Domain Intelligence
Last Updated:
Cablevision.com
Safe to Send
Cablevision.com is operated by Altice USA. The domain runs 1 mail exchange and SMTP is responsive, with all three authentication standards in force.
Safe to Send
RISK
15
/100
Low
Verify Mailbox
Verify @cablevision.com emails
Live SMTP handshake against cablevision.com 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
We had a sender reputation crisis after a list import went badly. Used the bulk verifier to scrub everything, then plugged the API into our signup form. Took deliverability from 73% to 96% over six weeks. Sarah Knowles · Email Marketing Lead
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
1
Mail exchangers
Mail Exchange (MX) Records for cablevision.com 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
cablevision-com.mail.protection.outlook.com 52.101.8.46
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 BL6PEPF0001AB51.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Mon, 11 May 2026 07:10:54 +0000 [08DEADC7C9C861DA]
Primary mail server accepted SMTP connection and returned a banner during the live audit.
cablevision.com 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 a ip4:167.206.119.150 ip4:167.206.119.151 ip4:167.206.112.38 ip4:66.76.203.77 include:spf.protection.outlook.com ~all
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.
Pass
SELECTORDetected via standard selectors
A DKIM signature was detected. Outbound mail from this domain can be cryptographically verified.
DMARC
Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject.
None
TXTv=DMARC1; p=none; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com
Monitoring only. Receivers take no action when SPF or DKIM fails.
cablevision.com Domain Registration WHOIS · Nameservers · Registrar
RegistrarGoDaddy.com, LLC
IANA ID146
RegisteredSeptember 29, 1993
Last UpdatedSeptember 29, 2025
ExpiresSeptember 28, 2027
Age32 years
TLD.com
Authoritative Nameservers (2)
- AUTHNS1.CV.NET
- AUTHNS1.CVNET.COM
Registrant
Hidden by registrar privacy service
Technical Contact
Hidden by registrar privacy service
About this Domain
About cablevision.com
cablevision.com is a U.S. ISP email domain from Cablevision, a former cable TV and broadband provider in the New York metropolitan area now part of Altice USA. Legacy cablevision.com addresses continue through Altice infrastructure.
cablevision.com operates through Altice USA's email infrastructure with SPF authentication.
The cablevision.com mail servers validate recipients and reject invalid addresses. The domain does not function as catch-all.
For delivery to cablevision.com, authenticate with SPF and DKIM. Follow standard ISP deliverability practices.
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Common Questions About cablevision.com
Is cablevision.com a disposable or temporary email provider?
No. cablevision.com is not a disposable email provider. It is classified as ISP Email Provider operated by Altice USA and addresses on cablevision.com are persistent rather than throwaway. Mail sent to a valid cablevision.com mailbox reaches a real recipient.
How do I verify if a cablevision.com email address is valid?
The fastest way to verify a cablevision.com email address is to use our free email checker. Enter any @cablevision.com mailbox at the top of this page and our system performs a real-time SMTP handshake against cablevision.com'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 cablevision.com email exists without sending a message?
Yes. Our real-time email verification API connects directly to cablevision.com'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 cablevision.com mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for cablevision.com?
cablevision.com currently publishes 1 mail exchange (MX) record. The primary MX is cablevision-com.mail.protection.outlook.com, which is the first server contacted when other mail systems try to deliver email to a cablevision.com 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 cablevision.com.
Does cablevision.com use SPF, DKIM, and DMARC email authentication?
cablevision.com enforces all three email authentication standards: SPF, DKIM, and DMARC (policy: none). This is the gold-standard configuration. It means receivers can verify that mail claiming to come from @cablevision.com is genuine, and cablevision.com's DMARC policy of 'none' instructs receivers how to handle messages that fail those checks.
Why do emails to cablevision.com bounce or get blocked?
Bounces from cablevision.com 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 cablevision.com'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 cablevision.com's receivers trust you.
How can I verify a large list of cablevision.com email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of cablevision.com addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, cablevision.com 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 cablevision.com email addresses?
Yes, with normal hygiene. cablevision.com is a legitimate email service and signups from @cablevision.com 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 cablevision.com by default.
What email format does cablevision.com use for usernames?
Most cablevision.com mailboxes follow common patterns like first.last@cablevision.com, firstinitiallast@cablevision.com, or first@cablevision.com, but the actual local-part rules depend on Altice USA. The only reliable way to confirm whether a specific @cablevision.com 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 cablevision.com risk score calculated?
The 0-to-100 risk score for cablevision.com 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 cablevision.com score is recomputed on every audit so it always reflects the live state of the domain.
Is cablevision.com a valid ISP email domain?
Yes, cablevision.com is a valid email domain provided by Altice USA to its internet subscribers. It is a legitimate ISP-issued email address.
Is cablevision.com a disposable or temporary email provider?
No, cablevision.com is not a disposable or temporary email provider. It is an ISP-provided email service tied to an internet subscription from Altice USA.
What mail server does cablevision.com use?
cablevision.com uses mail servers operated by Altice USA. Check the MX records section above for specific server details and authentication configuration.
Can I send marketing emails to cablevision.com addresses?
Yes, you can send marketing emails to cablevision.com addresses with proper opt-in consent. ISP email providers apply spam filtering, and addresses may become inactive if subscribers cancel their internet service. Regular list verification is recommended.
How do I verify an email address at cablevision.com?
Use BulkEmailChecker to verify cablevision.com addresses via SMTP checks. ISP domains may have specific rate limiting or greylisting behaviors. Our tool handles these provider-specific configurations automatically.