optum.com

Summary

Registrar

CSC Corporate Domains, Inc.

Status

clientTransferProhibited

Created on

February 2, 1996

Expires on

February 3, 2027

Name servers

epla2.corpnamesvcs.com, epla1.corpnamesvcs.com

Mail servers

mxb-0077b904.gslb.pphosted.com, mxa-0077b904.gslb.pphosted.com

DMARC

Reject

SPF

Soft

DKIM

4 keys found

Website

See the website

Spoofing protection (DMARC)

DMARC tells mail servers what to do with an e-mail that claims to come from optum.com but fails SPF and DKIM checks.

Policy

Reject

Subdomain policy

Reject

Messages covered

100%

DKIM alignment

Relaxed

SPF alignment

Relaxed

Aggregate reports

[email protected]

Failure reports

[email protected]

Record

v=DMARC1; p=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];

Authorized senders (SPF)

SPF lists the servers allowed to send e-mails for optum.com.

v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all

E-mail signing (DKIM)

DKIM keys published by optum.com under the most common selectors. Other keys may exist under selectors specific to each sending service.

RSA keys shorter than 2048 bits, called short keys, are discouraged: they are easier to break.

MX, SPF, DKIM and DMARC: the e-mail records

Four DNS records make a domain's e-mail work. MX says where e-mails sent to optum.com arrive; SPF, DKIM and DMARC let mail servers check that an e-mail claiming to come from optum.com was really sent by this domain, which protects it against spoofing.

optum.com  MX  10 mx1.optum.com.
optum.com  MX  20 mx2.optum.com.

optum.com  TXT  "v=spf1 mx include:_spf.google.com ip4:192.0.2.10 -all"

google._domainkey.optum.com  TXT  "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA…"

_dmarc.optum.com  TXT  "v=DMARC1; p=quarantine; rua=mailto:[email protected]; adkim=r; aspf=r"

DNS records of optum.com

Related IP addresses

IPv4 addresses used by optum.com: website, name servers, mail servers and senders authorized by SPF.

WHOIS of the domain optum.com

Domain Name: OPTUM.COM
   Registry Domain ID: 1240205_DOMAIN_COM-VRSN
   Registrar WHOIS Server: whois.corporatedomains.com
   Registrar URL: http://cscdbs.com
   Updated Date: 2026-08-21T07:21:31Z
   Creation Date: 1996-02-02T05:00:00Z
   Registry Expiry Date: 2027-02-03T05:00:00Z
   Registrar: CSC Corporate Domains, Inc.
   Registrar IANA ID: 299
   Registrar Abuse Contact Email: [email protected]
   Registrar Abuse Contact Phone: 8887802723
   Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
   Name Server: EDNS4.ULTRADNS.BIZ
   Name Server: EDNS4.ULTRADNS.COM
   Name Server: EDNS4.ULTRADNS.NET
   Name Server: EDNS4.ULTRADNS.ORG
   Name Server: EPLA1.CORPNAMESVCS.COM
   Name Server: EPLA2.CORPNAMESVCS.COM
   DNSSEC: signedDelegation
   DNSSEC DS Data: 61375 8 2 F80B6BFF4B7C99D5CEBB94942C58C1A1F67C398546E979083F95CB8975478D14
   URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2026-10-01T18:43:28Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

NOTICE: The expiration date displayed in this record is the date the
registrar's sponsorship of the domain name registration in the registry is
currently set to expire. This date does not necessarily reflect the expiration
date of the domain name registrant's agreement with the sponsoring
registrar.  Users may consult the sponsoring registrar's Whois database to
view the registrar's reported date of expiration for this registration.

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