What Is the .is Domain? Iceland's ccTLD for Brand Hacks

The .is domain is the country-code top-level domain for Iceland, and it has built an outsized reputation for something Iceland never planned: domain hacks. Because "is" is a common English word ending, brands worldwide register .is names to spell out a phrase across the dot — the WHOIS lookup tool who.is and the URL-shortening service this.is are both live, working products built entirely around the trick. This page covers what .is is, who runs it, the rules for registering, and how Google treats it — so you can judge whether the hack is worth it for your project.

.is at a glance

What is .is?

.is is the ccTLD assigned to Iceland under the ISO 3166-1 country-code system. It is managed by ISNIC — Internet á Íslandi hf., a Reykjavík-based company, as confirmed in the IANA root-zone database entry for .is. ISNIC is a for-profit company, not a government agency or nonprofit — it operates the registry under an agreement with IANA/ICANN following RFC 1591 and ICP-1, the standard framework for ccTLD delegations.

Because .is is a ccTLD tied to a specific country, Google's own guidance explains that country-code domains "provide a strong signal to both users and search engines that your site is explicitly intended for a certain country". Google maintains a short list of ccTLDs it treats as generic instead — .ad, .ai, .as, .bz, .cc, .cd, .co, .dj, .fm, .io, .la, .me, .ms, .nu, .sc, .sr, .su, .tv, .tk, .ws — and .is is not on it. In practice a .is site is geo-targeted toward Iceland by default, which matters for anyone chasing global rankings rather than a wordplay domain used purely for direct traffic.

History of .is

ISNIC's own account of its history states that the .is namespace was delegated to SURIS in 1988 by IANA, after Iceland's early internet infrastructure had been run informally since 1986 by the SURIS and ICEUNET networks. ISNIC itself was formally established as a company in 1995 to take over day-to-day management, and the earliest registered names included hi.is (University of Iceland), os.is, and hafro.is.

Registrations happen directly at the second level (yourname.is), with a handful of names reserved for institutional use: net.is, com.is, edu.is, gov.is, org.is, and int.is. Over the following decades, .is grew steadily as an open, low-friction namespace, and by the 2010s the tech world had discovered its value for word-completing domain hacks — the biggest driver of .is registrations from outside Iceland.

How people use .is

Real, specific niches where .is shows up:

• Domain hacks that complete an English word — the defining use case, exemplified by who.is and this.is.
• Icelandic businesses, media, and government-adjacent sites, for whom .is is the natural national identity, much like .us is for American organizations.
• URL-shortening and link-branding services that lean on the short, two-letter suffix.
• Icelandic-language content using ISNIC's supported Icelandic characters (þ, æ, ö, ð) for names that need them.

Who it's not ideal for: projects with no natural ".is" wordplay and no Icelandic connection, since the geo-targeting signal works against a name chosen purely for its short length.

Notable sites using .is

• who.is — a WHOIS and RDAP domain-lookup tool whose name is a literal question, "who is [this domain]," completed by the .is suffix.
• this.is — a URL-shortening and custom-link service built entirely around the "this.is/yourname" wordplay, actively marketed and maintained as of 2026.
• hi.is — the University of Iceland's own domain, one of the first .is registrations and still in use by Iceland's national academic institution.

.is vs other domains

Choose .io or .co when you want a hack-friendly ccTLD that Google won't geo-target; pick .is specifically when the "is" ending genuinely completes your word and Iceland-specific targeting is acceptable or irrelevant to your goals.

Why choose .is?

• Genuine wordplay value. Few suffixes complete as many natural English phrases as ".is" — "who is," "this is," and similar constructions read instantly.
• No gatekeeping. ISNIC's own rules confirm registration is open to any person or legal entity, with no residency requirement.
• Mature, stable registry. Delegated in 1988, ISNIC is one of the older ccTLD operators, with established DNSSEC and IDN support.
• Short and memorable. Two letters, easy to type, easy to say.

Things to consider

• Google geo-targets it by default. Unlike .io or .co, .is is not on Google's generic-ccTLD list, so a global brand may want to set international targeting deliberately rather than assume neutrality.
• Confusable with "IS" the acronym. Depending on your brand, the two-letter string can read as an abbreviation rather than as part of a phrase if the surrounding word doesn't land clearly.
• Icelandic character rules add nuance. If you want a name using þ, æ, ö, or ð, check ISNIC's exact character and length rules before you commit to a name.
• Smaller registrar footprint than mainstream ccTLDs. Fewer registrars carry .is compared with .io or .co, so shop around.

Who can register a .is domain?

Registration restrictions: open to all. ISNIC's official domain rules state that any person or legal entity may register a .is domain, and if someone registers on behalf of a rights holder, "that party shall have a clear mandate to bind the right holder" — but there is no citizenship, residency, or local-presence test for the registrant.

Every registration requires a designated administrative contact, who is authorized to manage the registration, and a technical contact; neither is required to be based in Iceland. IDN names may use the Icelandic letters á, é, ý, ú, í, ó, þ, æ, ö, and ð alongside standard ASCII letters, numerals, and hyphens — names using those extra characters have a maximum length of 59 characters versus 66 for ASCII-only names. DNSSEC is supported. Six second-level names are reserved for institutional use (net.is, com.is, edu.is, gov.is, org.is, int.is). The authoritative source for current eligibility and technical rules is ISNIC's domain rules page, the ccTLD manager's own policy, since ccTLDs like .is are not governed by an ICANN registry agreement.

.is pricing and value

.is pricing follows ISNIC's own fee schedule rather than a wholesale-plus-registrar-margin model typical of gTLDs, and ISNIC states that annual domain fees are generally non-refundable once paid. As with most TLDs, expect the mechanics to include an annual renewal fee distinct from any promotional first-registration rate a reseller might offer, and premium or short names (especially one- and two-character strings, where still available) can carry non-standard pricing set directly by ISNIC. This page intentionally quotes no figures — check current ISNIC or registrar pricing at the point of purchase.

Reputation and email deliverability

.is carries a neutral-to-positive reputation as a mature, well-governed ccTLD rather than a bargain-bin new gTLD associated with spam. ISNIC has a track record of acting against abuse on its namespace, and that governance history works in favor of legitimate .is registrants: the suffix itself is not commonly flagged by spam filters the way some ultra-cheap new gTLDs are.

For email deliverability specifically, sender reputation, SPF/DKIM/DMARC authentication, and list hygiene matter far more than the TLD itself. A properly authenticated .is domain should deliver normally.

Branding and naming tips

• Design the whole phrase, not just the domain. The best .is names read as a complete sentence or phrase the moment you say them aloud — "who is," "this is," "life is."
• Avoid forcing it. If your brand name doesn't naturally end in a word that pairs with "is," the hack can feel gimmicky rather than clever.
• Keep the second-level part short. Domain hacks lose their charm past a handful of characters; the shortest, punchiest options work best.
• Check Icelandic character availability separately if your name could use þ, æ, ö, or ð for a more authentic Icelandic identity.

How to register a .is domain

1. Search for your desired name and confirm it forms the phrase you want with the .is ending.
2. Choose the exact name and review ISNIC's registration terms.
3. Register and configure DNS to point your site or email.

Frequently asked questions

Can anyone register a .is domain?

Yes. ISNIC, the registry for Iceland, imposes no residency, citizenship, or local-presence requirement. Any person or legal entity anywhere in the world can register a .is domain directly through ISNIC or an accredited reseller.

Does a .is domain affect SEO?

Google does not list .is among the ccTLDs it treats as generic, so by default a .is site sends a strong signal that it targets Iceland. Sites using .is purely for its word-completing domain-hack value should account for that geo-targeting signal.

Who should register a .is domain?

It suits brands and tools that can form a real word or phrase by ending in "is" (who.is, this.is), plus anyone building for an Icelandic audience. It is a weaker choice for a global brand with no natural ".is" wordplay.

Does .is support internationalized domain names?

Yes. ISNIC allows the Icelandic letters á, é, ý, ú, í, ó, þ, æ, ö, and ð in addition to the standard ASCII alphabet, numerals, and hyphens, with a shorter maximum length for names using those extra characters.

Related resources

• Domain hacks explained
• What is a TLD?
• What is a domain?
• Glossary: ccTLD, domain hack, registrar, DNSSEC
• Compare TLDs: .io, .co, .me, .us

Sources and further reading

• who.is — who.is
• this.is — this.is
• isnic.is — ISNIC — Internet á Íslandi hf.
• IANA — IANA root-zone database entry for .is
• Google Search Central — developers.google.com
• isnic.is — official domain rules