ZXCS (NL gateway) email service provider (ESP)
According to Live Direct Marketing's daily Tranco top-1M scan (September 14, 2026), ZXCS (NL gateway) is the email service provider (ESP) for 213 domains — 0.03% of 637,677 SPF-publishing domains. Detection method: include: mechanisms in the SPF record.
Key facts
- 213 domains in the Tranco top-1M use ZXCS (NL gateway) (0.03% of SPF-publishing domains).
- Snapshot date: 2026-09-14 — recomputed every day.
- Strongest TLD: .nl (53.1% of its domains).
- Region skew: Netherlands.
- Most co-used service: Self-Hosted.
- Directory category: email security gateway.
Why ZXCS (NL gateway) appears in this category
Dutch Stichting DIGI NL spam filter.
We classify it as a email security gateway 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.
ZXCS (NL gateway) is a Netherlands-based email gateway service operating primarily as an outbound relay, detected across web infrastructure via SPF include mechanisms.
Its user base concentrates among smaller websites in the .nl domain space, often operating in tandem with self-hosted email systems. For email practitioners, ZXCS's regional footprint and shared-gateway model mean its IP reputation and authentication posture directly influence deliverability for any sender or receiver using it.
Where ZXCS (NL gateway) 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 | 0 | 0.0% |
| Top 1,000,000 | 206 | 96.7% |
| Unranked | 7 | 3.3% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .nl | 113 | 53.1% | |
| .com | 44 | 20.7% | |
| .be | 13 | 6.1% | |
| .net | 10 | 4.7% | |
| .org | 8 | 3.8% | |
| .eu | 6 | 2.8% | |
| .de | 4 | 1.9% | |
| .info | 2 | 0.9% | |
| .co.uk | 2 | 0.9% | |
| .amsterdam | 1 | 0.5% |
What ZXCS (NL gateway) users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 213 domains.
| Type | Service | Domains | Share of ZXCS (NL gateway) users |
|---|---|---|---|
| Mailbox | Self-Hosted | 106 | 49.8% |
| Mailbox | ZXCS (NL gateway) | 55 | 25.8% |
| Mailbox | Microsoft 365 | 23 | 10.8% |
| Mailbox | Google Workspace | 20 | 9.4% |
| Mailbox | Unknown / Other | 3 | 1.4% |
| Mailbox | Generic / unmatched (mail.*) | 2 | 0.9% |
| ESP | Mailgun | 17 | 8.0% |
| ESP | Mailchimp | 6 | 2.8% |
| ESP | SendGrid (Twilio) | 6 | 2.8% |
| ESP | Zendesk | 3 | 1.4% |
Shared gateway IP reputation and SPF coupling
ZXCS is commonly identified through SPF includes that route mail via its gateway IP blocks. Because the gateway is shared across many senders, poor practices or abuse by other customers can degrade reputation for all users of that IP space, potentially affecting your deliverability even if your sending practices are sound. Monitor ZXCS IP reputation independently, maintain DMARC alignment to authenticate your domain rather than relying on gateway identity, and be aware that shared infrastructure introduces reputation risk beyond your direct control.
See the full ZXCS (NL gateway) data page (KPI cards, trend, sample domains) →
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Frequently asked questions
Is ZXCS (NL gateway) a major email provider I should test against?
ZXCS serves a regional, smaller-site audience in the Netherlands and long tail rather than major global brands, so it is not a critical testing target for broad deliverability. However, if your sending or receiving infrastructure involves ZXCS, you should test mail authentication and monitor its IP reputation.
How many domains use ZXCS (NL gateway)?
213 domains in the Tranco top-1M use ZXCS (NL gateway) as their email service provider (ESP) as of September 14, 2026 (0.03% of SPF-publishing domains), according to Live Direct Marketing's daily DNS scan.
Is ZXCS (NL gateway) common enough to affect email deliverability testing?
ZXCS (NL gateway) accounts for 0.03% 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 ZXCS (NL gateway) most?
ZXCS (NL gateway)'s largest TLD is .nl (53.1% of its domains); it appears across 20 TLDs in total.