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Cognizant.com

Safe to Send

Cognizant.com is operated by Cognizant Technology. The domain runs 1 mail exchange and SMTP is responsive, with all three authentication standards in force.

Safe to Send
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Verify @cognizant.com emails

Live SMTP handshake against cognizant.com mail servers. No email is sent. 10 free per day, no signup.

@cognizant.com
No email sent No signup Real-time SMTP

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
1
Mail exchangers

Mail Exchange (MX) Records for cognizant.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.

1 RECORD
#1
cognizant-com.mail.protection.outlook.com 52.101.124.117
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 OSA0EPF000000C8.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Sun, 10 May 2026 18:10:42 +0000 [08DEADA644392EFC]
Primary mail server accepted SMTP connection and returned a banner during the live audit.

cognizant.com Email Authentication SPF · DKIM · DMARC

3/3 PASS
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 exists:%{i}._i.%{d}._d.espf.agari.com include:%{d}.b6.spf-protect.agari.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. Reject
TXTv=DMARC1; p=reject; sp=none; aspf=r; fo=1; ri=3600; rua=mailto:cognizant@rua.agari.com; ruf=mailto:cognizant@ruf.agari.com
Strict policy. Receivers are instructed to reject any mail that fails SPF or DKIM. The strongest available setting.

cognizant.com Domain Registration WHOIS · Nameservers · Registrar

31 YEARS OLD
RegistrarCSC Corporate Domains, Inc.
IANA ID299
RegisteredMarch 5, 1995
Last UpdatedApril 18, 2026
ExpiresNovember 29, 2026
Age31 years
TLD.com
Authoritative Nameservers (4)
  • NS3.COGNIZANT.COM
  • NS5.COGNIZANT.COM
  • NS1.COGNIZANT.COM
  • NS4.COGNIZANT.COM
Registrant
Cognizant Technology Solutions US Corporation
NJ, UNITED STATES
About this Domain

About cognizant.com

Cognizant Technology Solutions (cognizant.com) is a multinational IT services and consulting company headquartered in Teaneck, New Jersey. Cognizant provides IT services, digital solutions, consulting, and technology modernization to enterprises across industries including healthcare, financial services, manufacturing, and retail, with over 350,000 employees worldwide.

Cognizant implements enterprise email authentication on the cognizant.com domain with SPF, DKIM, and DMARC enforcement. As one of the largest IT services companies, Cognizant maintains strong email security to protect client communications and project delivery across its global operations.

SMTP verification of cognizant.com addresses returns definitive responses for valid and invalid mailboxes. The domain does not function as catch-all. Cognizant's enterprise mail infrastructure implements rate limiting on inbound SMTP connections.

For partners communicating with Cognizant employees, proper sender authentication improves deliverability. Cognizant's corporate email filters enforce SPF, DKIM, and DMARC validation. Authentication compliance ensures reliable inbox delivery to cognizant.com addresses.

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Common Questions About cognizant.com

Is cognizant.com a disposable or temporary email provider?
No. cognizant.com is not a disposable email provider. It is classified as Corporate Email operated by Cognizant Technology and addresses on cognizant.com are persistent rather than throwaway. Mail sent to a valid cognizant.com mailbox reaches a real recipient.
How do I verify if a cognizant.com email address is valid?
The fastest way to verify a cognizant.com email address is to use our free email checker. Enter any @cognizant.com mailbox at the top of this page and our system performs a real-time SMTP handshake against cognizant.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 cognizant.com email exists without sending a message?
Yes. Our real-time email verification API connects directly to cognizant.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 cognizant.com mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for cognizant.com?
cognizant.com currently publishes 1 mail exchange (MX) record. The primary MX is cognizant-com.mail.protection.outlook.com, which is the first server contacted when other mail systems try to deliver email to a cognizant.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 cognizant.com.
Does cognizant.com use SPF, DKIM, and DMARC email authentication?
cognizant.com enforces all three email authentication standards: SPF, DKIM, and DMARC (policy: reject). This is the gold-standard configuration. It means receivers can verify that mail claiming to come from @cognizant.com is genuine, and cognizant.com's DMARC policy of 'reject' instructs receivers how to handle messages that fail those checks.
Why do emails to cognizant.com bounce or get blocked?
Bounces from cognizant.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 cognizant.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 cognizant.com's receivers trust you.
How can I verify a large list of cognizant.com email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of cognizant.com addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, cognizant.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 cognizant.com email addresses?
Yes, with normal hygiene. cognizant.com is a legitimate email service and signups from @cognizant.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 cognizant.com by default.
What email format does cognizant.com use for usernames?
Most cognizant.com mailboxes follow common patterns like first.last@cognizant.com, firstinitiallast@cognizant.com, or first@cognizant.com, but the actual local-part rules depend on Cognizant Technology. The only reliable way to confirm whether a specific @cognizant.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 cognizant.com risk score calculated?
The 0-to-100 risk score for cognizant.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 cognizant.com score is recomputed on every audit so it always reflects the live state of the domain.
Is cognizant.com a valid email domain?
Yes, cognizant.com is the official corporate email domain for Cognizant Technology. It is used for internal business communications.
Is cognizant.com a disposable or temporary email provider?
No, cognizant.com is a corporate email domain belonging to Cognizant Technology, used exclusively by employees and authorized personnel.
What mail server does cognizant.com use?
cognizant.com uses enterprise-grade mail infrastructure. Check the MX records section for specific mail server details.
Can I send marketing emails to cognizant.com addresses?
B2B marketing to cognizant.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 cognizant.com?
Corporate domains like cognizant.com may use catch-all configurations that accept all addresses. Use BulkEmailChecker advanced verification to detect catch-all behavior and validate individual mailboxes.