Sep 5](https://hashnode.com/posts/why-ipv4-still-runs-the-internet-practical-uses-real-world-realities/6a9babec3910d3930f5f81b9) ### [Why IPv4 Still Runs the Internet: Practical Uses & Real-World Realities](https://ipv4tradehub.hashnode.dev/why-ipv4-still-runs-the-internet-practical-uses-real-world-realities?utm_source=hashnode&utm_medium=feed) Despite decades of warnings about IPv4 address exhaustion and the push for IPv6 adoption, IPv4 remains the backbone of modern networking. Engineered in 1981, this 32-bit protocol generates approximate 2 min read · [ipv4tradehub.hashnode.dev](https://ipv4tradehub.hashnode.dev/why-ipv4-still-runs-the-internet-practical-uses-real-world-realities?utm_source=hashnode&utm_medium=feed) [connect](https://hashnode.com/@ipv4tradehub) · [Sep 1](https://hashnode.com/posts/the-undead-protocol-why-ipv4-still-runs-the-internet/6a96e073e4063017b27e718c) ### [The Undead Protocol: Why IPv4 Still Runs the Internet](https://ipv4tradehub.hashnode.dev/the-undead-protocol-why-ipv4-still-runs-the-internet?utm_source=hashnode&utm_medium=feed) IPv6 launched in 1998. It was supposed to kill IPv4. 26 years later... IPv4 is still alive. Still undead. Still running everything. How is that even possible when we officially "ran out" of IPv4 addre 3 min read · [ipv4tradehub.hashnode.dev](https://ipv4tradehub.hashnode.dev/the-undead-protocol-why-ipv4-still-runs-the-internet?utm_source=hashnode&utm_medium=feed) [connect](https://hashnode.com/@ipv4tradehub) · [Aug 28](https://hashnode.com/posts/why-ipv4-is-usefull-in-today-s-digital-world/6a917a2d862ff610f95f5cda) ### [Why IPv4 Is Usefull In Today's Digital World ?](https://ipv4tradehub.hashnode.dev/why-ipv4-is-usefull-in-today-s-digital-world?utm_source=hashnode&utm_medium=feed) Why IPv4 Remains Essential in Modern Networking? 2 min read · [ipv4tradehub.hashnode.dev](https://ipv4tradehub.hashnode.dev/why-ipv4-is-usefull-in-today-s-digital-world?utm_source=hashnode&utm_medium=feed)