Active24 (CZ/NO) mailbox provider
According to Live Direct Marketing's daily Tranco top-1M scan (September 11, 2026), Active24 (CZ/NO) is the mailbox provider for 30 domains — 0.00% of 666,213 domains with MX records. Detection method: primary MX record (lowest preference).
Key facts
- 30 domains in the Tranco top-1M use Active24 (CZ/NO) (0.00% of domains with MX records).
- Snapshot date: 2026-09-11 — recomputed every day.
- Strongest TLD: .cz (43.3% of its domains).
- Region skew: Czechia.
- Most co-used service: SparkPost.
- Directory category: hosting mail bundle.
Why Active24 (CZ/NO) appears in this category
Central-European hosting (Czech roots, Loopia/Ascio group).
We classify it as a hosting mail bundle from primary MX record (lowest preference) matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
Active24 is a Czech-based mailbox provider and domain registrar serving customers across Central Europe. The company focuses on regional email hosting and domain services rather than competing as a global platform.
Active24's position in the long tail of smaller, non-enterprise sites reflects its regional focus and customer profile. For email professionals, this footprint distribution means Active24-hosted domains are common within the .cz space but represent a smaller subset of overall internet traffic; testing and deliverability optimisation should be calibrated to your actual recipient geography rather than treated as a universal testing requirement.
Where Active24 (CZ/NO) sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 0 | 0.0% |
| Top 10,000 | 0 | 0.0% |
| Top 100,000 | 2 | 6.7% |
| Top 1,000,000 | 28 | 93.3% |
| Unranked | 0 | 0.0% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .cz | 13 | 43.3% | |
| .sk | 3 | 10.0% | |
| .com | 3 | 10.0% | |
| .eu | 2 | 6.7% | |
| .ro | 1 | 3.3% | |
| .es | 1 | 3.3% | |
| .co.uk | 1 | 3.3% | |
| .rs | 1 | 3.3% | |
| .hu | 1 | 3.3% | |
| .uk | 1 | 3.3% |
What Active24 (CZ/NO) users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 30 domains.
| Type | Service | Domains | Share of Active24 (CZ/NO) users |
|---|---|---|---|
| ESP | SparkPost | 3 | 10.0% |
| ESP | Mailkit | 1 | 3.3% |
| ESP | Proofpoint | 1 | 3.3% |
| ESP | Zendesk | 1 | 3.3% |
| ESP | Mailchimp | 1 | 3.3% |
| ESP | Mailjet (Sinch) | 1 | 3.3% |
| ESP | SendGrid (Twilio) | 1 | 3.3% |
| ESP | SmartEmailing | 1 | 3.3% |
| ESP | Heureka Mailing (CZ) | 1 | 3.3% |
Regional infrastructure and filtering implications
Active24's position as a regional provider serving smaller sites means its infrastructure and reputation management differ from global ESPs, with implications for how major mailbox operators assess authentication, reputation scoring, and filtering for traffic from its domains—particularly when targeting Czech and Central European recipients.
See the full Active24 (CZ/NO) data page (KPI cards, trend, sample domains) →
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Frequently asked questions
Should I test email deliverability against Active24 domains?
If your recipient base includes significant Czech or Central European populations, Active24 is worth including in your testing matrix; for predominantly global audiences, it represents a smaller regional provider and may be lower priority compared to major global mailbox operators.
How many domains use Active24 (CZ/NO)?
30 domains in the Tranco top-1M use Active24 (CZ/NO) as their mailbox provider as of September 11, 2026 (0.00% of domains with MX records), according to Live Direct Marketing's daily DNS scan.
Is Active24 (CZ/NO) common enough to affect email deliverability testing?
Active24 (CZ/NO) accounts for 0.00% of domains with MX records 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 Active24 (CZ/NO) most?
Active24 (CZ/NO)'s largest TLD is .cz (43.3% of its domains); it appears across 13 TLDs in total.