One.com (DK hosting) SaaS sender
According to Live Direct Marketing's daily Tranco top-1M scan (September 24, 2026), One.com (DK hosting) is the SaaS sender for 307 domains — 0.05% of 637,420 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 307 domains in the Tranco top-1M use One.com (DK hosting) (0.05% of SPF-publishing domains).
- Snapshot date: 2026-09-24 — recomputed every day.
- Strongest TLD: .com (32.9% of its domains).
- Most co-used service: One.com mailpod.
- Directory category: mailbox provider.
Why One.com (DK hosting) appears in this category
Danish/European hosting (Group.ONE, _custspf.one.com).
We classify it as a mailbox provider from include: mechanisms in the SPF record matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
One.com is a Danish web hosting and domain management platform that provides email hosting and forwarding services as part of its product suite. The company operates email infrastructure primarily for smaller organisations and professionals who use its platform for domain registration, web hosting, and email services combined.
In email infrastructure analysis, One.com appears predominantly in the long tail of smaller and mid-sized organisations rather than among the largest global brands. Its footprint is internationally dispersed across many TLDs, with particular concentration in .com registrations, and it frequently appears in authentication records alongside Microsoft 365—a pattern indicating organisations that bundle email with hosted solutions rather than adopting specialist email systems. For deliverability professionals, this footprint signals a particular sender segment: decentralised, smaller-scale organisations using hosting-integrated email rather than dedicated enterprise platforms.
Where One.com (DK hosting) sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 1 | 0.3% |
| Top 100,000 | 6 | 2.0% |
| Top 1,000,000 | 295 | 96.1% |
| Unranked | 5 | 1.6% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 101 | 32.9% | |
| .dk | 47 | 15.3% | |
| .se | 40 | 13.0% | |
| .no | 30 | 9.8% | |
| .be | 21 | 6.8% | |
| .nl | 16 | 5.2% | |
| .co.uk | 11 | 3.6% | |
| .de | 9 | 2.9% | |
| .org | 6 | 2.0% | |
| .net | 5 | 1.6% |
What One.com (DK hosting) users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 307 domains.
| Type | Service | Domains | Share of One.com (DK hosting) users |
|---|---|---|---|
| Mailbox | One.com mailpod | 147 | 47.9% |
| Mailbox | Microsoft 365 | 74 | 24.1% |
| Mailbox | One.com (DK) | 31 | 10.1% |
| Mailbox | Google Workspace | 28 | 9.1% |
| Mailbox | Self-Hosted | 7 | 2.3% |
| Mailbox | Uniweb (NO) | 6 | 2.0% |
One.com in hybrid email and authentication configurations
One.com's presence in email infrastructure reflects its role as an email provider bundled within a hosting platform. Organisations using One.com's email services publish SPF includes referencing One.com's mail systems, permitting authentication of outbound mail. The typical deployment pattern involves One.com paired with other mail systems, particularly Microsoft 365, resulting in multi-system authentication chains. Understanding One.com's footprint is relevant for deliverability teams analysing SPF architectures and sender profiles across organisations that favour integrated, bundled email provision rather than dedicated specialist email services.
See the full One.com (DK hosting) data page (KPI cards, trend, sample domains) →
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Frequently asked questions
Why does One.com appear in my domain's SPF record?
One.com appears in your SPF record because you use its email hosting or forwarding service; its SPF includes permit mail sent through One.com's systems to authenticate as coming from your domain.
How many domains use One.com (DK hosting)?
307 domains in the Tranco top-1M use One.com (DK hosting) as their SaaS sender as of September 24, 2026 (0.05% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is One.com (DK hosting) common enough to affect email deliverability testing?
One.com (DK hosting) accounts for 0.05% of SPF-publishing domains in the top 1M. Whether you should seed a test mailbox there depends on how much of your audience it represents — the co-usage table above shows the services it appears alongside most.
Which countries or TLDs use One.com (DK hosting) most?
One.com (DK hosting)'s largest TLD is .com (32.9% of its domains); it appears across 25 TLDs in total.