Domain Intelligence
Last Updated:
Casema.nl
Safe to Send
Casema.nl is operated by Casema. The domain runs 2 mail exchanges and SMTP is responsive, with 2 of 3 authentication standards in place.
Safe to Send
RISK
22
/100
Low
Verify Mailbox
Verify @casema.nl emails
Live SMTP handshake against casema.nl mail servers. No email is sent. 10 free per day, no signup.
Trusted by 400,000+ senders
4.9/5
From 8,500+ verified reviews
Disposable detection is the strongest I've tested. We were drowning in fake signups before integration. Fraudulent account creation dropped roughly 80% in the first 10 days. Risk score on the lookup pages helps our analysts triage faster too. Elena Reyes · Trust & Safety, Fintech
SOC 2 Type II
GDPR
CCPA
99.7% Accuracy
Disposable
No
Persistent addresses, not throwaway
SMTP Live
Yes
Mail server responds to SMTP handshake
MX Records
2
Mail exchangers
Mail Exchange (MX) Records for casema.nl Mail Exchange records. They tell other mail servers which hosts are responsible for receiving email at this domain, in priority order. Lower priority numbers are tried first.
#5
mxin5.ziggo.nl 84.116.73.35
Reachable
#10
mxin10.ziggo.nl 84.116.6.2
Reachable
SMTP Handshake
Simple Mail Transfer Protocol. We open a live SMTP connection to the primary MX and read the greeting banner. A response confirms the mail server is alive and accepting connections.
Responsive
BANNER220 mx3-prd-nl2-vfz.nl2.unified.services.edge.unified.services mx3-prd-nl2-vfz.nl2.unified.services.edge.unified.services ESMTP server ready
Primary mail server accepted SMTP connection and returned a banner during the live audit.
casema.nl Email Authentication SPF · DKIM · DMARC
SPF
Sender Policy Framework. A DNS record listing which servers are allowed to send mail for this domain. Receivers reject or flag mail from unauthorized servers.
Pass
TXTv=spf1 redirect=smtp.spf.ziggo.nl
Authorized senders are defined and pass SPF policy.
DKIM
DomainKeys Identified Mail. The sending server cryptographically signs outbound mail with a private key, and receivers verify the signature using a public key in DNS.
Missing
No DKIM signature detected on common selectors for casema.nl.
No DKIM signature was detected. Receivers cannot verify the integrity of outbound mail.
DMARC
Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject.
Reject
TXTv=DMARC1; p=reject; sp=reject; rua=mailto:jn2qdxcl@ag.eu.dmarcadvisor.com,mailto:dmarc@inbound.mail.ziggo.com; ruf=mailto:jn2qdxcl@fr.eu.dmarcadvisor.com,mailto:dmarc@inbound.mail.ziggo.com;fo=1; adkim=s; aspf=s;
Strict policy. Receivers are instructed to reject any mail that fails SPF or DKIM. The strongest available setting.
casema.nl Domain Registration WHOIS · Nameservers · Registrar
RegistrarLiberty Global Technology Services BV
IANA ID3979
RegisteredDecember 14, 1994
Last UpdatedOctober 13, 2022
Age31 years
TLD.nl
Authoritative Nameservers (3)
- ns2.upc.biz
- ns3.upc.biz
- ns1.upc.biz
About this Domain
About casema.nl
casema.nl is the email domain for Casema, a former Dutch cable television and internet service provider. Casema was acquired by Ziggo and later merged into VodafoneZiggo, one of the Netherlands' largest telecom providers. Legacy casema.nl email accounts continue to be maintained for existing subscribers.
casema.nl supports SPF authentication through the VodafoneZiggo infrastructure. DKIM and DMARC configurations are maintained at standard levels. Proper authentication alignment is important for delivery to casema.nl mailboxes.
The casema.nl mail servers, now managed by VodafoneZiggo, perform recipient validation during SMTP sessions. Anti-spam filtering includes reputation checks, content analysis, and authentication evaluation consistent with VodafoneZiggo standards.
For delivery to casema.nl, authenticate with SPF and DKIM, maintain clean lists, and comply with Dutch and EU regulations including GDPR. Delivery practices that work for VodafoneZiggo domains generally apply to casema.nl as well.
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Common Questions About casema.nl
Is casema.nl a disposable or temporary email provider?
No. casema.nl is not a disposable email provider. It is classified as ISP Email Provider operated by Casema and addresses on casema.nl are persistent rather than throwaway. Mail sent to a valid casema.nl mailbox reaches a real recipient.
How do I verify if a casema.nl email address is valid?
The fastest way to verify a casema.nl email address is to use our free email checker. Enter any @casema.nl mailbox at the top of this page and our system performs a real-time SMTP handshake against casema.nl's mail servers, confirming whether the mailbox exists, is reachable, and is safe to send to. No email is ever delivered during the check.
Can I check if a casema.nl email exists without sending a message?
Yes. Our real-time email verification API connects directly to casema.nl's mail server, opens an SMTP session, and queries the mailbox using the RCPT TO command without ever transmitting an actual email. The server's response confirms whether the casema.nl mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for casema.nl?
casema.nl currently publishes 2 mail exchange (MX) records. The primary MX is mxin5.ziggo.nl, which is the first server contacted when other mail systems try to deliver email to a casema.nl address. The full list with priorities and IP addresses is in the MX Records panel above. MX records tell sending servers where to route email for casema.nl.
Does casema.nl use SPF, DKIM, and DMARC email authentication?
casema.nl has 2 of the 3 standard email authentication records in place: SPF, and DMARC (policy: reject). Adding the missing layer(s) would tighten anti-spoofing protection and improve deliverability for legitimate casema.nl mail.
Why do emails to casema.nl bounce or get blocked?
Bounces from casema.nl usually fall into three buckets: the mailbox doesn't exist (5xx user unknown), the inbox is full, or your sending domain isn't authenticated to casema.nl's satisfaction. The fastest fix is to run each address through a free email verifier before you send, and to make sure your own SPF, DKIM, and DMARC are configured correctly so casema.nl's receivers trust you.
How can I verify a large list of casema.nl email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of casema.nl addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, casema.nl catch-all detection, role-account detection, and disposable-domain matching. Results typically come back within minutes and previously-failed addresses on your blacklist are reprocessed for free. For continuous high-volume needs, see our unlimited email verification API.
Is it safe to accept signups from casema.nl email addresses?
Yes, with normal hygiene. casema.nl is a legitimate email service and signups from @casema.nl behave like any other real user. Pipe each address through a real-time email verifier API at the moment of signup to catch typos and dead mailboxes, but there is no need to block casema.nl by default.
What email format does casema.nl use for usernames?
Most casema.nl mailboxes follow common patterns like first.last@casema.nl, firstinitiallast@casema.nl, or first@casema.nl, but the actual local-part rules depend on Casema. The only reliable way to confirm whether a specific @casema.nl address exists is to run it through a free email verification tool. Guessing patterns will produce a high bounce rate and damage your sender reputation.
How is the casema.nl risk score calculated?
The 0-to-100 risk score for casema.nl combines disposable-domain classification, mail-server reachability, MX record presence and depth, SPF / DKIM / DMARC enforcement, DMARC policy strength, SMTP banner response, and domain age. Lower scores mean safer to send to. Disposable domains are pinned at the high end of the scale. The casema.nl score is recomputed on every audit so it always reflects the live state of the domain.
Is casema.nl a valid email domain?
Yes, casema.nl is a valid email domain originally operated by Casema, now maintained by VodafoneZiggo. Legacy email accounts remain active for existing Dutch subscribers.
Is casema.nl a disposable or temporary email service?
No, casema.nl is not a disposable or temporary email service. It is a permanent ISP email domain with legacy accounts maintained by VodafoneZiggo for former Casema subscribers in the Netherlands.
What mail servers does casema.nl use?
casema.nl uses mail servers managed by VodafoneZiggo infrastructure. The MX records direct inbound email to VodafoneZiggo-operated gateways for filtering and delivery to legacy Casema mailboxes.
Can I send marketing emails to casema.nl addresses?
You can send marketing emails to casema.nl addresses with valid opt-in consent. Authenticate with SPF and DKIM, comply with Dutch telecom regulations and GDPR, and honor unsubscribe requests.
How do I verify a casema.nl email address?
You can verify a casema.nl email address using an email verification tool that checks MX records and performs SMTP-level validation to confirm the mailbox is active and deliverable.