.online: the broad Radix flagship and its reputation problem

Operator and ownership history

• RegistryRadix Technologies Inc. SEZC (as of the IANA record)
• Delegated16 March 2015
• Original holderDotOnline Inc.
• EligibilityOpen

IANA reports .online as delegated to DotOnline Inc. on 16 March 2015. The record shows two later administrative moves inside the Radix group: to Radix FZC in August 2021 and to Radix Technologies Inc. in February 2024. Radix is a registry company that built a portfolio of generic words, and .online was its most prominent launch. IANA lists Tucows as the technical contact. Because the entity names changed twice, older articles may name a different Radix company; the group is the same.

Why such a generic word works

"Online" describes nothing and everything. A bakery with delivery, a coding course, a freelancer's portfolio and a game server can all sit comfortably at example.online. Marketers like that it reads naturally in a sentence: "find us online". Many real brands use it for the web-only branch of a business, for example a training arm or an e-learning offer.

Restrictions

None for registrants. Anyone can register any available name, and the registry does not review content in advance. It runs the usual sunrise, trademark claims and premium mechanics, and it does act on abuse reports after the fact. Check with your registrar about transfer lock and privacy defaults.

Reputation, with named sources

.online turns up repeatedly in Spamhaus's public rankings of TLDs by listed domains. In a Spamhaus table covering part of 2025, as summarised in public coverage, .online sat in the top five gTLDs, and earlier Spamhaus tables placed it around sixth. A Spamhaus research piece on cybercrime supply chains also named it alongside four other new TLDs for disproportionate numbers of reported domains. Separately, CybercrimeInfoCenter's spam-activity tables for mid-2023 listed it near the top for malicious spam domains.

Two points keep this in proportion. Rankings by raw count favour large zones; a TLD with millions of registrations will show more bad domains than a small one. And a clean business on .online is not guilty by association, though its newsletters may meet stricter filters. If you receive a link on an .online domain from an unknown sender, treat it as you would any new-gTLD link and see lookalike domain risks.

Price behaviour

Radix has historically sold through registrars with aggressive first-year promotions, often far below the renewal rate, sometimes tied to bundles. The pattern worth knowing: promo price in year one, a multiple of that at renewal, premium names priced separately. Compare registrars on the second-year cost and on whether privacy and DNS are bundled, then read budget new gTLDs compared.

Where .online fits

Reasonable choices

• A web-only brand whose .com is held by someone else
• Landing pages and course or event sites
• Side projects where cost matters

Poor fits

• A primary brand in markets where users trust only .com or a ccTLD
• Email-heavy businesses with no budget for deliverability setup

Spotting available names

Because the zone is large and churns daily, drops happen constantly. Newly registered domain lists show what is being taken in a given TLD, while a name that vanishes from the zone has left delegation, usually by deletion. Zone files say nothing about owner, price or traffic, so verify at a registrar.

Checking an .online domain before you trust or buy it

A quick routine saves trouble. First, look at the name itself: does it imitate a known brand with a word added, such as a product name plus a hyphen? Lookalikes are common on every cheap open extension. Second, look up registration details through WHOIS or RDAP; many registrants use privacy services, so a hidden owner is normal and not itself a warning sign, but a registration created days ago advertising a major brand is. Third, if you plan to buy a previously used name, check whether it ever hosted spam, since blocklists can outlive a registration.

For site owners, the reverse applies. Publish a clear contact page, use HTTPS, authenticate mail and keep a stable nameserver setup, which is covered in DNS and nameserver providers. These steps matter more on an extension that filters treat cautiously.

Why a large zone matters for the data

.online has been one of the larger new-gTLD zones, so its zone file changes by many names a day. Both new registrations and removals are frequent. A name that disappears has left the delegation, which usually means deletion, though suspensions can look identical in a zone file. That is why a drop list is a lead rather than a guarantee, and why an expired domain list should be confirmed at the registrar.

Frequently asked questions

Who is the registry for .online?

Radix Technologies Inc. SEZC is the manager shown in the IANA record, after earlier transfers within the Radix group in 2021 and 2024. The delegation itself dates from March 2015.

Is .online a safe extension?

The extension is not unsafe by design, but Spamhaus rankings have repeatedly listed it among heavily abused gTLDs, so mail filters and cautious users may scrutinise it.

Do I need to be an online business to register one?

No. There is no eligibility requirement; anyone can register an available name.

Will .online hurt SEO?

No. Search engines treat it as a generic TLD. A site is judged on content and links, not on a new-gTLD suffix.

Why is my .online renewal higher than I paid?

First-year discounts are common on this extension. Renewals usually revert to a higher rate, so check the second-year price before registering.

How does it differ from .site?

Both are open Radix extensions delegated in March 2015. See the .site guide for the catch-all angle.