Yes. You can verify any @Optimum.net address in real time with a direct SMTP handshake that provides 99.7% accuracy. Optimum.net is operated by Altice USA, runs 1 mail server, 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.
optimum.net publishes 1 MX record. The primary mail exchanger is mx.altice.prod.cloud.openwave.ai, hosted by openwave.ai, 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 | mx.altice.prod.cloud.openwave.ai | 66.179.105.18 | Reachable |
220 altprdrgi004.altice.prod.cloud.openwave.ai ESMTP Service readyYes. optimum.net is a valid email domain, operated by Altice USA. 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 Optimum.net'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 optimum.net mailboxes before you mail them.
Mistyped optimum.net 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 optimum.net addresses raises every rate that matters: opens, clicks, and replies.
Optimum.net is Altice USA, registered through GoDaddy.com, LLC and first seen Jun 19, 1994.
optimum.net is a U.S. ISP domain from Optimum, the consumer brand of Altice USA. Based in Long Island City, NY, Optimum provides broadband, TV, and phone services primarily in the New York tri-state area and other select markets.
optimum.net implements SPF authentication. Altice maintains anti-spam filtering for its subscriber base.
The mail servers validate recipients and reject invalid addresses. The domain does not operate as catch-all.
For delivery, authenticate with SPF. Follow CAN-SPAM requirements.
Upload a CSV or TXT list of Optimum.net 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 Optimum.net 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, optimum.net is a valid email domain provided by Altice USA to its internet service subscribers.
No, optimum.net is an ISP email domain from Altice USA, provided to subscribers as part of their internet service package.
optimum.net uses mail servers operated by Altice USA. Check the MX records section above for details.
Yes, with opt-in consent. ISP email addresses may become inactive if the subscriber cancels service. Regular list verification helps maintain deliverability.
ISP email addresses at optimum.net can be verified via SMTP checks. Addresses can become invalid when subscribers change providers.
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 optimum.net's mail servers, the same engine that has verified billions of addresses since 2012.
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