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Illustration showing the DNS root zone directing queries to TLD nameservers and authoritative DNS servers through globally distributed root servers.
DNS

What is the DNS Root Zone and How Does It Work?

The DNS root zone is the top of DNS hierarchy, listing every TLD's nameservers. It's hosted on 13 named root server identities (A-M), which Anycast routing expands into over 2,000 physical instances worldwide. IANA maintains the file; the root has never suffered a complete outage, even under major DDoS attacks.

Illustration showing domain hacks created by combining word fragments with domain extensions such as .ly and .am.
Domain Name Search

What is a Domain Hack? Creative TLD Branding Explained

A domain hack spells a word using the domain plus extension together, like bit.ly or instagr.am. Popular ccTLD targets include .ly, .me, .io, and .to, but each carries real geopolitical risk: Libya seized vb.ly in 2010, and .io itself faces long-term uncertainty following the UK's 2024 Chagos Islands sovereignty transfer to Mauritius.

Illustration showing a domain owner defending against reverse domain name hijacking using registration history and evidence of legitimate use.
Domain Name Search

How to Defend Against Reverse Domain Name Hijacking (RDNH)

Defend against RDNH by proving your domain predates the complainant's trademark, the chronological defense a February 2026 panel decision confirmed as decisive. Respond within roughly 20 days, request an RDNH finding if the complaint was abusive, and know that registrars remain neutral, implementing panel decisions rather than deciding disputes themselves.

Illustration comparing CVCV four-letter domains based on pronunciation, letter quality, repeating patterns, and brandability.
Domain Name Search

How to Value CVCV (Consonant-Vowel) Brandable Domains

CVCV domains alternate consonants and vowels for natural pronounceability across languages. Value depends on premium letter usage (roughly 6,084 premium-only combinations exist), avoiding difficult letters like Q, X, Z, and whether the pattern repeats (Momo, Lulu). A real CVCV sale, Kipi.com, brought $11,100 at auction.

Illustration comparing a low first-year domain promotion with a higher renewal price in the following year.
Domain Name Search

Why Domain Renewal Prices Are Higher Than Promos

Many registrars sell first-year domains below the actual Verisign wholesale cost, then recover the loss with inflated renewal pricing. NameSilo doesn't run loss-leader promos; discounted pricing only reflects a temporary registry-level rate passed through directly, with standard renewal pricing matching registration and the Discount Program applying equally to both.

Illustration showing a branded email tracking subdomain connected to an email platform through a DNS CNAME record and secured with HTTPS.
Domain Name Search

How to Authenticate Subdomain Email Tracking Links

Set up a custom email tracking subdomain via CNAME to replace your platform's generic, shared tracking links with your own branded domain. For HTTPS, add the SSL validation records too, not just the tracking CNAME. This closes a link-mismatch gap flagged by anti-phishing heuristics, separate from DMARC, which only evaluates the From header against SPF/DKIM.

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