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The SEO Practitioner Guide to TLDs & Domain Extensions
Practitioner-grade guides across 28 topics in the TLDs / Domain Extensions hub. 28 of 28 live; 0 on the way. Each guide is researched against the live search results and written for SEO professionals and aged-domain buyers.
All 28 Guides in This Hub
28 live, 0 on the way.
TLDs / Domain Extensions
01
Top level domains: what a TLD is in a domain name, its types, and the governance behind it
What a TLD (top-level domain) is, where it sits in a domain name, the gTLD/ccTLD/sTLD types, who governs them, and what the TLD signals for SEO.
Read article → TLDs / Domain Extensions 02Domain extensions list: Every TLD type and what each one signals
A complete, IANA-sourced domain extensions list grouped by type, with a searchable reference table, the registry operator behind each TLD, and what each signals to users, search, and the resale market
Read article → TLDs / Domain Extensions 03gTLD vs ccTLD: How the two domain extension families differ on eligibility, geo-targeting, and aftermarket value
How generic and country-code top-level domains differ on eligibility, geo-targeting and international SEO, governance, and aged-domain aftermarket value.
Read article → TLDs / Domain Extensions 04The new gTLD program explained: How ICANN created hundreds of domain extensions
How ICANN’s new gTLD program created hundreds of extensions, the 2012 round and 2026 next round, the adoption reality, and which new gTLDs carry real value versus hype.
Read article → TLDs / Domain Extensions 05Domain extensions list for SEO: does your extension affect rankings, with the data and the aged-domain nuance
A data-backed answer on whether TLD choice affects rankings: direct signal vs indirect trust, CTR, spam-flag risk, and the aged-domain nuance.
Read article → TLDs / Domain Extensions 06Best TLD for SEO: How to choose the right domain extension
Which extension to pick for SEO, the evidence behind .com’s edge, when alternatives are fine, and how TLD interacts with an aged domain’s equity.
Read article → TLDs / Domain Extensions 07TLD value and resale tiers: Which domain extension holds value
A TLD-by-TLD ranking of resale liquidity and SEO value into six sourced tiers, from the .com gold standard to tech-premium .io/.ai to speculative new gTLDs.
Read article → TLDs / Domain Extensions 08TLDs and aged-domain value: Which extensions retain SEO equity
Which TLDs best retain backlink equity, drop-catch demand, and re-registration value on expired and aged domains, read through the investor and acquisition lens.
Read article → TLDs / Domain Extensions 09New gTLD trust and spam risk: Which domain extension gets flagged
Which new gTLDs get flagged for spam and abuse in Spamhaus and Interisle data, why deliverability and trust suffer, and how a low-trust extension drags on a domain’s resale value.
Read article → TLDs / Domain Extensions 10ccTLD cc codes explained: country-code domain extensions and local SEO
What ccTLDs are, how IANA assigns them via ISO 3166-1, open vs restricted eligibility, geo-targeting and local-SEO mechanics, generic-used ccTLDs, and the aged-ccTLD local-authority lens.
Read article → TLDs / Domain Extensions 11ccTLD vs gTLD for international SEO: Which domain extension geo-targets better
ccTLD vs gTLD for international SEO: how a country-code domain geo-targets automatically, how a gTLD splits into subfolders or subdomains, where authority pools, the maintenance cost across markets, a
Read article → TLDs / Domain Extensions 12Is the AI country domain a real ccTLD? Reading .ai and aged country-code domains for local authority
How an aged country-code domain shortcuts local-market authority through the geo-signal plus inherited-trust mechanics, and how to vet aged ccTLDs before acquiring.
Read article → TLDs / Domain Extensions 13.io domain: Is it good for SEO, what it costs, and what it is worth
The .io extension explained: ccTLD technicality, SEO impact, real renewal cost, the Chagos sovereignty question, and .io resale and aged-domain value.
Read article → TLDs / Domain Extensions 14.ai domain: The AI extension explained, for SEO, cost, and resale
What a .ai domain is (the Anguilla ccTLD turned AI extension), how Google treats it for SEO, the 2-year cost and March 2026 price rise, and the .ai resale and aged-domain lens.
Read article → TLDs / Domain Extensions 15How to register co domain name: cost, SEO, and resale value
Is .co a credible .com alternative? Colombia ccTLD origin, generic-gTLD SEO treatment, trust perception, real renewal cost, notable .co users, and aged-.co resale value.
Read article → TLDs / Domain Extensions 16Register XYZ domain: cost, spam-reputation risk, and SEO before you buy a .xyz
The .xyz extension explained through sourced data: what it is (a 2014 new gTLD), the spam-reputation concern (Spamhaus, Interisle, APWG), how Google treats it for SEO, the cost, abc.xyz and notable us
Read article → TLDs / Domain Extensions 17.dev and .app domains: dev domain registration and the HTTPS-only rule explained
The .dev and .app extensions explained through sourced data: who runs them (Google Registry), how the HSTS preload list forces HTTPS with no opt-out, how Google treats them for SEO, the flat pricing,
Read article → TLDs / Domain Extensions 18Register me domain name: cost, SEO, and value for the .me extension
The .me extension for personal brands: Montenegro ccTLD origin, generic-gTLD SEO treatment, trust perception, real renewal cost, who builds on .me, and aged-.me resale value.
Read article → TLDs / Domain Extensions 19Register tech domain names: When a .tech, .online, or .store descriptive extension helps
When descriptive new gTLDs help, their trust trade-offs, pricing and renewals, and the resale reality.
Read article → TLDs / Domain Extensions 20Com vs net vs org: which domain extension (.com, .net, or .org) to choose
How .com, .net, and .org compare on trust, SEO, intended use, and resale value, with the aged-domain investor read on which legacy extension a name should carry.
Read article → TLDs / Domain Extensions 21com domain registration: why .com is still the default for trust, SEO, and resale
The .com extension explained: original gTLD status, Verisign registry and the 161M base, the trust and recall data, SEO read, pricing, when an alternative is OK, and aged-.com resale value.
Read article → TLDs / Domain Extensions 22Register net domain names: when the .net extension makes sense for SEO and value
When a .net domain makes sense: 1985 legacy gTLD origin, Verisign registry, generic-gTLD SEO treatment, trust perception vs .com, real cost, notable .net users, and aged-.net resale value.
Read article → TLDs / Domain Extensions 23Register org domain: who can, trust, and SEO for the .org extension
What a .org domain is, who can register one, the nonprofit trust signal, generic-gTLD SEO treatment, the 2019 PIR sale as a dated fact, real renewal cost, and aged-.org resale value.
Read article → TLDs / Domain Extensions 24Register info domain names: reputation, SEO, cost, and whether the .info extension is worth it
The .info extension explained through sourced data: what it is (a 2001 new gTLD on Identity Digital), the spam association and the 2008/2012 crackdowns, current Interisle abuse data, how Google treats
Read article → TLDs / Domain Extensions 25.biz domain: Is the extension worth it for SEO and business
The .biz extension explained through sourced data: what it is (a 2001 business gTLD run by GoDaddy Registry, ex-Neustar), its reputation/trust deficit (GrowthBadger 2.9/5, last of eight), how Google t
Read article → TLDs / Domain Extensions 26AI top-level domain: Is .ai a real TLD, how it sits in the DNS root, and what it is worth
Is .ai a top-level domain? Yes, .ai is the country-code TLD delegated to Anguilla in the DNS root, not a generic gTLD or a brand label. This guide places .ai in the TLD system, explains the ccTLD clas
Read article → TLDs / Domain Extensions 27Domain ext explained: What a domain extension is, the types, and what each one signals
A domain ext is the domain extension, the label after the final dot in a web address, formally the top-level domain (TLD). This guide defines the ext, shows an example, sorts the gTLD, ccTLD, sponsore
Read article → TLDs / Domain Extensions 28TLD Migration Decisions: When to Move Your Domain to a New Extension, and How to Do It Without Losing SEO
When a TLD migration is worth it, whether changing your extension hurts SEO, the ccTLD geo-targeting trap, the traffic dip and recovery, and the clean domain to land on.
Read article →Multi-metric screened catalogue for aged-domain acquisition
SEO Domains operates the curated marketplace with a 220,000+ pre-screened catalogue from $100 entry-level domains through $1.5 million premium acquisitions. Every listing shows Domain Authority, Domain Rating, Trust Flow, Citation Flow, and the catalogue’s 7-vector inheritance screen status. ICANN-accredited transfer applies to every acquisition.
