Yes. You can verify any @Centrum.sk address in real time with a direct SMTP handshake that provides 99.7% accuracy. Centrum.sk is operated by Centrum Holdings Slovakia, runs 4 mail servers, enforces 2 of 3 authentication standards, and is currently responding to SMTP.
Every check returns one of three clear outcomes so you know exactly what to do with the address.
The mailbox exists and accepts mail. Send with confidence, the address is deliverable.
The mailbox does not exist, is disposable, or will hard-bounce. Remove it to protect your sender reputation.
The server is catch-all or greylisting, so existence cannot be confirmed. Send selectively and watch engagement.
centrum.sk publishes 4 MX records. The primary mail exchanger is nm-sk-10mx1.eco-mx.cz, hosted by eco-mx.cz, and it is currently reachable and answering SMTP. Mail is routed through these servers in priority order, lowest number first.
| Priority | Hostname | IP | Status |
|---|---|---|---|
| 10 | nm-sk-10mx1.eco-mx.cz | 46.255.225.8 | Reachable |
| 10 | nm-sk-10mx2.eco-mx.cz | 46.255.227.8 | Reachable |
| 20 | nm-sk-20mx1.eco-mx.cz | 46.255.227.8 | Reachable |
| 20 | nm-sk-20mx2.eco-mx.cz | 46.255.225.8 | Reachable |
220 antispam106.centrum.cz ESMTPYes. centrum.sk is a valid email provider, operated by Centrum Holdings Slovakia. Addresses are persistent and real mail reaches a genuine recipient. Individual mailboxes still go stale, so verify each one before you send.
A live SMTP handshake connects to Centrum.sk's mail server and asks whether the mailbox exists using the RCPT TO command, without ever transmitting a message. The recipient never sees the check.
Each address runs through 30+ checks including SMTP existence, catch-all detection, role-account filtering, and disposable matching. The same engine has verified billions of addresses since 2012.
Every unverified address is a gamble. Here is what happens when you skip verification and mail a list that has not been cleaned.
Free inboxes get abandoned constantly. Verification drops the dead centrum.sk mailboxes before you mail them.
Mistyped centrum.sk addresses fail a real SMTP check, so they never turn into a hard bounce.
A clean list keeps your bounce rate low, and a low bounce rate is what protects inbox placement on a big send.
Mailing only live centrum.sk addresses raises every rate that matters: opens, clicks, and replies.
Centrum.sk is Centrum Holdings Slovakia, registered through NEWS-0010 and first seen Jun 20, 2003.
centrum.sk is a Slovak email and web portal service operated by Centrum Holdings Slovakia, the Slovak branch of the Czech-based digital media company. The platform provides free email alongside news and internet services to Slovak-speaking users. Centrum.sk has been a recognized name in the Slovak online landscape since the early 2000s.
centrum.sk implements SPF authentication for outbound email validation, with DKIM and DMARC policies following the platform's infrastructure configuration. As a Slovak internet service, centrum.sk complies with EU data protection requirements (GDPR) and maintains anti-spam measures appropriate for the Slovak market.
The centrum.sk mail servers enforce recipient verification at the SMTP level, rejecting messages addressed to nonexistent accounts. The domain does not operate as a catch-all. Inbound rate limiting may apply, especially for connections from international IP addresses with limited sending history to Slovak email platforms.
For reliable delivery to centrum.sk recipients, configure SPF and DKIM authentication on your sending domain. Follow EU email marketing regulations and include proper unsubscribe mechanisms. Maintain clean mailing lists and process bounce notifications promptly to preserve good deliverability to Slovak email services.
Upload a CSV or TXT list of Centrum.sk addresses to the bulk email verifier. Every address runs through a live SMTP handshake plus catch-all, role-account and disposable detection, and you download a clean list when processing completes. For real-time checks at signup, use the real-time email verification API.
CSV or TXT with one email per line. No formatting needed.
Each Centrum.sk address is checked with a live server handshake.
Get a verified list with status codes, risk flags, and catch-all detection.
Pay as you go. No subscriptions, and credits never expire.
Everything about verifying email at this domain.
Yes, centrum.sk is a valid free email domain operated by Centrum Holdings Slovakia. It provides permanent email accounts to users.
No, centrum.sk is not a disposable or temporary email provider. It offers permanent email accounts with standard email features.
centrum.sk uses mail servers operated by Centrum Holdings Slovakia. Check the MX records section above for specific server details.
Yes, with proper opt-in consent. Follow email best practices and ensure SPF, DKIM, and DMARC authentication is configured for your sending domain.
Use BulkEmailChecker to verify centrum.sk addresses via SMTP checks. Verification behavior varies by provider. Our tool handles provider-specific rate limiting automatically.
Upload a CSV or TXT list to the bulk email verifier. Every address runs through 30+ checks including SMTP existence, catch-all detection, role-account, and disposable matching. Processing time depends on list size.
99.7% accurate using a direct SMTP handshake with centrum.sk's mail servers, the same engine that has verified billions of addresses since 2012.
Other free email provider domains we have audited.