Is cisco.com a valid email domain?
Mail for cisco.com is handled by 3 servers, with alln-mx-01.cisco.com tried first.
It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.
SPF is published. DMARC is set to reject.
Check an email address at cisco.com
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MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | alln-mx-01.cisco.com | 173.37.147.230, 2001:420:1201:6::ad25:93e6 |
| 20 | rcdn-mx-01.cisco.com | 72.163.7.166, 2001:420:1101:7::48a3:166 |
| 30 | aer-mx-01.cisco.com | 173.38.212.150, 2001:420:4621::ad26:d496 |
SPF
Record published
v=spf1 redirect=spfa._spf.cisco.com
DMARC
Policy: reject
v=DMARC1; p=reject; pct=100; sp=reject; fo=1; ri=3600; rua=mailto:ynldvgsr@ag.dmarcian.com; ruf=mailto:ynldvgsr@fr.dmarcian.com;
Disposable?
No, not on our disposable list.
Free provider?
No, not a known free provider.
What this means for your email list
What this means for addresses at this domain
The domain accepts mail, but whether a given person's mailbox exists depends on that organisation. Company domains often have staff who left, role mailboxes like info@ and sales@, and sometimes catch-all rules that accept everything. Verify the individual address before you send.
Sender authentication
cisco.com has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as cisco.com must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is cisco.com a valid email domain?
- Yes. cisco.com publishes 3 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is cisco.com a disposable email domain?
- No. cisco.com is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for cisco.com?
- alln-mx-01.cisco.com (priority 10); rcdn-mx-01.cisco.com (priority 20); aer-mx-01.cisco.com (priority 30).
- Does cisco.com have SPF and DMARC?
- SPF: yes. DMARC: yes, policy reject.