Domain Intelligence
Last Updated:
Nbcuniversal.com
Safe to Send
Nbcuniversal.com is operated by NBCUniversal. The domain runs 4 mail exchanges and SMTP is responsive, with 2 of 3 authentication standards in place.
Safe to Send
RISK
22
/100
Low
Verify Mailbox
Verify @nbcuniversal.com emails
Live SMTP handshake against nbcuniversal.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
Switched after a billing dispute with NeverBounce. Same SMTP results on a 5k test sample. The MX, SPF, DKIM lookup tools are a hidden value-add for debugging client deliverability complaints. James Wexler · Growth Engineer
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
4
Mail exchangers
Mail Exchange (MX) Records for nbcuniversal.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.
#10
mxa-00176a04.gslb.pphosted.com 67.231.149.53
Reachable
#10
mxb-00176a04.gslb.pphosted.com 67.231.149.53
Reachable
#20
mx0b-00176a04.pphosted.com 67.231.157.49
Reachable
#20
mx0a-00176a04.pphosted.com 67.231.149.53
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 mx0a-00176a04.pphosted.com ESMTP mfa-m0193507
Primary mail server accepted SMTP connection and returned a banner during the live audit.
nbcuniversal.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 include:%{ir}.%{v}.%{d}.spf.has.pphosted.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.
Missing
No DKIM signature detected on common selectors for nbcuniversal.com.
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.
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.
nbcuniversal.com Domain Registration WHOIS · Nameservers · Registrar
RegistrarMarkMonitor, Inc.
IANA ID292
RegisteredJune 29, 2003
Last UpdatedOctober 24, 2025
ExpiresJune 28, 2027
Age22 years
TLD.com
Authoritative Nameservers (6)
- a6-65.akam.net
- a5-64.akam.net
- a4-67.akam.net
- a11-65.akam.net
- a12-66.akam.net
- a1-202.akam.net
Registrant
NBCUniversal Media, LLC
UNITED STATES
Technical Contact
Hidden by registrar privacy service
About this Domain
About nbcuniversal.com
NBCUniversal (nbcuniversal.com) is a media and entertainment conglomerate owned by Comcast, headquartered in New York City. NBCUniversal operates the NBC broadcast network, Universal Pictures, Universal Studios theme parks, DreamWorks Animation, and the Peacock streaming service. The company is one of the largest media companies in the world.
NBCUniversal implements enterprise email authentication on the nbcuniversal.com domain with SPF, DKIM, and DMARC enforcement. As a major media conglomerate, NBCUniversal maintains robust email security to protect communications across its diverse business units spanning broadcast, film, streaming, and theme parks.
SMTP verification of nbcuniversal.com addresses returns definitive responses for valid and invalid mailboxes. The domain does not function as catch-all. NBCUniversal's enterprise mail infrastructure implements rate limiting on inbound SMTP connections.
For partners communicating with NBCUniversal employees, proper sender authentication is important. NBCUniversal's corporate email filters enforce SPF, DKIM, and DMARC validation. Authentication compliance ensures reliable inbox delivery to nbcuniversal.com addresses.
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More Email Verification Tools
Free single-address checks, bulk uploads, and APIs for plugging email verification into your own product.
Common Questions About nbcuniversal.com
Is nbcuniversal.com a disposable or temporary email provider?
No. nbcuniversal.com is not a disposable email provider. It is classified as Corporate Email operated by NBCUniversal and addresses on nbcuniversal.com are persistent rather than throwaway. Mail sent to a valid nbcuniversal.com mailbox reaches a real recipient.
How do I verify if a nbcuniversal.com email address is valid?
The fastest way to verify a nbcuniversal.com email address is to use our free email checker. Enter any @nbcuniversal.com mailbox at the top of this page and our system performs a real-time SMTP handshake against nbcuniversal.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 nbcuniversal.com email exists without sending a message?
Yes. Our real-time email verification API connects directly to nbcuniversal.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 nbcuniversal.com mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for nbcuniversal.com?
nbcuniversal.com currently publishes 4 mail exchange (MX) records. The primary MX is mxa-00176a04.gslb.pphosted.com, which is the first server contacted when other mail systems try to deliver email to a nbcuniversal.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 nbcuniversal.com.
Does nbcuniversal.com use SPF, DKIM, and DMARC email authentication?
nbcuniversal.com has 2 of the 3 standard email authentication records in place: SPF, and DMARC (policy: none). Adding the missing layer(s) would tighten anti-spoofing protection and improve deliverability for legitimate nbcuniversal.com mail.
Why do emails to nbcuniversal.com bounce or get blocked?
Bounces from nbcuniversal.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 nbcuniversal.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 nbcuniversal.com's receivers trust you.
How can I verify a large list of nbcuniversal.com email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of nbcuniversal.com addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, nbcuniversal.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 nbcuniversal.com email addresses?
Yes, with normal hygiene. nbcuniversal.com is a legitimate email service and signups from @nbcuniversal.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 nbcuniversal.com by default.
What email format does nbcuniversal.com use for usernames?
Most nbcuniversal.com mailboxes follow common patterns like first.last@nbcuniversal.com, firstinitiallast@nbcuniversal.com, or first@nbcuniversal.com, but the actual local-part rules depend on NBCUniversal. The only reliable way to confirm whether a specific @nbcuniversal.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 nbcuniversal.com risk score calculated?
The 0-to-100 risk score for nbcuniversal.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 nbcuniversal.com score is recomputed on every audit so it always reflects the live state of the domain.
Is nbcuniversal.com a valid email domain?
Yes, nbcuniversal.com is the official corporate email domain for NBCUniversal. It is used for internal business communications.
Is nbcuniversal.com a disposable or temporary email provider?
No, nbcuniversal.com is a corporate email domain belonging to NBCUniversal, used exclusively by employees and authorized personnel.
What mail server does nbcuniversal.com use?
nbcuniversal.com uses enterprise-grade mail infrastructure. Check the MX records section for specific mail server details.
Can I send marketing emails to nbcuniversal.com addresses?
B2B marketing to nbcuniversal.com requires proper consent. Corporate domains may use catch-all configurations, so verify individual addresses before sending.
How do I verify an email address at nbcuniversal.com?
Corporate domains like nbcuniversal.com may use catch-all configurations that accept all addresses. Use BulkEmailChecker advanced verification to detect catch-all behavior and validate individual mailboxes.